---
_id: '10135'
abstract:
- lang: eng
text: "Plants maintain the capacity to develop new organs e.g. lateral roots post-embryonically
throughout their whole life and thereby flexibly adapt to ever-changing environmental
conditions. Plant hormones auxin and cytokinin are the main regulators of the
lateral root organogenesis. Additionally to their solo activities, the interaction
between auxin and\r\ncytokinin plays crucial role in fine-tuning of lateral root
development and growth. In particular, cytokinin modulates auxin distribution
within the developing lateral root by affecting the endomembrane trafficking of
auxin transporter PIN1 and promoting its vacuolar degradation (Marhavý et al.,
2011, 2014). This effect is independent of transcription and\r\ntranslation. Therefore,
it suggests novel, non-canonical cytokinin activity occuring possibly on the posttranslational
level. Impact of cytokinin and other plant hormones on auxin transporters (including
PIN1) on the posttranslational level is described in detail in the introduction
part of this thesis in a form of a review (Semeradova et al., 2020). To gain insights
into the molecular machinery underlying cytokinin effect on the endomembrane trafficking
in the plant cell, in particular on the PIN1 degradation, we conducted two large
proteomic screens: 1) Identification of cytokinin binding proteins using\r\nchemical
proteomics. 2) Monitoring of proteomic and phosphoproteomic changes upon cytokinin
treatment. In the first screen, we identified DYNAMIN RELATED PROTEIN 2A (DRP2A).
We found that DRP2A plays a role in cytokinin regulated processes during the plant
growth and that cytokinin treatment promotes destabilization of DRP2A protein.
However, the role of DRP2A in the PIN1 degradation remains to be elucidated. In
the second screen, we found VACUOLAR PROTEIN SORTING 9A (VPS9A). VPS9a plays crucial
role in plant’s response to cytokin and in cytokinin mediated PIN1 degradation.
Altogether, we identified proteins, which bind to cytokinin and proteins that
in response to\r\ncytokinin exhibit significantly changed abundance or phosphorylation
pattern. By combining information from these two screens, we can pave our way
towards understanding of noncanonical cytokinin effects."
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Hana
full_name: Semerádová, Hana
id: 42FE702E-F248-11E8-B48F-1D18A9856A87
last_name: Semerádová
citation:
ama: Semerádová H. Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis. 2021. doi:10.15479/at:ista:10135
apa: Semerádová, H. (2021). Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis. Institute of Science and Technology
Austria. https://doi.org/10.15479/at:ista:10135
chicago: Semerádová, Hana. “Molecular Mechanisms of the Cytokinin-Regulated Endomembrane
Trafficking to Coordinate Plant Organogenesis.” Institute of Science and Technology
Austria, 2021. https://doi.org/10.15479/at:ista:10135.
ieee: H. Semerádová, “Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis,” Institute of Science and Technology
Austria, 2021.
ista: Semerádová H. 2021. Molecular mechanisms of the cytokinin-regulated endomembrane
trafficking to coordinate plant organogenesis. Institute of Science and Technology
Austria.
mla: Semerádová, Hana. Molecular Mechanisms of the Cytokinin-Regulated Endomembrane
Trafficking to Coordinate Plant Organogenesis. Institute of Science and Technology
Austria, 2021, doi:10.15479/at:ista:10135.
short: H. Semerádová, Molecular Mechanisms of the Cytokinin-Regulated Endomembrane
Trafficking to Coordinate Plant Organogenesis, Institute of Science and Technology
Austria, 2021.
date_created: 2021-10-13T13:42:48Z
date_published: 2021-10-13T00:00:00Z
date_updated: 2024-01-25T10:53:29Z
day: '13'
ddc:
- '570'
degree_awarded: PhD
department:
- _id: GradSch
- _id: EvBe
doi: 10.15479/at:ista:10135
file:
- access_level: closed
checksum: ce7108853e6cec6224f17cd6429b51fe
content_type: application/vnd.openxmlformats-officedocument.wordprocessingml.document
creator: cziletti
date_created: 2021-10-27T07:45:37Z
date_updated: 2022-12-20T23:30:05Z
embargo_to: open_access
file_id: '10186'
file_name: Hana_Semeradova_Disertation_Thesis_II_Revised_3.docx
file_size: 28508629
relation: source_file
- access_level: open_access
checksum: 0d7afb846e8e31ec794de47bf44e12ef
content_type: application/pdf
creator: cziletti
date_created: 2021-10-27T07:45:57Z
date_updated: 2022-12-20T23:30:05Z
embargo: 2022-10-28
file_id: '10187'
file_name: Hana_Semeradova_Disertation_Thesis_II_Revised_3PDFA.pdf
file_size: 10623525
relation: main_file
file_date_updated: 2022-12-20T23:30:05Z
has_accepted_license: '1'
language:
- iso: eng
month: '10'
oa: 1
oa_version: Published Version
project:
- _id: 261821BC-B435-11E9-9278-68D0E5697425
grant_number: '24746'
name: Molecular mechanisms of the cytokinin regulated endomembrane trafficking to
coordinate plant organogenesis.
publication_identifier:
isbn:
- 978-3-99078-014-5
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '9160'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Eva
full_name: Benková, Eva
id: 38F4F166-F248-11E8-B48F-1D18A9856A87
last_name: Benková
orcid: 0000-0002-8510-9739
title: Molecular mechanisms of the cytokinin-regulated endomembrane trafficking to
coordinate plant organogenesis
type: dissertation
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2021'
...
---
_id: '9728'
abstract:
- lang: eng
text: "Most real-world flows are multiphase, yet we know little about them compared
to their single-phase counterparts. Multiphase flows are more difficult to investigate
as their dynamics occur in large parameter space and involve complex phenomena
such as preferential concentration, turbulence modulation, non-Newtonian rheology,
etc. Over the last few decades, experiments in particle-laden flows have taken
a back seat in favour of ever-improving computational resources. However, computers
are still not powerful enough to simulate a real-world fluid with millions of
finite-size particles. Experiments are essential not only because they offer a
reliable way to investigate real-world multiphase flows but also because they
serve to validate numerical studies and steer the research in a relevant direction.
In this work, we have experimentally investigated particle-laden flows in pipes,
and in particular, examined the effect of particles on the laminar-turbulent transition
and the drag scaling in turbulent flows.\r\n\r\nFor particle-laden pipe flows,
an earlier study [Matas et al., 2003] reported how the sub-critical (i.e., hysteretic)
transition that occurs via localised turbulent structures called puffs is affected
by the addition of particles. In this study, in addition to this known transition,
we found a super-critical transition to a globally fluctuating state with increasing
particle concentration. At the same time, the Newtonian-type transition via puffs
is delayed to larger Reynolds numbers. At an even higher concentration, only the
globally fluctuating state is found. The dynamics of particle-laden flows are
hence determined by two competing instabilities that give rise to three flow regimes:
Newtonian-type turbulence at low, a particle-induced globally fluctuating state
at high, and a coexistence state at intermediate concentrations.\r\n\r\nThe effect
of particles on turbulent drag is ambiguous, with studies reporting drag reduction,
no net change, and even drag increase. The ambiguity arises because, in addition
to particle concentration, particle shape, size, and density also affect the net
drag. Even similar particles might affect the flow dissimilarly in different Reynolds
number and concentration ranges. In the present study, we explored a wide range
of both Reynolds number and concentration, using spherical as well as cylindrical
particles. We found that the spherical particles do not reduce drag while the
cylindrical particles are drag-reducing within a specific Reynolds number interval.
The interval strongly depends on the particle concentration and the relative size
of the pipe and particles. Within this interval, the magnitude of drag reduction
reaches a maximum. These drag reduction maxima appear to fall onto a distinct
power-law curve irrespective of the pipe diameter and particle concentration,
and this curve can be considered as the maximum drag reduction asymptote for a
given fibre shape. Such an asymptote is well known for polymeric flows but had
not been identified for particle-laden flows prior to this work."
acknowledged_ssus:
- _id: M-Shop
alternative_title:
- ISTA Thesis
article_processing_charge: No
author:
- first_name: Nishchal
full_name: Agrawal, Nishchal
id: 469E6004-F248-11E8-B48F-1D18A9856A87
last_name: Agrawal
citation:
ama: Agrawal N. Transition to turbulence and drag reduction in particle-laden pipe
flows. 2021. doi:10.15479/at:ista:9728
apa: Agrawal, N. (2021). Transition to turbulence and drag reduction in particle-laden
pipe flows. Institute of Science and Technology Austria. https://doi.org/10.15479/at:ista:9728
chicago: Agrawal, Nishchal. “Transition to Turbulence and Drag Reduction in Particle-Laden
Pipe Flows.” Institute of Science and Technology Austria, 2021. https://doi.org/10.15479/at:ista:9728.
ieee: N. Agrawal, “Transition to turbulence and drag reduction in particle-laden
pipe flows,” Institute of Science and Technology Austria, 2021.
ista: Agrawal N. 2021. Transition to turbulence and drag reduction in particle-laden
pipe flows. Institute of Science and Technology Austria.
mla: Agrawal, Nishchal. Transition to Turbulence and Drag Reduction in Particle-Laden
Pipe Flows. Institute of Science and Technology Austria, 2021, doi:10.15479/at:ista:9728.
short: N. Agrawal, Transition to Turbulence and Drag Reduction in Particle-Laden
Pipe Flows, Institute of Science and Technology Austria, 2021.
date_created: 2021-07-27T13:40:30Z
date_published: 2021-07-29T00:00:00Z
date_updated: 2024-02-28T13:14:39Z
day: '29'
ddc:
- '532'
degree_awarded: PhD
department:
- _id: GradSch
- _id: BjHo
doi: 10.15479/at:ista:9728
file:
- access_level: closed
checksum: 77436be3563a90435024307b1b5ee7e8
content_type: application/x-zip-compressed
creator: nagrawal
date_created: 2021-07-28T13:32:02Z
date_updated: 2022-07-29T22:30:05Z
embargo_to: open_access
file_id: '9744'
file_name: Transition to Turbulence and Drag Reduction in Particle-Laden Pipe Flows.zip
file_size: 22859658
relation: source_file
- access_level: open_access
checksum: 72a891d7daba85445c29b868c22575ed
content_type: application/pdf
creator: nagrawal
date_created: 2021-07-28T13:32:05Z
date_updated: 2022-07-29T22:30:05Z
embargo: 2022-07-28
file_id: '9745'
file_name: Transition to Turbulence and Drag Reduction in Particle-Laden Pipe Flows.pdf
file_size: 18658048
relation: main_file
file_date_updated: 2022-07-29T22:30:05Z
has_accepted_license: '1'
keyword:
- Drag Reduction
- Transition to Turbulence
- Multiphase Flows
- particle Laden Flows
- Complex Flows
- Experiments
- Fluid Dynamics
language:
- iso: eng
month: '07'
oa: 1
oa_version: Published Version
page: '118'
publication_identifier:
issn:
- 2663-337X
publication_status: published
publisher: Institute of Science and Technology Austria
related_material:
record:
- id: '6189'
relation: part_of_dissertation
status: public
status: public
supervisor:
- first_name: Björn
full_name: Hof, Björn
id: 3A374330-F248-11E8-B48F-1D18A9856A87
last_name: Hof
orcid: 0000-0003-2057-2754
title: Transition to turbulence and drag reduction in particle-laden pipe flows
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: dissertation
user_id: c635000d-4b10-11ee-a964-aac5a93f6ac1
year: '2021'
...
---
_id: '10336'
abstract:
- lang: eng
text: Biological membranes can dramatically accelerate the aggregation of normally
soluble protein molecules into amyloid fibrils and alter the fibril morphologies,
yet the molecular mechanisms through which this accelerated nucleation takes place
are not yet understood. Here, we develop a coarse-grained model to systematically
explore the effect that the structural properties of the lipid membrane and the
nature of protein–membrane interactions have on the nucleation rates of amyloid
fibrils. We identify two physically distinct nucleation pathways—protein-rich
and lipid-rich—and quantify how the membrane fluidity and protein–membrane affinity
control the relative importance of those molecular pathways. We find that the
membrane’s susceptibility to reshaping and being incorporated into the fibrillar
aggregates is a key determinant of its ability to promote protein aggregation.
We then characterize the rates and the free-energy profile associated with this
heterogeneous nucleation process, in which the surface itself participates in
the aggregate structure. Finally, we compare quantitatively our data to experiments
on membrane-catalyzed amyloid aggregation of α-synuclein, a protein implicated
in Parkinson’s disease that predominately nucleates on membranes. More generally,
our results provide a framework for understanding macromolecular aggregation on
lipid membranes in a broad biological and biotechnological context.
acknowledgement: We thank T. C. T. Michaels for reading the manuscript. This work
was supported by the Academy of Medical Science (J.K. and A.Š.), the Cambridge Center
for Misfolding Diseases (T.P.J.K.), the Biotechnology and Biological Sciences Research
Council (T.P.J.K.), the Frances and Augustus Newman Foundation (T.P.J.K.), the European
Research Council Grant PhysProt Agreement 337969, the Wellcome Trust (A.Š. and T.P.J.K.),
the Royal Society (A.Š.), the Medical Research Council (J.K. and A.Š.), and the
UK Materials and Molecular Modeling Hub for computational resources, which is partially
funded by Engineering and Physical Sciences Research Council Grant EP/P020194/1.
article_processing_charge: No
article_type: original
author:
- first_name: Johannes
full_name: Krausser, Johannes
last_name: Krausser
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Krausser J, Knowles TPJ, Šarić A. Physical mechanisms of amyloid nucleation
on fluid membranes. Proceedings of the National Academy of Sciences. 2020;117(52):33090-33098.
doi:10.1073/pnas.2007694117
apa: Krausser, J., Knowles, T. P. J., & Šarić, A. (2020). Physical mechanisms
of amyloid nucleation on fluid membranes. Proceedings of the National Academy
of Sciences. National Academy of Sciences. https://doi.org/10.1073/pnas.2007694117
chicago: Krausser, Johannes, Tuomas P. J. Knowles, and Anđela Šarić. “Physical Mechanisms
of Amyloid Nucleation on Fluid Membranes.” Proceedings of the National Academy
of Sciences. National Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2007694117.
ieee: J. Krausser, T. P. J. Knowles, and A. Šarić, “Physical mechanisms of amyloid
nucleation on fluid membranes,” Proceedings of the National Academy of Sciences,
vol. 117, no. 52. National Academy of Sciences, pp. 33090–33098, 2020.
ista: Krausser J, Knowles TPJ, Šarić A. 2020. Physical mechanisms of amyloid nucleation
on fluid membranes. Proceedings of the National Academy of Sciences. 117(52),
33090–33098.
mla: Krausser, Johannes, et al. “Physical Mechanisms of Amyloid Nucleation on Fluid
Membranes.” Proceedings of the National Academy of Sciences, vol. 117,
no. 52, National Academy of Sciences, 2020, pp. 33090–98, doi:10.1073/pnas.2007694117.
short: J. Krausser, T.P.J. Knowles, A. Šarić, Proceedings of the National Academy
of Sciences 117 (2020) 33090–33098.
date_created: 2021-11-25T15:07:09Z
date_published: 2020-12-16T00:00:00Z
date_updated: 2021-11-25T15:35:58Z
day: '16'
doi: 10.1073/pnas.2007694117
extern: '1'
external_id:
pmid:
- '33328273'
intvolume: ' 117'
issue: '52'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2019.12.22.886267v2
month: '12'
oa: 1
oa_version: Published Version
page: 33090-33098
pmid: 1
publication: Proceedings of the National Academy of Sciences
publication_identifier:
eissn:
- 1091-6490
issn:
- 0027-8424
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Physical mechanisms of amyloid nucleation on fluid membranes
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 117
year: '2020'
...
---
_id: '10342'
abstract:
- lang: eng
text: The blood-brain barrier is made of polarized brain endothelial cells (BECs)
phenotypically conditioned by the central nervous system (CNS). Although transport
across BECs is of paramount importance for nutrient uptake as well as ridding
the brain of waste products, the intracellular sorting mechanisms that regulate
successful receptor-mediated transcytosis in BECs remain to be elucidated. Here,
we used a synthetic multivalent system with tunable avidity to the low-density
lipoprotein receptor–related protein 1 (LRP1) to investigate the mechanisms of
transport across BECs. We used a combination of conventional and super-resolution
microscopy, both in vivo and in vitro, accompanied with biophysical modeling of
transport kinetics and membrane-bound interactions to elucidate the role of membrane-sculpting
protein syndapin-2 on fast transport via tubule formation. We show that high-avidity
cargo biases the LRP1 toward internalization associated with fast degradation,
while mid-avidity augments the formation of syndapin-2 tubular carriers promoting
a fast shuttling across.
acknowledgement: 'Funding: G.B. thanks the ERC for the starting grant (MEViC 278793)
and consolidator award (CheSSTaG 769798), EPSRC/BTG Healthcare Partnership (EP/I001697/1),
EPSRC Established Career Fellowship (EP/N026322/1), EPSRC/SomaNautix Healthcare
Partnership EP/R024723/1, and Children with Cancer UK for the research project (16-227).
X.T. and G.B. thank that Anhui 100 Talent program for facilitating data sharing
and research visits. A.D.-C. and L.R. acknowledge the Royal Society for a Newton
fellowship and the Marie Skłodowska-Curie Actions for a European Fellowship. Author
contributions: X.T. prepared and characterized POs, performed all the fast imaging
in both conventional and STED microscopy, set up the initial BBB model, encapsulated
the PtA2 in POs, and supervised the PtA2-PO animal work. D.M.L. prepared and characterized
POs; performed all the permeability studies, PLA assays, WB and associated data
analysis, and part of the colocalization assays; and performed experiments with
the shRNA for knockdown of syndapin-2. E.S. prepared and characterized POs and performed
part of colocalization assays and Cy7-labeled PO animal experiments. S.N. prepared
and characterized POs and performed part of the colocalization and inhibition assays.
G.F. designed, performed, and analyzed the agent-based simulations of transcytosis.
J.F. designed the image-based algorithm to analyze the PLA data. D.M. prepared and
characterized POs and helped with Cy7-labeled PO animal experiments. A.A. performed
TEM imaging of the POs. A.P. and A.D.-C. synthesized the dye- and peptide-functionalized
and pristine copolymers. M.V., L.H.-K., and A.Š. designed, performed, and analyzed
the MD simulations. Z.Z. supervised and supported STED imaging. P.X., B.F., and
Y.T. synthesized and characterized the PtA2 compound. L.L. performed some of the
animal work. L.R. supported and helped with the BBB characterization. G.B. analyzed
all fast imaging and supervised and coordinated the overall work. X.T., D.M.L.,
E.S., and G.B. wrote the manuscript. Competing interests: The authors declare that
part of the work is associated with the UCL spin-out company SomaNautix Ltd. Data
and materials availability: All data needed to evaluate the conclusions in the paper
are present in the paper and/or the Supplementary Materials. Additional data related
to this paper may be requested from the authors.'
article_number: 'eabc4397 '
article_processing_charge: No
article_type: original
author:
- first_name: Xiaohe
full_name: Tian, Xiaohe
last_name: Tian
- first_name: Diana M.
full_name: Leite, Diana M.
last_name: Leite
- first_name: Edoardo
full_name: Scarpa, Edoardo
last_name: Scarpa
- first_name: Sophie
full_name: Nyberg, Sophie
last_name: Nyberg
- first_name: Gavin
full_name: Fullstone, Gavin
last_name: Fullstone
- first_name: Joe
full_name: Forth, Joe
last_name: Forth
- first_name: Diana
full_name: Matias, Diana
last_name: Matias
- first_name: Azzurra
full_name: Apriceno, Azzurra
last_name: Apriceno
- first_name: Alessandro
full_name: Poma, Alessandro
last_name: Poma
- first_name: Aroa
full_name: Duro-Castano, Aroa
last_name: Duro-Castano
- first_name: Manish
full_name: Vuyyuru, Manish
last_name: Vuyyuru
- first_name: Lena
full_name: Harker-Kirschneck, Lena
last_name: Harker-Kirschneck
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Zhongping
full_name: Zhang, Zhongping
last_name: Zhang
- first_name: Pan
full_name: Xiang, Pan
last_name: Xiang
- first_name: Bin
full_name: Fang, Bin
last_name: Fang
- first_name: Yupeng
full_name: Tian, Yupeng
last_name: Tian
- first_name: Lei
full_name: Luo, Lei
last_name: Luo
- first_name: Loris
full_name: Rizzello, Loris
last_name: Rizzello
- first_name: Giuseppe
full_name: Battaglia, Giuseppe
last_name: Battaglia
citation:
ama: 'Tian X, Leite DM, Scarpa E, et al. On the shuttling across the blood-brain
barrier via tubule formation: Mechanism and cargo avidity bias. Science Advances.
2020;6(48). doi:10.1126/sciadv.abc4397'
apa: 'Tian, X., Leite, D. M., Scarpa, E., Nyberg, S., Fullstone, G., Forth, J.,
… Battaglia, G. (2020). On the shuttling across the blood-brain barrier via tubule
formation: Mechanism and cargo avidity bias. Science Advances. American
Association for the Advancement of Science. https://doi.org/10.1126/sciadv.abc4397'
chicago: 'Tian, Xiaohe, Diana M. Leite, Edoardo Scarpa, Sophie Nyberg, Gavin Fullstone,
Joe Forth, Diana Matias, et al. “On the Shuttling across the Blood-Brain Barrier
via Tubule Formation: Mechanism and Cargo Avidity Bias.” Science Advances.
American Association for the Advancement of Science, 2020. https://doi.org/10.1126/sciadv.abc4397.'
ieee: 'X. Tian et al., “On the shuttling across the blood-brain barrier via
tubule formation: Mechanism and cargo avidity bias,” Science Advances,
vol. 6, no. 48. American Association for the Advancement of Science, 2020.'
ista: 'Tian X, Leite DM, Scarpa E, Nyberg S, Fullstone G, Forth J, Matias D, Apriceno
A, Poma A, Duro-Castano A, Vuyyuru M, Harker-Kirschneck L, Šarić A, Zhang Z, Xiang
P, Fang B, Tian Y, Luo L, Rizzello L, Battaglia G. 2020. On the shuttling across
the blood-brain barrier via tubule formation: Mechanism and cargo avidity bias.
Science Advances. 6(48), eabc4397.'
mla: 'Tian, Xiaohe, et al. “On the Shuttling across the Blood-Brain Barrier via
Tubule Formation: Mechanism and Cargo Avidity Bias.” Science Advances,
vol. 6, no. 48, eabc4397, American Association for the Advancement of Science,
2020, doi:10.1126/sciadv.abc4397.'
short: X. Tian, D.M. Leite, E. Scarpa, S. Nyberg, G. Fullstone, J. Forth, D. Matias,
A. Apriceno, A. Poma, A. Duro-Castano, M. Vuyyuru, L. Harker-Kirschneck, A. Šarić,
Z. Zhang, P. Xiang, B. Fang, Y. Tian, L. Luo, L. Rizzello, G. Battaglia, Science
Advances 6 (2020).
date_created: 2021-11-26T06:40:28Z
date_published: 2020-11-27T00:00:00Z
date_updated: 2021-11-26T07:00:24Z
day: '27'
ddc:
- '611'
doi: 10.1126/sciadv.abc4397
extern: '1'
external_id:
pmid:
- '33246953'
file:
- access_level: open_access
checksum: 3ba2eca975930cdb0b1ce1ae876885a7
content_type: application/pdf
creator: cchlebak
date_created: 2021-11-26T06:50:09Z
date_updated: 2021-11-26T06:50:09Z
file_id: '10343'
file_name: 2020_SciAdv_Tian.pdf
file_size: 10381298
relation: main_file
success: 1
file_date_updated: 2021-11-26T06:50:09Z
has_accepted_license: '1'
intvolume: ' 6'
issue: '48'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.04.04.025866v1
month: '11'
oa: 1
oa_version: Published Version
pmid: 1
publication: Science Advances
publication_identifier:
issn:
- 2375-2548
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'On the shuttling across the blood-brain barrier via tubule formation: Mechanism
and cargo avidity bias'
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 6
year: '2020'
...
---
_id: '10344'
abstract:
- lang: eng
text: In this study, we investigate the role of the surface patterning of nanostructures
for cell membrane reshaping. To accomplish this, we combine an evolutionary algorithm
with coarse-grained molecular dynamics simulations and explore the solution space
of ligand patterns on a nanoparticle that promote efficient and reliable cell
uptake. Surprisingly, we find that in the regime of low ligand number the best-performing
structures are characterized by ligands arranged into long one-dimensional chains
that pattern the surface of the particle. We show that these chains of ligands
provide particles with high rotational freedom and they lower the free energy
barrier for membrane crossing. Our approach reveals a set of nonintuitive design
rules that can be used to inform artificial nanoparticle construction and the
search for inhibitors of viral entry.
acknowledgement: We acknowledge support from EPSRC (J. C. F.), MRC (B. B. and A. Š.),
the ERC StG 802960 “NEPA” (J. K. and A. Š.), the Royal Society (A. Š.), and the
United Kingdom Materials and Molecular Modelling Hub for computational resources,
which is partially funded by EPSRC (EP/P020194/1).
article_number: '228101'
article_processing_charge: No
article_type: original
author:
- first_name: Joel C.
full_name: Forster, Joel C.
last_name: Forster
- first_name: Johannes
full_name: Krausser, Johannes
last_name: Krausser
- first_name: Manish R.
full_name: Vuyyuru, Manish R.
last_name: Vuyyuru
- first_name: Buzz
full_name: Baum, Buzz
last_name: Baum
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Forster JC, Krausser J, Vuyyuru MR, Baum B, Šarić A. Exploring the design rules
for efficient membrane-reshaping nanostructures. Physical Review Letters.
2020;125(22). doi:10.1103/physrevlett.125.228101
apa: Forster, J. C., Krausser, J., Vuyyuru, M. R., Baum, B., & Šarić, A. (2020).
Exploring the design rules for efficient membrane-reshaping nanostructures. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.125.228101
chicago: Forster, Joel C., Johannes Krausser, Manish R. Vuyyuru, Buzz Baum, and
Anđela Šarić. “Exploring the Design Rules for Efficient Membrane-Reshaping Nanostructures.”
Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/physrevlett.125.228101.
ieee: J. C. Forster, J. Krausser, M. R. Vuyyuru, B. Baum, and A. Šarić, “Exploring
the design rules for efficient membrane-reshaping nanostructures,” Physical
Review Letters, vol. 125, no. 22. American Physical Society, 2020.
ista: Forster JC, Krausser J, Vuyyuru MR, Baum B, Šarić A. 2020. Exploring the design
rules for efficient membrane-reshaping nanostructures. Physical Review Letters.
125(22), 228101.
mla: Forster, Joel C., et al. “Exploring the Design Rules for Efficient Membrane-Reshaping
Nanostructures.” Physical Review Letters, vol. 125, no. 22, 228101, American
Physical Society, 2020, doi:10.1103/physrevlett.125.228101.
short: J.C. Forster, J. Krausser, M.R. Vuyyuru, B. Baum, A. Šarić, Physical Review
Letters 125 (2020).
date_created: 2021-11-26T07:10:43Z
date_published: 2020-11-23T00:00:00Z
date_updated: 2021-11-30T08:33:14Z
day: '23'
ddc:
- '530'
doi: 10.1103/physrevlett.125.228101
extern: '1'
external_id:
pmid:
- '33315453'
file:
- access_level: open_access
checksum: fbf2e1415e332d6add90222d60401a1d
content_type: application/pdf
creator: cchlebak
date_created: 2021-11-26T07:16:49Z
date_updated: 2021-11-26T07:16:49Z
file_id: '10345'
file_name: 2020_PhysRevLett_Forster.pdf
file_size: 844353
relation: main_file
success: 1
file_date_updated: 2021-11-26T07:16:49Z
has_accepted_license: '1'
intvolume: ' 125'
issue: '22'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.02.27.968149v1
month: '11'
oa: 1
oa_version: Published Version
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Exploring the design rules for efficient membrane-reshaping nanostructures
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 125
year: '2020'
...
---
_id: '10341'
abstract:
- lang: eng
text: Tracing the motion of macromolecules, viruses, and nanoparticles adsorbed
onto cell membranes is currently the most direct way of probing the complex dynamic
interactions behind vital biological processes, including cell signalling, trafficking,
and viral infection. The resulting trajectories are usually consistent with some
type of anomalous diffusion, but the molecular origins behind the observed anomalous
behaviour are usually not obvious. Here we use coarse-grained molecular dynamics
simulations to help identify the physical mechanisms that can give rise to experimentally
observed trajectories of nanoscopic objects moving on biological membranes. We
find that diffusion on membranes of high fluidities typically results in normal
diffusion of the adsorbed nanoparticle, irrespective of the concentration of receptors,
receptor clustering, or multivalent interactions between the particle and membrane
receptors. Gel-like membranes on the other hand result in anomalous diffusion
of the particle, which becomes more pronounced at higher receptor concentrations.
This anomalous diffusion is characterised by local particle trapping in the regions
of high receptor concentrations and fast hopping between such regions. The normal
diffusion is recovered in the limit where the gel membrane is saturated with receptors.
We conclude that hindered receptor diffusivity can be a common reason behind the
observed anomalous diffusion of viruses, vesicles, and nanoparticles adsorbed
on cell and model membranes. Our results enable direct comparison with experiments
and offer a new route for interpreting motility experiments on cell membranes.
acknowledgement: We thank Jessica McQuade for her input at the start of the project.
We acknowledge support from the ERASMUS Placement Programme (V. E. D.), the UCL
Institute for the Physics of Living Systems (V. E. D. and A. Š.), the UCL Global
Engagement Fund (L. M. C. J.), and the Royal Society (A. Š.).
article_processing_charge: No
article_type: original
author:
- first_name: V. E.
full_name: Debets, V. E.
last_name: Debets
- first_name: L. M. C.
full_name: Janssen, L. M. C.
last_name: Janssen
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Debets VE, Janssen LMC, Šarić A. Characterising the diffusion of biological
nanoparticles on fluid and cross-linked membranes. Soft Matter. 2020;16(47):10628-10639.
doi:10.1039/d0sm00712a
apa: Debets, V. E., Janssen, L. M. C., & Šarić, A. (2020). Characterising the
diffusion of biological nanoparticles on fluid and cross-linked membranes. Soft
Matter. Royal Society of Chemistry. https://doi.org/10.1039/d0sm00712a
chicago: Debets, V. E., L. M. C. Janssen, and Anđela Šarić. “Characterising the
Diffusion of Biological Nanoparticles on Fluid and Cross-Linked Membranes.” Soft
Matter. Royal Society of Chemistry, 2020. https://doi.org/10.1039/d0sm00712a.
ieee: V. E. Debets, L. M. C. Janssen, and A. Šarić, “Characterising the diffusion
of biological nanoparticles on fluid and cross-linked membranes,” Soft Matter,
vol. 16, no. 47. Royal Society of Chemistry, pp. 10628–10639, 2020.
ista: Debets VE, Janssen LMC, Šarić A. 2020. Characterising the diffusion of biological
nanoparticles on fluid and cross-linked membranes. Soft Matter. 16(47), 10628–10639.
mla: Debets, V. E., et al. “Characterising the Diffusion of Biological Nanoparticles
on Fluid and Cross-Linked Membranes.” Soft Matter, vol. 16, no. 47, Royal
Society of Chemistry, 2020, pp. 10628–39, doi:10.1039/d0sm00712a.
short: V.E. Debets, L.M.C. Janssen, A. Šarić, Soft Matter 16 (2020) 10628–10639.
date_created: 2021-11-26T06:29:41Z
date_published: 2020-10-06T00:00:00Z
date_updated: 2021-11-26T07:00:33Z
day: '06'
doi: 10.1039/d0sm00712a
extern: '1'
external_id:
pmid:
- '33084724'
intvolume: ' 16'
issue: '47'
keyword:
- condensed matter physics
- general chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.05.01.071761v1
month: '10'
oa: 1
oa_version: Published Version
page: 10628-10639
pmid: 1
publication: Soft Matter
publication_identifier:
issn:
- 1744-683X
- 1744-6848
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Characterising the diffusion of biological nanoparticles on fluid and cross-linked
membranes
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 16
year: '2020'
...
---
_id: '10346'
abstract:
- lang: eng
text: One of the most robust examples of self-assembly in living organisms is the
formation of collagen architectures. Collagen type I molecules are a crucial component
of the extracellular matrix, where they self-assemble into fibrils of well-defined
axial striped patterns. This striped fibrillar pattern is preserved across the
animal kingdom and is important for the determination of cell phenotype, cell
adhesion, and tissue regulation and signaling. The understanding of the physical
processes that determine such a robust morphology of self-assembled collagen fibrils
is currently almost completely missing. Here, we develop a minimal coarse-grained
computational model to identify the physical principles of the assembly of collagen-mimetic
molecules. We find that screened electrostatic interactions can drive the formation
of collagen-like filaments of well-defined striped morphologies. The fibril axial
pattern is determined solely by the distribution of charges on the molecule and
is robust to the changes in protein concentration, monomer rigidity, and environmental
conditions. We show that the striped fibrillar pattern cannot be easily predicted
from the interactions between two monomers but is an emergent result of multibody
interactions. Our results can help address collagen remodeling in diseases and
aging and guide the design of collagen scaffolds for biotechnological applications.
acknowledgement: We thank Melinda Duer, Patrick Mesquida, Lucy Colwell, Lucie Liu,
Daan Frenkel, and Ivan Palaia for helpful discussions. We acknowledge support from
the Engineering and Physical Sciences Research Council (A.E.H., L.K.D., and A.Š.),
Biotechnology and Biological Sciences Research Council LIDo programme (N.G.G. and
C.A.B.), the Royal Society (A.Š.), and the UK Materials and Molecular Modelling
Hub for computational resources, which is partially funded by EPSRC ( EP/P020194/1).
article_processing_charge: No
article_type: original
author:
- first_name: Anne E.
full_name: Hafner, Anne E.
last_name: Hafner
- first_name: Noemi G.
full_name: Gyori, Noemi G.
last_name: Gyori
- first_name: Ciaran A.
full_name: Bench, Ciaran A.
last_name: Bench
- first_name: Luke K.
full_name: Davis, Luke K.
last_name: Davis
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Hafner AE, Gyori NG, Bench CA, Davis LK, Šarić A. Modeling fibrillogenesis
of collagen-mimetic molecules. Biophysical Journal. 2020;119(9):1791-1799.
doi:10.1016/j.bpj.2020.09.013
apa: Hafner, A. E., Gyori, N. G., Bench, C. A., Davis, L. K., & Šarić, A. (2020).
Modeling fibrillogenesis of collagen-mimetic molecules. Biophysical Journal.
Cell Press. https://doi.org/10.1016/j.bpj.2020.09.013
chicago: Hafner, Anne E., Noemi G. Gyori, Ciaran A. Bench, Luke K. Davis, and Anđela
Šarić. “Modeling Fibrillogenesis of Collagen-Mimetic Molecules.” Biophysical
Journal. Cell Press, 2020. https://doi.org/10.1016/j.bpj.2020.09.013.
ieee: A. E. Hafner, N. G. Gyori, C. A. Bench, L. K. Davis, and A. Šarić, “Modeling
fibrillogenesis of collagen-mimetic molecules,” Biophysical Journal, vol.
119, no. 9. Cell Press, pp. 1791–1799, 2020.
ista: Hafner AE, Gyori NG, Bench CA, Davis LK, Šarić A. 2020. Modeling fibrillogenesis
of collagen-mimetic molecules. Biophysical Journal. 119(9), 1791–1799.
mla: Hafner, Anne E., et al. “Modeling Fibrillogenesis of Collagen-Mimetic Molecules.”
Biophysical Journal, vol. 119, no. 9, Cell Press, 2020, pp. 1791–99, doi:10.1016/j.bpj.2020.09.013.
short: A.E. Hafner, N.G. Gyori, C.A. Bench, L.K. Davis, A. Šarić, Biophysical Journal
119 (2020) 1791–1799.
date_created: 2021-11-26T07:27:24Z
date_published: 2020-09-23T00:00:00Z
date_updated: 2021-11-26T07:45:24Z
day: '23'
doi: 10.1016/j.bpj.2020.09.013
extern: '1'
external_id:
pmid:
- '33049216'
intvolume: ' 119'
issue: '9'
keyword:
- biophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.06.08.140061v1
month: '09'
oa: 1
oa_version: Published Version
page: 1791-1799
pmid: 1
publication: Biophysical Journal
publication_identifier:
issn:
- 0006-3495
publication_status: published
publisher: Cell Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Modeling fibrillogenesis of collagen-mimetic molecules
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 119
year: '2020'
...
---
_id: '10350'
abstract:
- lang: eng
text: The misfolding and aberrant aggregation of proteins into fibrillar structures
is a key factor in some of the most prevalent human diseases, including diabetes
and dementia. Low molecular weight oligomers are thought to be a central factor
in the pathology of these diseases, as well as critical intermediates in the fibril
formation process, and as such have received much recent attention. Moreover,
on-pathway oligomeric intermediates are potential targets for therapeutic strategies
aimed at interrupting the fibril formation process. However, a consistent framework
for distinguishing on-pathway from off-pathway oligomers has hitherto been lacking
and, in particular, no consensus definition of on- and off-pathway oligomers is
available. In this paper, we argue that a non-binary definition of oligomers'
contribution to fibril-forming pathways may be more informative and we suggest
a quantitative framework, in which each oligomeric species is assigned a value
between 0 and 1 describing its relative contribution to the formation of fibrils.
First, we clarify the distinction between oligomers and fibrils, and then we use
the formalism of reaction networks to develop a general definition for on-pathway
oligomers, that yields meaningful classifications in the context of amyloid formation.
By applying these concepts to Monte Carlo simulations of a minimal aggregating
system, and by revisiting several previous studies of amyloid oligomers in light
of our new framework, we demonstrate how to perform these classifications in practice.
For each oligomeric species we obtain the degree to which it is on-pathway, highlighting
the most effective pharmaceutical targets for the inhibition of amyloid fibril
formation.
acknowledgement: We are grateful to the Schiff Foundation (AJD), Peterhouse, Cambridge
(TCTM), the Swiss National Science foundation (TCTM), Ramon Jenkins Fellowship,
Sidney Sussex, Cambridge (GM), the Royal Society (AŠ), the Academy of Medical Sciences
and Wellcome Trust (AŠ), the Danish Research Council (MK), the Lundbeck Foundation
(MK), the Swedish Research Council (SL), the Wellcome Trust (TPJK), the Cambridge
Centre for Misfolding Diseases (TPJK), the BBSRC (TPJK), the Frances and Augustus
Newman Foundation (TPJK) for financial support. The research leading to these results
has received funding from the European Research Council under the European Union's
Seventh Framework Programme (FP7/2007-2013) through the ERC grants PhysProt (agreement
no. 337969), MAMBA (agreement no. 340890) and NovoNordiskFonden (SL).
article_processing_charge: No
article_type: original
author:
- first_name: Alexander J.
full_name: Dear, Alexander J.
last_name: Dear
- first_name: Georg
full_name: Meisl, Georg
last_name: Meisl
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Thomas C. T.
full_name: Michaels, Thomas C. T.
last_name: Michaels
- first_name: Magnus
full_name: Kjaergaard, Magnus
last_name: Kjaergaard
- first_name: Sara
full_name: Linse, Sara
last_name: Linse
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
citation:
ama: Dear AJ, Meisl G, Šarić A, et al. Identification of on- and off-pathway oligomers
in amyloid fibril formation. Chemical Science. 2020;11(24):6236-6247. doi:10.1039/c9sc06501f
apa: Dear, A. J., Meisl, G., Šarić, A., Michaels, T. C. T., Kjaergaard, M., Linse,
S., & Knowles, T. P. J. (2020). Identification of on- and off-pathway oligomers
in amyloid fibril formation. Chemical Science. Royal Society of Chemistry.
https://doi.org/10.1039/c9sc06501f
chicago: Dear, Alexander J., Georg Meisl, Anđela Šarić, Thomas C. T. Michaels, Magnus
Kjaergaard, Sara Linse, and Tuomas P. J. Knowles. “Identification of On- and off-Pathway
Oligomers in Amyloid Fibril Formation.” Chemical Science. Royal Society
of Chemistry, 2020. https://doi.org/10.1039/c9sc06501f.
ieee: A. J. Dear et al., “Identification of on- and off-pathway oligomers
in amyloid fibril formation,” Chemical Science, vol. 11, no. 24. Royal
Society of Chemistry, pp. 6236–6247, 2020.
ista: Dear AJ, Meisl G, Šarić A, Michaels TCT, Kjaergaard M, Linse S, Knowles TPJ.
2020. Identification of on- and off-pathway oligomers in amyloid fibril formation.
Chemical Science. 11(24), 6236–6247.
mla: Dear, Alexander J., et al. “Identification of On- and off-Pathway Oligomers
in Amyloid Fibril Formation.” Chemical Science, vol. 11, no. 24, Royal
Society of Chemistry, 2020, pp. 6236–47, doi:10.1039/c9sc06501f.
short: A.J. Dear, G. Meisl, A. Šarić, T.C.T. Michaels, M. Kjaergaard, S. Linse,
T.P.J. Knowles, Chemical Science 11 (2020) 6236–6247.
date_created: 2021-11-26T09:08:19Z
date_published: 2020-06-08T00:00:00Z
date_updated: 2021-11-26T11:21:20Z
day: '08'
doi: 10.1039/c9sc06501f
extern: '1'
external_id:
pmid:
- '32953019'
intvolume: ' 11'
issue: '24'
keyword:
- general chemistry
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc/3.0/
main_file_link:
- open_access: '1'
url: https://pubs.rsc.org/en/content/articlehtml/2020/sc/c9sc06501f
month: '06'
oa: 1
oa_version: Published Version
page: 6236-6247
pmid: 1
publication: Chemical Science
publication_identifier:
eissn:
- 2041-6539
issn:
- 2041-6520
publication_status: published
publisher: Royal Society of Chemistry
quality_controlled: '1'
scopus_import: '1'
status: public
title: Identification of on- and off-pathway oligomers in amyloid fibril formation
tmp:
image: /images/cc_by_nc.png
legal_code_url: https://creativecommons.org/licenses/by-nc/3.0/legalcode
name: Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)
short: CC BY-NC (3.0)
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 11
year: '2020'
...
---
_id: '10349'
abstract:
- lang: eng
text: Sulfolobus acidocaldarius is the closest experimentally tractable archaeal
relative of eukaryotes and, despite lacking obvious cyclin-dependent kinase and
cyclin homologs, has an ordered eukaryote-like cell cycle with distinct phases
of DNA replication and division. Here, in exploring the mechanism of cell division
in S. acidocaldarius, we identify a role for the archaeal proteasome in regulating
the transition from the end of one cell cycle to the beginning of the next. Further,
we identify the archaeal ESCRT-III homolog, CdvB, as a key target of the proteasome
and show that its degradation triggers division by allowing constriction of the
CdvB1:CdvB2 ESCRT-III division ring. These findings offer a minimal mechanism
for ESCRT-III–mediated membrane remodeling and point to a conserved role for the
proteasome in eukaryotic and archaeal cell cycle control.
acknowledgement: "We thank the MRC LMCB at UCL for their support; the flow cytometry
STP at the Francis Crick Institute for assistance, with special thanks to S. Purewal
and D. Davis; C. Bertoli for mentorship\r\nand advice; J. M. Garcia-Arcos for help
early on in this project; the entire Baum lab for their input throughout the project;
the Albers lab for advice and reagents, with special thanks to M. Van Wolferen and
S. Albers; the members of the Wellcome consortium for archaeal cytoskeleton studies
for advice and comments; and J. Löwe, S. Oliferenko, M. Balasubramanian, and D.
Gerlich for discussions and advice on the manuscript. N.P.R. and S.B. would like
to thank N. Rzechorzek, A. Simon, and S. Anjum for discussion and advice."
article_processing_charge: No
article_type: original
author:
- first_name: Gabriel
full_name: Tarrason Risa, Gabriel
last_name: Tarrason Risa
- first_name: Fredrik
full_name: Hurtig, Fredrik
last_name: Hurtig
- first_name: Sian
full_name: Bray, Sian
last_name: Bray
- first_name: Anne E.
full_name: Hafner, Anne E.
last_name: Hafner
- first_name: Lena
full_name: Harker-Kirschneck, Lena
last_name: Harker-Kirschneck
- first_name: Peter
full_name: Faull, Peter
last_name: Faull
- first_name: Colin
full_name: Davis, Colin
last_name: Davis
- first_name: Dimitra
full_name: Papatziamou, Dimitra
last_name: Papatziamou
- first_name: Delyan R.
full_name: Mutavchiev, Delyan R.
last_name: Mutavchiev
- first_name: Catherine
full_name: Fan, Catherine
last_name: Fan
- first_name: Leticia
full_name: Meneguello, Leticia
last_name: Meneguello
- first_name: Andre
full_name: Arashiro Pulschen, Andre
last_name: Arashiro Pulschen
- first_name: Gautam
full_name: Dey, Gautam
last_name: Dey
- first_name: Siân
full_name: Culley, Siân
last_name: Culley
- first_name: Mairi
full_name: Kilkenny, Mairi
last_name: Kilkenny
- first_name: Diorge P.
full_name: Souza, Diorge P.
last_name: Souza
- first_name: Luca
full_name: Pellegrini, Luca
last_name: Pellegrini
- first_name: Robertus A. M.
full_name: de Bruin, Robertus A. M.
last_name: de Bruin
- first_name: Ricardo
full_name: Henriques, Ricardo
last_name: Henriques
- first_name: Ambrosius P.
full_name: Snijders, Ambrosius P.
last_name: Snijders
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Ann-Christin
full_name: Lindås, Ann-Christin
last_name: Lindås
- first_name: Nicholas P.
full_name: Robinson, Nicholas P.
last_name: Robinson
- first_name: Buzz
full_name: Baum, Buzz
last_name: Baum
citation:
ama: Tarrason Risa G, Hurtig F, Bray S, et al. The proteasome controls ESCRT-III–mediated
cell division in an archaeon. Science. 2020;369(6504). doi:10.1126/science.aaz2532
apa: Tarrason Risa, G., Hurtig, F., Bray, S., Hafner, A. E., Harker-Kirschneck,
L., Faull, P., … Baum, B. (2020). The proteasome controls ESCRT-III–mediated cell
division in an archaeon. Science. American Association for the Advancement
of Science. https://doi.org/10.1126/science.aaz2532
chicago: Tarrason Risa, Gabriel, Fredrik Hurtig, Sian Bray, Anne E. Hafner, Lena
Harker-Kirschneck, Peter Faull, Colin Davis, et al. “The Proteasome Controls ESCRT-III–Mediated
Cell Division in an Archaeon.” Science. American Association for the Advancement
of Science, 2020. https://doi.org/10.1126/science.aaz2532.
ieee: G. Tarrason Risa et al., “The proteasome controls ESCRT-III–mediated
cell division in an archaeon,” Science, vol. 369, no. 6504. American Association
for the Advancement of Science, 2020.
ista: Tarrason Risa G, Hurtig F, Bray S, Hafner AE, Harker-Kirschneck L, Faull P,
Davis C, Papatziamou D, Mutavchiev DR, Fan C, Meneguello L, Arashiro Pulschen
A, Dey G, Culley S, Kilkenny M, Souza DP, Pellegrini L, de Bruin RAM, Henriques
R, Snijders AP, Šarić A, Lindås A-C, Robinson NP, Baum B. 2020. The proteasome
controls ESCRT-III–mediated cell division in an archaeon. Science. 369(6504).
mla: Tarrason Risa, Gabriel, et al. “The Proteasome Controls ESCRT-III–Mediated
Cell Division in an Archaeon.” Science, vol. 369, no. 6504, American Association
for the Advancement of Science, 2020, doi:10.1126/science.aaz2532.
short: G. Tarrason Risa, F. Hurtig, S. Bray, A.E. Hafner, L. Harker-Kirschneck,
P. Faull, C. Davis, D. Papatziamou, D.R. Mutavchiev, C. Fan, L. Meneguello, A.
Arashiro Pulschen, G. Dey, S. Culley, M. Kilkenny, D.P. Souza, L. Pellegrini,
R.A.M. de Bruin, R. Henriques, A.P. Snijders, A. Šarić, A.-C. Lindås, N.P. Robinson,
B. Baum, Science 369 (2020).
date_created: 2021-11-26T08:21:34Z
date_published: 2020-08-07T00:00:00Z
date_updated: 2021-11-26T08:58:33Z
day: '07'
doi: 10.1126/science.aaz2532
extern: '1'
external_id:
pmid:
- '32764038'
intvolume: ' 369'
issue: '6504'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/774273v1
month: '08'
oa: 1
oa_version: Preprint
pmid: 1
publication: Science
publication_identifier:
eissn:
- 1095-9203
issn:
- 0036-8075
publication_status: published
publisher: American Association for the Advancement of Science
quality_controlled: '1'
scopus_import: '1'
status: public
title: The proteasome controls ESCRT-III–mediated cell division in an archaeon
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 369
year: '2020'
...
---
_id: '10347'
abstract:
- lang: eng
text: Understanding the mechanism of action of compounds capable of inhibiting amyloid-fibril
formation is critical to the development of potential therapeutics against protein-misfolding
diseases. A fundamental challenge for progress is the range of possible target
species and the disparate timescales involved, since the aggregating proteins
are simultaneously the reactants, products, intermediates, and catalysts of the
reaction. It is a complex problem, therefore, to choose the states of the aggregating
proteins that should be bound by the compounds to achieve the most potent inhibition.
We present here a comprehensive kinetic theory of amyloid-aggregation inhibition
that reveals the fundamental thermodynamic and kinetic signatures characterizing
effective inhibitors by identifying quantitative relationships between the aggregation
and binding rate constants. These results provide general physical laws to guide
the design and optimization of inhibitors of amyloid-fibril formation, revealing
in particular the important role of on-rates in the binding of the inhibitors.
acknowledgement: We acknowledge support from Peterhouse, Cambridge (T.C.T.M.); the
Swiss National Science Foundation (T.C.T.M.); the Royal Society (A.S. and S.C.);
the Academy of Medical Sciences (A.S.); Sidney Sussex College, Cambridge (G.M.);
Newnham College, Cambridge (G.T.H.); the Wellcome Trust (T.P.J.K.); the Cambridge
Center for Misfolding Diseases (T.P.J.K. and M.V.); the Biotechnology and Biological
Sciences Research Council (T.P.J.K.); the Frances and Augustus Newman Foundation
(T.P.J.K.); and the Synapsis Foundation for Alzheimer’s disease (P.A.). The research
leading to these results has received funding from the European Research Council
(ERC) under the European Union’s Seventh Framework Program (FP7/2007-2013) through
the ERC Grant PhysProt (Agreement 337969).
article_processing_charge: No
article_type: original
author:
- first_name: Thomas C. T.
full_name: Michaels, Thomas C. T.
last_name: Michaels
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Georg
full_name: Meisl, Georg
last_name: Meisl
- first_name: Gabriella T.
full_name: Heller, Gabriella T.
last_name: Heller
- first_name: Samo
full_name: Curk, Samo
last_name: Curk
- first_name: Paolo
full_name: Arosio, Paolo
last_name: Arosio
- first_name: Sara
full_name: Linse, Sara
last_name: Linse
- first_name: Christopher M.
full_name: Dobson, Christopher M.
last_name: Dobson
- first_name: Michele
full_name: Vendruscolo, Michele
last_name: Vendruscolo
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
citation:
ama: Michaels TCT, Šarić A, Meisl G, et al. Thermodynamic and kinetic design principles
for amyloid-aggregation inhibitors. Proceedings of the National Academy of
Sciences. 2020;117(39):24251-24257. doi:10.1073/pnas.2006684117
apa: Michaels, T. C. T., Šarić, A., Meisl, G., Heller, G. T., Curk, S., Arosio,
P., … Knowles, T. P. J. (2020). Thermodynamic and kinetic design principles for
amyloid-aggregation inhibitors. Proceedings of the National Academy of Sciences.
National Academy of Sciences. https://doi.org/10.1073/pnas.2006684117
chicago: Michaels, Thomas C. T., Anđela Šarić, Georg Meisl, Gabriella T. Heller,
Samo Curk, Paolo Arosio, Sara Linse, Christopher M. Dobson, Michele Vendruscolo,
and Tuomas P. J. Knowles. “Thermodynamic and Kinetic Design Principles for Amyloid-Aggregation
Inhibitors.” Proceedings of the National Academy of Sciences. National
Academy of Sciences, 2020. https://doi.org/10.1073/pnas.2006684117.
ieee: T. C. T. Michaels et al., “Thermodynamic and kinetic design principles
for amyloid-aggregation inhibitors,” Proceedings of the National Academy of
Sciences, vol. 117, no. 39. National Academy of Sciences, pp. 24251–24257,
2020.
ista: Michaels TCT, Šarić A, Meisl G, Heller GT, Curk S, Arosio P, Linse S, Dobson
CM, Vendruscolo M, Knowles TPJ. 2020. Thermodynamic and kinetic design principles
for amyloid-aggregation inhibitors. Proceedings of the National Academy of Sciences.
117(39), 24251–24257.
mla: Michaels, Thomas C. T., et al. “Thermodynamic and Kinetic Design Principles
for Amyloid-Aggregation Inhibitors.” Proceedings of the National Academy of
Sciences, vol. 117, no. 39, National Academy of Sciences, 2020, pp. 24251–57,
doi:10.1073/pnas.2006684117.
short: T.C.T. Michaels, A. Šarić, G. Meisl, G.T. Heller, S. Curk, P. Arosio, S.
Linse, C.M. Dobson, M. Vendruscolo, T.P.J. Knowles, Proceedings of the National
Academy of Sciences 117 (2020) 24251–24257.
date_created: 2021-11-26T07:48:27Z
date_published: 2020-09-14T00:00:00Z
date_updated: 2021-11-26T08:59:06Z
day: '14'
doi: 10.1073/pnas.2006684117
extern: '1'
external_id:
pmid:
- '32929030'
intvolume: ' 117'
issue: '39'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.02.22.960716
month: '09'
oa: 1
oa_version: Published Version
page: 24251-24257
pmid: 1
publication: Proceedings of the National Academy of Sciences
publication_identifier:
eissn:
- 1091-6490
issn:
- 0027-8424
publication_status: published
publisher: National Academy of Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: Thermodynamic and kinetic design principles for amyloid-aggregation inhibitors
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 117
year: '2020'
...
---
_id: '10351'
abstract:
- lang: eng
text: Oligomeric species populated during the aggregation of the Aβ42 peptide have
been identified as potent cytotoxins linked to Alzheimer’s disease, but the fundamental
molecular pathways that control their dynamics have yet to be elucidated. By developing
a general approach that combines theory, experiment and simulation, we reveal,
in molecular detail, the mechanisms of Aβ42 oligomer dynamics during amyloid fibril
formation. Even though all mature amyloid fibrils must originate as oligomers,
we found that most Aβ42 oligomers dissociate into their monomeric precursors without
forming new fibrils. Only a minority of oligomers converts into fibrillar structures.
Moreover, the heterogeneous ensemble of oligomeric species interconverts on timescales
comparable to those of aggregation. Our results identify fundamentally new steps
that could be targeted by therapeutic interventions designed to combat protein
misfolding diseases.
acknowledgement: We acknowledge support from Peterhouse (T.C.T.M.), the Swiss National
Science foundation (T.C.T.M.), the Royal Society (A.Š.), the Academy of Medical
Sciences (A.Š.), the UCL Institute for the Physics of Living Systems (S.C.), Sidney
Sussex College (G.M.), the Wellcome Trust (A.Š., M.V., C.M.D. and T.P.J.K.), the
Schiff Foundation (A.J.D.), the Cambridge Centre for Misfolding Diseases (M.V.,
C.M.D. and T.P.J.K.), the BBSRC (C.M.D. and T.P.J.K.), the Frances and Augustus
Newman Foundation (T.P.J.K.), the Swedish Research Council (S.L.) and the ERC grant
MAMBA (S.L., agreement no. 340890). The research that led to these results received
funding from the European Research Council under the European Union’s Seventh Framework
Programme (FP7/2007-2013) through the ERC grant PhysProt (agreement no. 337969).
article_processing_charge: No
article_type: original
author:
- first_name: Thomas C. T.
full_name: Michaels, Thomas C. T.
last_name: Michaels
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Samo
full_name: Curk, Samo
last_name: Curk
- first_name: Katja
full_name: Bernfur, Katja
last_name: Bernfur
- first_name: Paolo
full_name: Arosio, Paolo
last_name: Arosio
- first_name: Georg
full_name: Meisl, Georg
last_name: Meisl
- first_name: Alexander J.
full_name: Dear, Alexander J.
last_name: Dear
- first_name: Samuel I. A.
full_name: Cohen, Samuel I. A.
last_name: Cohen
- first_name: Christopher M.
full_name: Dobson, Christopher M.
last_name: Dobson
- first_name: Michele
full_name: Vendruscolo, Michele
last_name: Vendruscolo
- first_name: Sara
full_name: Linse, Sara
last_name: Linse
- first_name: Tuomas P. J.
full_name: Knowles, Tuomas P. J.
last_name: Knowles
citation:
ama: Michaels TCT, Šarić A, Curk S, et al. Dynamics of oligomer populations formed
during the aggregation of Alzheimer’s Aβ42 peptide. Nature Chemistry. 2020;12(5):445-451.
doi:10.1038/s41557-020-0452-1
apa: Michaels, T. C. T., Šarić, A., Curk, S., Bernfur, K., Arosio, P., Meisl, G.,
… Knowles, T. P. J. (2020). Dynamics of oligomer populations formed during the
aggregation of Alzheimer’s Aβ42 peptide. Nature Chemistry. Springer Nature.
https://doi.org/10.1038/s41557-020-0452-1
chicago: Michaels, Thomas C. T., Anđela Šarić, Samo Curk, Katja Bernfur, Paolo Arosio,
Georg Meisl, Alexander J. Dear, et al. “Dynamics of Oligomer Populations Formed
during the Aggregation of Alzheimer’s Aβ42 Peptide.” Nature Chemistry.
Springer Nature, 2020. https://doi.org/10.1038/s41557-020-0452-1.
ieee: T. C. T. Michaels et al., “Dynamics of oligomer populations formed
during the aggregation of Alzheimer’s Aβ42 peptide,” Nature Chemistry,
vol. 12, no. 5. Springer Nature, pp. 445–451, 2020.
ista: Michaels TCT, Šarić A, Curk S, Bernfur K, Arosio P, Meisl G, Dear AJ, Cohen
SIA, Dobson CM, Vendruscolo M, Linse S, Knowles TPJ. 2020. Dynamics of oligomer
populations formed during the aggregation of Alzheimer’s Aβ42 peptide. Nature
Chemistry. 12(5), 445–451.
mla: Michaels, Thomas C. T., et al. “Dynamics of Oligomer Populations Formed during
the Aggregation of Alzheimer’s Aβ42 Peptide.” Nature Chemistry, vol. 12,
no. 5, Springer Nature, 2020, pp. 445–51, doi:10.1038/s41557-020-0452-1.
short: T.C.T. Michaels, A. Šarić, S. Curk, K. Bernfur, P. Arosio, G. Meisl, A.J.
Dear, S.I.A. Cohen, C.M. Dobson, M. Vendruscolo, S. Linse, T.P.J. Knowles, Nature
Chemistry 12 (2020) 445–451.
date_created: 2021-11-26T09:15:13Z
date_published: 2020-04-13T00:00:00Z
date_updated: 2021-11-26T11:21:08Z
day: '13'
doi: 10.1038/s41557-020-0452-1
extern: '1'
external_id:
pmid:
- '32303714'
intvolume: ' 12'
issue: '5'
keyword:
- general chemical engineering
- general chemistry
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/2020.01.08.897488
month: '04'
oa: 1
oa_version: None
page: 445-451
pmid: 1
publication: Nature Chemistry
publication_identifier:
eissn:
- 1755-4349
issn:
- 1755-4330
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1038/s41557-020-0468-6
scopus_import: '1'
status: public
title: Dynamics of oligomer populations formed during the aggregation of Alzheimer’s
Aβ42 peptide
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 12
year: '2020'
...
---
_id: '10348'
abstract:
- lang: eng
text: The endosomal sorting complex required for transport-III (ESCRT-III) catalyzes
membrane fission from within membrane necks, a process that is essential for many
cellular functions, from cell division to lysosome degradation and autophagy.
How it breaks membranes, though, remains unknown. Here, we characterize a sequential
polymerization of ESCRT-III subunits that, driven by a recruitment cascade and
by continuous subunit-turnover powered by the ATPase Vps4, induces membrane deformation
and fission. During this process, the exchange of Vps24 for Did2 induces a tilt
in the polymer-membrane interface, which triggers transition from flat spiral
polymers to helical filament to drive the formation of membrane protrusions, and
ends with the formation of a highly constricted Did2-Ist1 co-polymer that we show
is competent to promote fission when bound on the inside of membrane necks. Overall,
our results suggest a mechanism of stepwise changes in ESCRT-III filament structure
and mechanical properties via exchange of the filament subunits to catalyze ESCRT-III
activity.
acknowledgement: The authors thank Nicolas Chiaruttini, Jean Gruenberg, and Lena Harker-Kirschneck
for careful correction of this manuscript and helpful discussions. The authors want
to thank the NCCR Chemical Biology for constant support during this project. A.R.
acknowledges funding from the Swiss National Fund for Research (31003A_130520, 31003A_149975,
and 31003A_173087) and the European Research Council Consolidator (311536). A.Š.
acknowledges the European Research Council (802960). B.B. thanks the BBSRC (BB/K009001/1)
and Wellcome Trust (203276/Z/16/Z) for support. J.M.v.F. acknowledges funding through
an EMBO Long-Term Fellowship (ALTF 1065-2015), the European Commission FP7 (Marie
Curie Actions, LTFCOFUND2013, and GA-2013-609409), and a Transitional Postdoc fellowship
(2015/345) from the Swiss SystemsX.ch initiative, evaluated by the Swiss National
Science Foundation and Swiss National Science Foundation Research (SNSF SINERGIA
160728/1 [leader, Sophie Martin]).
article_processing_charge: No
article_type: original
author:
- first_name: Anna-Katharina
full_name: Pfitzner, Anna-Katharina
last_name: Pfitzner
- first_name: Vincent
full_name: Mercier, Vincent
last_name: Mercier
- first_name: Xiuyun
full_name: Jiang, Xiuyun
last_name: Jiang
- first_name: Joachim
full_name: Moser von Filseck, Joachim
last_name: Moser von Filseck
- first_name: Buzz
full_name: Baum, Buzz
last_name: Baum
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Aurélien
full_name: Roux, Aurélien
last_name: Roux
citation:
ama: Pfitzner A-K, Mercier V, Jiang X, et al. An ESCRT-III polymerization sequence
drives membrane deformation and fission. Cell. 2020;182(5):1140-1155.e18.
doi:10.1016/j.cell.2020.07.021
apa: Pfitzner, A.-K., Mercier, V., Jiang, X., Moser von Filseck, J., Baum, B., Šarić,
A., & Roux, A. (2020). An ESCRT-III polymerization sequence drives membrane
deformation and fission. Cell. Elsevier. https://doi.org/10.1016/j.cell.2020.07.021
chicago: Pfitzner, Anna-Katharina, Vincent Mercier, Xiuyun Jiang, Joachim Moser
von Filseck, Buzz Baum, Anđela Šarić, and Aurélien Roux. “An ESCRT-III Polymerization
Sequence Drives Membrane Deformation and Fission.” Cell. Elsevier, 2020.
https://doi.org/10.1016/j.cell.2020.07.021.
ieee: A.-K. Pfitzner et al., “An ESCRT-III polymerization sequence drives
membrane deformation and fission,” Cell, vol. 182, no. 5. Elsevier, p.
1140–1155.e18, 2020.
ista: Pfitzner A-K, Mercier V, Jiang X, Moser von Filseck J, Baum B, Šarić A, Roux
A. 2020. An ESCRT-III polymerization sequence drives membrane deformation and
fission. Cell. 182(5), 1140–1155.e18.
mla: Pfitzner, Anna-Katharina, et al. “An ESCRT-III Polymerization Sequence Drives
Membrane Deformation and Fission.” Cell, vol. 182, no. 5, Elsevier, 2020,
p. 1140–1155.e18, doi:10.1016/j.cell.2020.07.021.
short: A.-K. Pfitzner, V. Mercier, X. Jiang, J. Moser von Filseck, B. Baum, A. Šarić,
A. Roux, Cell 182 (2020) 1140–1155.e18.
date_created: 2021-11-26T08:02:27Z
date_published: 2020-08-18T00:00:00Z
date_updated: 2021-11-26T08:58:37Z
day: '18'
doi: 10.1016/j.cell.2020.07.021
extern: '1'
external_id:
pmid:
- '32814015'
intvolume: ' 182'
issue: '5'
keyword:
- general biochemistry
- genetics and molecular biology
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.sciencedirect.com/science/article/pii/S0092867420309296
month: '08'
oa: 1
oa_version: Published Version
page: 1140-1155.e18
pmid: 1
publication: Cell
publication_identifier:
issn:
- 0092-8674
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: An ESCRT-III polymerization sequence drives membrane deformation and fission
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 182
year: '2020'
...
---
_id: '10352'
abstract:
- lang: eng
text: In the nuclear pore complex, intrinsically disordered nuclear pore proteins
(FG Nups) form a selective barrier for transport into and out of the cell nucleus,
in a way that remains poorly understood. The collective FG Nup behavior has long
been conceptualized either as a polymer brush, dominated by entropic and excluded-volume
(repulsive) interactions, or as a hydrogel, dominated by cohesive (attractive)
interactions between FG Nups. Here we compare mesoscale computational simulations
with a wide range of experimental data to demonstrate that FG Nups are at the
crossover point between these two regimes. Specifically, we find that repulsive
and attractive interactions are balanced, resulting in morphologies and dynamics
that are close to those of ideal polymer chains. We demonstrate that this property
of FG Nups yields sufficient cohesion to seal the transport barrier, and yet maintains
fast dynamics at the molecular scale, permitting the rapid polymer rearrangements
needed for transport events.
acknowledgement: We thank Dino Osmanović (MIT), Roy Beck (Tel-Aviv), Larissa Kapinos
(Basel), Roderick Lim (Basel), Ralf Richter (Leeds), and Anton Zilman (Toronto)
for discussions. This work was funded by the Royal Society (A.Š.) and the UK Engineering
and Physical Sciences Research Council (EP/L504889/1, B.W.H.).
article_number: '022420'
article_processing_charge: No
article_type: original
author:
- first_name: Luke K.
full_name: Davis, Luke K.
last_name: Davis
- first_name: Ian J.
full_name: Ford, Ian J.
last_name: Ford
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
- first_name: Bart W.
full_name: Hoogenboom, Bart W.
last_name: Hoogenboom
citation:
ama: Davis LK, Ford IJ, Šarić A, Hoogenboom BW. Intrinsically disordered nuclear
pore proteins show ideal-polymer morphologies and dynamics. Physical Review
E. 2020;101(2). doi:10.1103/physreve.101.022420
apa: Davis, L. K., Ford, I. J., Šarić, A., & Hoogenboom, B. W. (2020). Intrinsically
disordered nuclear pore proteins show ideal-polymer morphologies and dynamics.
Physical Review E. American Physical Society. https://doi.org/10.1103/physreve.101.022420
chicago: Davis, Luke K., Ian J. Ford, Anđela Šarić, and Bart W. Hoogenboom. “Intrinsically
Disordered Nuclear Pore Proteins Show Ideal-Polymer Morphologies and Dynamics.”
Physical Review E. American Physical Society, 2020. https://doi.org/10.1103/physreve.101.022420.
ieee: L. K. Davis, I. J. Ford, A. Šarić, and B. W. Hoogenboom, “Intrinsically disordered
nuclear pore proteins show ideal-polymer morphologies and dynamics,” Physical
Review E, vol. 101, no. 2. American Physical Society, 2020.
ista: Davis LK, Ford IJ, Šarić A, Hoogenboom BW. 2020. Intrinsically disordered
nuclear pore proteins show ideal-polymer morphologies and dynamics. Physical Review
E. 101(2), 022420.
mla: Davis, Luke K., et al. “Intrinsically Disordered Nuclear Pore Proteins Show
Ideal-Polymer Morphologies and Dynamics.” Physical Review E, vol. 101,
no. 2, 022420, American Physical Society, 2020, doi:10.1103/physreve.101.022420.
short: L.K. Davis, I.J. Ford, A. Šarić, B.W. Hoogenboom, Physical Review E 101 (2020).
date_created: 2021-11-26T09:41:04Z
date_published: 2020-02-28T00:00:00Z
date_updated: 2021-11-26T11:21:16Z
day: '28'
doi: 10.1103/physreve.101.022420
extern: '1'
external_id:
pmid:
- '32168597'
intvolume: ' 101'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/571687
month: '02'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review E
publication_identifier:
eissn:
- 2470-0053
issn:
- 2470-0045
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Intrinsically disordered nuclear pore proteins show ideal-polymer morphologies
and dynamics
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 101
year: '2020'
...
---
_id: '10353'
abstract:
- lang: eng
text: Experiments have suggested that bacterial mechanosensitive channels separate
into 2D clusters, the role of which is unclear. By developing a coarse-grained
computer model we find that clustering promotes the channel closure, which is
highly dependent on the channel concentration and membrane stress. This behaviour
yields a tightly regulated gating system, whereby at high tensions channels gate
individually, and at lower tensions the channels spontaneously aggregate and inactivate.
We implement this positive feedback into the model for cell volume regulation,
and find that the channel clustering protects the cell against excessive loss
of cytoplasmic content.
acknowledgement: We thank Samantha Miller, Bert Poolman, and the members of Šarić
and Pilizota laboratories for useful discussion. We acknowledge support from the
Engineering and Physical Sciences Research Council (A.P. and A.Š.), the UCL Institute
for the Physics of Living Systems (A.P. and A.Š.), Darwin Trust of University of
Edinburgh (H.S.), Industrial Biotechnology Innovation Centre (H.S. and T.P.), BBSRC
Council Crossing Biological Membrane Network (H.S. and T.P.), BBSRC/EPSRC/MRC Synthetic
Biology Research Centre (T.P.), and the Royal Society (A.Š.).
article_number: '048102'
article_processing_charge: No
article_type: original
author:
- first_name: Alexandru
full_name: Paraschiv, Alexandru
last_name: Paraschiv
- first_name: Smitha
full_name: Hegde, Smitha
last_name: Hegde
- first_name: Raman
full_name: Ganti, Raman
last_name: Ganti
- first_name: Teuta
full_name: Pilizota, Teuta
last_name: Pilizota
- first_name: Anđela
full_name: Šarić, Anđela
id: bf63d406-f056-11eb-b41d-f263a6566d8b
last_name: Šarić
orcid: 0000-0002-7854-2139
citation:
ama: Paraschiv A, Hegde S, Ganti R, Pilizota T, Šarić A. Dynamic clustering regulates
activity of mechanosensitive membrane channels. Physical Review Letters.
2020;124(4). doi:10.1103/physrevlett.124.048102
apa: Paraschiv, A., Hegde, S., Ganti, R., Pilizota, T., & Šarić, A. (2020).
Dynamic clustering regulates activity of mechanosensitive membrane channels. Physical
Review Letters. American Physical Society. https://doi.org/10.1103/physrevlett.124.048102
chicago: Paraschiv, Alexandru, Smitha Hegde, Raman Ganti, Teuta Pilizota, and Anđela
Šarić. “Dynamic Clustering Regulates Activity of Mechanosensitive Membrane Channels.”
Physical Review Letters. American Physical Society, 2020. https://doi.org/10.1103/physrevlett.124.048102.
ieee: A. Paraschiv, S. Hegde, R. Ganti, T. Pilizota, and A. Šarić, “Dynamic clustering
regulates activity of mechanosensitive membrane channels,” Physical Review
Letters, vol. 124, no. 4. American Physical Society, 2020.
ista: Paraschiv A, Hegde S, Ganti R, Pilizota T, Šarić A. 2020. Dynamic clustering
regulates activity of mechanosensitive membrane channels. Physical Review Letters.
124(4), 048102.
mla: Paraschiv, Alexandru, et al. “Dynamic Clustering Regulates Activity of Mechanosensitive
Membrane Channels.” Physical Review Letters, vol. 124, no. 4, 048102, American
Physical Society, 2020, doi:10.1103/physrevlett.124.048102.
short: A. Paraschiv, S. Hegde, R. Ganti, T. Pilizota, A. Šarić, Physical Review
Letters 124 (2020).
date_created: 2021-11-26T09:57:01Z
date_published: 2020-01-31T00:00:00Z
date_updated: 2021-11-26T11:21:12Z
day: '31'
doi: 10.1103/physrevlett.124.048102
extern: '1'
external_id:
pmid:
- '32058787'
intvolume: ' 124'
issue: '4'
keyword:
- general physics and astronomy
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://www.biorxiv.org/content/10.1101/553248
month: '01'
oa: 1
oa_version: Preprint
pmid: 1
publication: Physical Review Letters
publication_identifier:
eissn:
- 1079-7114
issn:
- 0031-9007
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic clustering regulates activity of mechanosensitive membrane channels
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 124
year: '2020'
...
---
_id: '10557'
abstract:
- lang: eng
text: Data storage and retrieval systems, methods, and computer-readable media utilize
a cryptographically verifiable data structure that facilitates verification of
a transaction in a decentralized peer-to-peer environment using multi-hop backwards
and forwards links. Backward links are cryptographic hashes of past records. Forward
links are cryptographic signatures of future records that are added retroactively
to records once the target block has been appended to the data structure.
applicant:
- Ecole Polytechnique Federale de Lausanne
application_date: 2017-06-09
article_processing_charge: No
author:
- first_name: Bryan
full_name: Ford, Bryan
last_name: Ford
- first_name: Linus
full_name: Gasse, Linus
last_name: Gasse
- first_name: Eleftherios
full_name: Kokoris Kogias, Eleftherios
id: f5983044-d7ef-11ea-ac6d-fd1430a26d30
last_name: Kokoris Kogias
- first_name: Philipp
full_name: Jovanovic, Philipp
last_name: Jovanovic
citation:
ama: Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. Cryptographically verifiable
data structure having multi-hop forward and backwards links and associated systems
and methods. 2020.
apa: Ford, B., Gasse, L., Kokoris Kogias, E., & Jovanovic, P. (2020). Cryptographically
verifiable data structure having multi-hop forward and backwards links and associated
systems and methods.
chicago: Ford, Bryan, Linus Gasse, Eleftherios Kokoris Kogias, and Philipp Jovanovic.
“Cryptographically Verifiable Data Structure Having Multi-Hop Forward and Backwards
Links and Associated Systems and Methods,” 2020.
ieee: B. Ford, L. Gasse, E. Kokoris Kogias, and P. Jovanovic, “Cryptographically
verifiable data structure having multi-hop forward and backwards links and associated
systems and methods.” 2020.
ista: Ford B, Gasse L, Kokoris Kogias E, Jovanovic P. 2020. Cryptographically verifiable
data structure having multi-hop forward and backwards links and associated systems
and methods.
mla: Ford, Bryan, et al. Cryptographically Verifiable Data Structure Having Multi-Hop
Forward and Backwards Links and Associated Systems and Methods. 2020.
short: B. Ford, L. Gasse, E. Kokoris Kogias, P. Jovanovic, (2020).
date_created: 2021-12-16T13:28:59Z
date_published: 2020-03-03T00:00:00Z
date_updated: 2021-12-21T10:04:50Z
day: '03'
department:
- _id: ElKo
extern: '1'
ipc: ' H04L9/3247 ; G06Q20/29 ; G06Q20/382 ; H04L9/3236'
ipn: '10581613'
main_file_link:
- open_access: '1'
url: https://patents.google.com/patent/US10581613B2/en
month: '03'
oa: 1
oa_version: Published Version
publication_date: 2020-03-03
related_material:
link:
- relation: earlier_version
url: https://patents.google.com/patent/US20180359096A1/en
status: public
title: Cryptographically verifiable data structure having multi-hop forward and backwards
links and associated systems and methods
type: patent
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2020'
...
---
_id: '10618'
abstract:
- lang: eng
text: Magnetism typically arises from the joint effect of Fermi statistics and repulsive
Coulomb interactions, which favours ground states with non-zero electron spin.
As a result, controlling spin magnetism with electric fields—a longstanding technological
goal in spintronics and multiferroics1,2—can be achieved only indirectly. Here
we experimentally demonstrate direct electric-field control of magnetic states
in an orbital Chern insulator3,4,5,6, a magnetic system in which non-trivial band
topology favours long-range order of orbital angular momentum but the spins are
thought to remain disordered7,8,9,10,11,12,13,14. We use van der Waals heterostructures
consisting of a graphene monolayer rotationally faulted with respect to a Bernal-stacked
bilayer to realize narrow and topologically non-trivial valley-projected moiré
minibands15,16,17. At fillings of one and three electrons per moiré unit cell
within these bands, we observe quantized anomalous Hall effects18 with transverse
resistance approximately equal to h/2e2 (where h is Planck’s constant and e is
the charge on the electron), which is indicative of spontaneous polarization of
the system into a single-valley-projected band with a Chern number equal to two.
At a filling of three electrons per moiré unit cell, we find that the sign of
the quantum anomalous Hall effect can be reversed via field-effect control of
the chemical potential; moreover, this transition is hysteretic, which we use
to demonstrate non-volatile electric-field-induced reversal of the magnetic state.
A theoretical analysis19 indicates that the effect arises from the topological
edge states, which drive a change in sign of the magnetization and thus a reversal
in the favoured magnetic state. Voltage control of magnetic states can be used
to electrically pattern non-volatile magnetic-domain structures hosting chiral
edge states, with applications ranging from reconfigurable microwave circuit elements
to ultralow-power magnetic memories.
acknowledgement: We acknowledge discussions with J. Checkelsky, S. Chen, C. Dean,
M. Yankowitz, D. Reilly, I. Sodemann and M. Zaletel. Work at UCSB was primarily
supported by the ARO under MURI W911NF-16-1-0361. Measurements of twisted bilayer
graphene (Extended Data Fig. 8) and measurements at elevated temperatures (Extended
Data Fig. 3) were supported by a SEED grant and made use of shared facilities of
the UCSB MRSEC (NSF DMR 1720256), a member of the Materials Research Facilities
Network (www.mrfn.org). A.F.Y. acknowledges the support of the David and Lucille
Packard Foundation under award 2016-65145. A.H.M. and J.Z. were supported by the
National Science Foundation through the Center for Dynamics and Control of Materials,
an NSF MRSEC under Cooperative Agreement number DMR-1720595, and by the Welch Foundation
under grant TBF1473. C.L.T. acknowledges support from the Hertz Foundation and from
the National Science Foundation Graduate Research Fellowship Program under grant
1650114. K.W. and T.T. acknowledge support from the Elemental Strategy Initiative
conducted by the MEXT, Japan, Grant Number JPMXP0112101001, JSPS KAKENHI grant numbers
JP20H00354 and the CREST(JPMJCR15F3), JST.
article_processing_charge: No
article_type: original
author:
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: J.
full_name: Zhu, J.
last_name: Zhu
- first_name: M. A.
full_name: Kumar, M. A.
last_name: Kumar
- first_name: Y.
full_name: Zhang, Y.
last_name: Zhang
- first_name: F.
full_name: Yang, F.
last_name: Yang
- first_name: C. L.
full_name: Tschirhart, C. L.
last_name: Tschirhart
- first_name: M.
full_name: Serlin, M.
last_name: Serlin
- first_name: K.
full_name: Watanabe, K.
last_name: Watanabe
- first_name: T.
full_name: Taniguchi, T.
last_name: Taniguchi
- first_name: A. H.
full_name: MacDonald, A. H.
last_name: MacDonald
- first_name: A. F.
full_name: Young, A. F.
last_name: Young
citation:
ama: Polshyn H, Zhu J, Kumar MA, et al. Electrical switching of magnetic order in
an orbital Chern insulator. Nature. 2020;588(7836):66-70. doi:10.1038/s41586-020-2963-8
apa: Polshyn, H., Zhu, J., Kumar, M. A., Zhang, Y., Yang, F., Tschirhart, C. L.,
… Young, A. F. (2020). Electrical switching of magnetic order in an orbital Chern
insulator. Nature. Springer Nature. https://doi.org/10.1038/s41586-020-2963-8
chicago: Polshyn, Hryhoriy, J. Zhu, M. A. Kumar, Y. Zhang, F. Yang, C. L. Tschirhart,
M. Serlin, et al. “Electrical Switching of Magnetic Order in an Orbital Chern
Insulator.” Nature. Springer Nature, 2020. https://doi.org/10.1038/s41586-020-2963-8.
ieee: H. Polshyn et al., “Electrical switching of magnetic order in an orbital
Chern insulator,” Nature, vol. 588, no. 7836. Springer Nature, pp. 66–70,
2020.
ista: Polshyn H, Zhu J, Kumar MA, Zhang Y, Yang F, Tschirhart CL, Serlin M, Watanabe
K, Taniguchi T, MacDonald AH, Young AF. 2020. Electrical switching of magnetic
order in an orbital Chern insulator. Nature. 588(7836), 66–70.
mla: Polshyn, Hryhoriy, et al. “Electrical Switching of Magnetic Order in an Orbital
Chern Insulator.” Nature, vol. 588, no. 7836, Springer Nature, 2020, pp.
66–70, doi:10.1038/s41586-020-2963-8.
short: H. Polshyn, J. Zhu, M.A. Kumar, Y. Zhang, F. Yang, C.L. Tschirhart, M. Serlin,
K. Watanabe, T. Taniguchi, A.H. MacDonald, A.F. Young, Nature 588 (2020) 66–70.
date_created: 2022-01-13T14:12:17Z
date_published: 2020-11-23T00:00:00Z
date_updated: 2022-01-13T14:21:04Z
day: '23'
doi: 10.1038/s41586-020-2963-8
extern: '1'
external_id:
arxiv:
- '2004.11353'
pmid:
- '33230333'
intvolume: ' 588'
issue: '7836'
keyword:
- multidisciplinary
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2004.11353
month: '11'
oa: 1
oa_version: Preprint
page: 66-70
pmid: 1
publication: Nature
publication_identifier:
eissn:
- 1476-4687
issn:
- 0028-0836
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Electrical switching of magnetic order in an orbital Chern insulator
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 588
year: '2020'
...
---
_id: '10650'
abstract:
- lang: eng
text: The understanding of material systems with strong electron-electron interactions
is the central problem in modern condensed matter physics. Despite this, the essential
physics of many of these materials is still not understood and we have no overall
perspective on their properties. Moreover, we have very little ability to make
predictions in this class of systems. In this manuscript we share our personal
views of what the major open problems are in correlated electron systems and we
discuss some possible routes to make progress in this rich and fascinating field.
This manuscript is the result of the vigorous discussions and deliberations that
took place at Johns Hopkins University during a three-day workshop January 27,
28, and 29, 2020 that brought together six senior scientists and 46 more junior
scientists. Our hope, is that the topics we have presented will provide inspiration
for others working in this field and motivation for the idea that significant
progress can be made on very hard problems if we focus our collective energies.
acknowledgement: "We thank NSF CMP program for suggestions regarding the topic and
general structure of the workshop. This project was supported by the NSF DMR-2002329
and The Gordon and Betty Moore Foundation (GBMF) EPiQS initiative. We would like
to sincerely thank A. Kapitulnik, A. J. Leggett, M.B. Maple, T.M. McQueen, M. Norman,
P. S. Riseborough, and G. A. Sawatzky for their lectures at the workshop and advice
on the writing of this manuscript. We would also like to thank G. Blumberg, C. Broholm,
S. Crooker, N. Drichko, and A. Patel for helpful consultation on topics discussed\r\nherein.
A number of individuals also had independent support: (AA, EH; GBMF-4305), (IMH;
GBMF-9071), (HJC; NHMFL is supported by the NSF DMR-1644779 and the state of Florida),
(YH, AZ; Miller Institute for Basic Research in Science), (YC; US DOE-BES DEAC02-06CH11357),
(AS; Spallation Neutron Source, a DOE Office of Science User Facility operated by
ORNL), (SAAG; ARO-W911NF-18-1-0290, NSF DMR-1455233), (YW; DOE-BES DE-SC0019331,
GBMF-4532)."
article_processing_charge: No
author:
- first_name: A
full_name: Alexandradinata, A
last_name: Alexandradinata
- first_name: N.P.
full_name: Armitage, N.P.
last_name: Armitage
- first_name: Andrey
full_name: Baydin, Andrey
last_name: Baydin
- first_name: Wenli
full_name: Bi, Wenli
last_name: Bi
- first_name: Yue
full_name: Cao, Yue
last_name: Cao
- first_name: Hitesh J.
full_name: Changlani, Hitesh J.
last_name: Changlani
- first_name: Eli
full_name: Chertkov, Eli
last_name: Chertkov
- first_name: Eduardo H.
full_name: da Silva Neto, Eduardo H.
last_name: da Silva Neto
- first_name: Luca
full_name: Delacretaz, Luca
last_name: Delacretaz
- first_name: Ismail
full_name: El Baggari, Ismail
last_name: El Baggari
- first_name: G.M.
full_name: Ferguson, G.M.
last_name: Ferguson
- first_name: William J.
full_name: Gannon, William J.
last_name: Gannon
- first_name: Sayed Ali Akbar
full_name: Ghorashi, Sayed Ali Akbar
last_name: Ghorashi
- first_name: Berit H.
full_name: Goodge, Berit H.
last_name: Goodge
- first_name: Olga
full_name: Goulko, Olga
last_name: Goulko
- first_name: G.
full_name: Grissonnache, G.
last_name: Grissonnache
- first_name: Alannah
full_name: Hallas, Alannah
last_name: Hallas
- first_name: Ian M.
full_name: Hayes, Ian M.
last_name: Hayes
- first_name: Yu
full_name: He, Yu
last_name: He
- first_name: Edwin W.
full_name: Huang, Edwin W.
last_name: Huang
- first_name: Anshu
full_name: Kogar, Anshu
last_name: Kogar
- first_name: Divine
full_name: Kumah, Divine
last_name: Kumah
- first_name: Jong Yeon
full_name: Lee, Jong Yeon
last_name: Lee
- first_name: A.
full_name: Legros, A.
last_name: Legros
- first_name: Fahad
full_name: Mahmood, Fahad
last_name: Mahmood
- first_name: Yulia
full_name: Maximenko, Yulia
last_name: Maximenko
- first_name: Nick
full_name: Pellatz, Nick
last_name: Pellatz
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Tarapada
full_name: Sarkar, Tarapada
last_name: Sarkar
- first_name: Allen
full_name: Scheie, Allen
last_name: Scheie
- first_name: Kyle L.
full_name: Seyler, Kyle L.
last_name: Seyler
- first_name: Zhenzhong
full_name: Shi, Zhenzhong
last_name: Shi
- first_name: Brian
full_name: Skinner, Brian
last_name: Skinner
- first_name: Lucia
full_name: Steinke, Lucia
last_name: Steinke
- first_name: K.
full_name: Thirunavukkuarasu, K.
last_name: Thirunavukkuarasu
- first_name: Thaís Victa
full_name: Trevisan, Thaís Victa
last_name: Trevisan
- first_name: Michael
full_name: Vogl, Michael
last_name: Vogl
- first_name: Pavel A.
full_name: Volkov, Pavel A.
last_name: Volkov
- first_name: Yao
full_name: Wang, Yao
last_name: Wang
- first_name: Yishu
full_name: Wang, Yishu
last_name: Wang
- first_name: Di
full_name: Wei, Di
last_name: Wei
- first_name: Kaya
full_name: Wei, Kaya
last_name: Wei
- first_name: Shuolong
full_name: Yang, Shuolong
last_name: Yang
- first_name: Xian
full_name: Zhang, Xian
last_name: Zhang
- first_name: Ya-Hui
full_name: Zhang, Ya-Hui
last_name: Zhang
- first_name: Liuyan
full_name: Zhao, Liuyan
last_name: Zhao
- first_name: Alfred
full_name: Zong, Alfred
last_name: Zong
citation:
ama: Alexandradinata A, Armitage NP, Baydin A, et al. The future of the correlated
electron problem. arXiv.
apa: Alexandradinata, A., Armitage, N. P., Baydin, A., Bi, W., Cao, Y., Changlani,
H. J., … Zong, A. (n.d.). The future of the correlated electron problem. arXiv.
chicago: Alexandradinata, A, N.P. Armitage, Andrey Baydin, Wenli Bi, Yue Cao, Hitesh
J. Changlani, Eli Chertkov, et al. “The Future of the Correlated Electron Problem.”
ArXiv, n.d.
ieee: A. Alexandradinata et al., “The future of the correlated electron problem,”
arXiv. .
ista: Alexandradinata A, Armitage NP, Baydin A, Bi W, Cao Y, Changlani HJ, Chertkov
E, da Silva Neto EH, Delacretaz L, El Baggari I, Ferguson GM, Gannon WJ, Ghorashi
SAA, Goodge BH, Goulko O, Grissonnache G, Hallas A, Hayes IM, He Y, Huang EW,
Kogar A, Kumah D, Lee JY, Legros A, Mahmood F, Maximenko Y, Pellatz N, Polshyn
H, Sarkar T, Scheie A, Seyler KL, Shi Z, Skinner B, Steinke L, Thirunavukkuarasu
K, Trevisan TV, Vogl M, Volkov PA, Wang Y, Wang Y, Wei D, Wei K, Yang S, Zhang
X, Zhang Y-H, Zhao L, Zong A. The future of the correlated electron problem. arXiv,
.
mla: Alexandradinata, A., et al. “The Future of the Correlated Electron Problem.”
ArXiv.
short: A. Alexandradinata, N.P. Armitage, A. Baydin, W. Bi, Y. Cao, H.J. Changlani,
E. Chertkov, E.H. da Silva Neto, L. Delacretaz, I. El Baggari, G.M. Ferguson,
W.J. Gannon, S.A.A. Ghorashi, B.H. Goodge, O. Goulko, G. Grissonnache, A. Hallas,
I.M. Hayes, Y. He, E.W. Huang, A. Kogar, D. Kumah, J.Y. Lee, A. Legros, F. Mahmood,
Y. Maximenko, N. Pellatz, H. Polshyn, T. Sarkar, A. Scheie, K.L. Seyler, Z. Shi,
B. Skinner, L. Steinke, K. Thirunavukkuarasu, T.V. Trevisan, M. Vogl, P.A. Volkov,
Y. Wang, Y. Wang, D. Wei, K. Wei, S. Yang, X. Zhang, Y.-H. Zhang, L. Zhao, A.
Zong, ArXiv (n.d.).
date_created: 2022-01-20T10:55:36Z
date_published: 2020-10-01T00:00:00Z
date_updated: 2022-01-24T08:05:51Z
day: '01'
extern: '1'
external_id:
arxiv:
- '2010.00584'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2010.00584
month: '10'
oa: 1
oa_version: Preprint
page: '55'
publication: arXiv
publication_status: submitted
status: public
title: The future of the correlated electron problem
type: preprint
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2020'
...
---
_id: '10673'
abstract:
- lang: eng
text: We propose a neural information processing system obtained by re-purposing
the function of a biological neural circuit model to govern simulated and real-world
control tasks. Inspired by the structure of the nervous system of the soil-worm,
C. elegans, we introduce ordinary neural circuits (ONCs), defined as the model
of biological neural circuits reparameterized for the control of alternative tasks.
We first demonstrate that ONCs realize networks with higher maximum flow compared
to arbitrary wired networks. We then learn instances of ONCs to control a series
of robotic tasks, including the autonomous parking of a real-world rover robot.
For reconfiguration of the purpose of the neural circuit, we adopt a search-based
optimization algorithm. Ordinary neural circuits perform on par and, in some cases,
significantly surpass the performance of contemporary deep learning models. ONC
networks are compact, 77% sparser than their counterpart neural controllers, and
their neural dynamics are fully interpretable at the cell-level.
acknowledgement: "RH and RG are partially supported by Horizon-2020 ECSEL Project
grant No. 783163 (iDev40), Productive 4.0, and ATBMBFW CPS-IoT Ecosystem. ML was
supported in part by the Austrian Science Fund (FWF) under grant Z211-N23\r\n(Wittgenstein
Award). AA is supported by the National Science Foundation (NSF) Graduate Research
Fellowship\r\nProgram. RH and DR are partially supported by The Boeing Company and
JP Morgan Chase. This research work is\r\npartially drawn from the PhD dissertation
of RH.\r\n"
alternative_title:
- PMLR
article_processing_charge: No
author:
- first_name: Ramin
full_name: Hasani, Ramin
last_name: Hasani
- first_name: Mathias
full_name: Lechner, Mathias
id: 3DC22916-F248-11E8-B48F-1D18A9856A87
last_name: Lechner
- first_name: Alexander
full_name: Amini, Alexander
last_name: Amini
- first_name: Daniela
full_name: Rus, Daniela
last_name: Rus
- first_name: Radu
full_name: Grosu, Radu
last_name: Grosu
citation:
ama: 'Hasani R, Lechner M, Amini A, Rus D, Grosu R. A natural lottery ticket winner:
Reinforcement learning with ordinary neural circuits. In: Proceedings of the
37th International Conference on Machine Learning. PMLR. ; 2020:4082-4093.'
apa: 'Hasani, R., Lechner, M., Amini, A., Rus, D., & Grosu, R. (2020). A natural
lottery ticket winner: Reinforcement learning with ordinary neural circuits. In
Proceedings of the 37th International Conference on Machine Learning (pp.
4082–4093). Virtual.'
chicago: 'Hasani, Ramin, Mathias Lechner, Alexander Amini, Daniela Rus, and Radu
Grosu. “A Natural Lottery Ticket Winner: Reinforcement Learning with Ordinary
Neural Circuits.” In Proceedings of the 37th International Conference on Machine
Learning, 4082–93. PMLR, 2020.'
ieee: 'R. Hasani, M. Lechner, A. Amini, D. Rus, and R. Grosu, “A natural lottery
ticket winner: Reinforcement learning with ordinary neural circuits,” in Proceedings
of the 37th International Conference on Machine Learning, Virtual, 2020, pp.
4082–4093.'
ista: 'Hasani R, Lechner M, Amini A, Rus D, Grosu R. 2020. A natural lottery ticket
winner: Reinforcement learning with ordinary neural circuits. Proceedings of the
37th International Conference on Machine Learning. ML: Machine LearningPMLR, PMLR,
, 4082–4093.'
mla: 'Hasani, Ramin, et al. “A Natural Lottery Ticket Winner: Reinforcement Learning
with Ordinary Neural Circuits.” Proceedings of the 37th International Conference
on Machine Learning, 2020, pp. 4082–93.'
short: R. Hasani, M. Lechner, A. Amini, D. Rus, R. Grosu, in:, Proceedings of the
37th International Conference on Machine Learning, 2020, pp. 4082–4093.
conference:
end_date: 2020-07-18
location: Virtual
name: 'ML: Machine Learning'
start_date: 2020-07-12
date_created: 2022-01-25T15:50:34Z
date_published: 2020-01-01T00:00:00Z
date_updated: 2022-01-26T11:14:27Z
ddc:
- '000'
department:
- _id: GradSch
- _id: ToHe
file:
- access_level: open_access
checksum: c9a4a29161777fc1a89ef451c040e3b1
content_type: application/pdf
creator: cchlebak
date_created: 2022-01-26T11:08:51Z
date_updated: 2022-01-26T11:08:51Z
file_id: '10691'
file_name: 2020_PMLR_Hasani.pdf
file_size: 2329798
relation: main_file
success: 1
file_date_updated: 2022-01-26T11:08:51Z
has_accepted_license: '1'
language:
- iso: eng
license: https://creativecommons.org/licenses/by-nc-nd/3.0/
main_file_link:
- open_access: '1'
url: http://proceedings.mlr.press/v119/hasani20a.html
oa: 1
oa_version: Published Version
page: 4082-4093
project:
- _id: 25F42A32-B435-11E9-9278-68D0E5697425
call_identifier: FWF
grant_number: Z211
name: The Wittgenstein Prize
publication: Proceedings of the 37th International Conference on Machine Learning
publication_identifier:
issn:
- 2640-3498
publication_status: published
quality_controlled: '1'
scopus_import: '1'
series_title: PMLR
status: public
title: 'A natural lottery ticket winner: Reinforcement learning with ordinary neural
circuits'
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/3.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported (CC BY-NC-ND
3.0)
short: CC BY-NC-ND (3.0)
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
year: '2020'
...
---
_id: '10693'
abstract:
- lang: eng
text: High quality graphene heterostructures host an array of fractional quantum
Hall isospin ferromagnets with diverse spin and valley orders. While a variety
of phase transitions have been observed, disentangling the isospin phase diagram
of these states is hampered by the absence of direct probes of spin and valley
order. I will describe nonlocal transport measurements based on launching spin
waves from a gate defined lateral heterojunction, performed in ultra-clean Corbino
geometry graphene devices. At high magnetic fields, we find that the spin-wave
transport signal is detected in all FQH states between ν = 0 and 1; however, between
ν = 1 and 2 only odd numerator FQH states show finite nonlocal transport, despite
the identical ground state spin polarizations in odd- and even numerator states.
The results reveal that the neutral spin-waves are both spin and sublattice polarized
making them a sensitive probe of ground state sublattice structure. Armed with
this understanding, we use nonlocal transport signal to a magnetic field tuned
isospin phase transition, showing that the emergent even denominator state at
ν = 1/2 in monolayer graphene is indeed a multicomponent state featuring equal
populations on each sublattice.
alternative_title:
- Bulletin of the American Physical Society
article_number: B54. 00007
article_processing_charge: No
author:
- first_name: Haoxin
full_name: Zhou, Haoxin
last_name: Zhou
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Takashi
full_name: Tanaguchi, Takashi
last_name: Tanaguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. Sublattice resolved spin
wave transport through graphene fractional quantum Hall states as a probe of isospin
order. In: APS March Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Zhou, H., Polshyn, H., Tanaguchi, T., Watanabe, K., & Young, A. (2020).
Sublattice resolved spin wave transport through graphene fractional quantum Hall
states as a probe of isospin order. In APS March Meeting 2020 (Vol. 65).
Denver, CO, United States: American Physical Society.'
chicago: Zhou, Haoxin, Hryhoriy Polshyn, Takashi Tanaguchi, Kenji Watanabe, and
Andrea Young. “Sublattice Resolved Spin Wave Transport through Graphene Fractional
Quantum Hall States as a Probe of Isospin Order.” In APS March Meeting 2020,
Vol. 65. American Physical Society, 2020.
ieee: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, and A. Young, “Sublattice
resolved spin wave transport through graphene fractional quantum Hall states as
a probe of isospin order,” in APS March Meeting 2020, Denver, CO, United
States, 2020, vol. 65, no. 1.
ista: 'Zhou H, Polshyn H, Tanaguchi T, Watanabe K, Young A. 2020. Sublattice resolved
spin wave transport through graphene fractional quantum Hall states as a probe
of isospin order. APS March Meeting 2020. APS: American Physical Society, Bulletin
of the American Physical Society, vol. 65, B54. 00007.'
mla: Zhou, Haoxin, et al. “Sublattice Resolved Spin Wave Transport through Graphene
Fractional Quantum Hall States as a Probe of Isospin Order.” APS March Meeting
2020, vol. 65, no. 1, B54. 00007, American Physical Society, 2020.
short: H. Zhou, H. Polshyn, T. Tanaguchi, K. Watanabe, A. Young, in:, APS March
Meeting 2020, American Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-27T10:50:10Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2022-01-27T10:58:38Z
day: '01'
extern: '1'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B54.7
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_identifier:
issn:
- 0003-0503
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Sublattice resolved spin wave transport through graphene fractional quantum
Hall states as a probe of isospin order
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10698'
abstract:
- lang: eng
text: This is the second of three talks describing the observation and characterization
of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned
to hexagonal boron nitride. I will compare the qualitative and quantitative features
of this observed quantum anomalous Hall state to traditional systems engineered
from thin film (Bi,Sb)2Te3 topological insulators. In particular, we find that
the measured electronic energy gap of ~30K is several times higher than the Curie
temperature, consistent with a lack of disorder associated with magnetic dopants.
In this system, the quantization arises from spontaneous ferromagnetic polarization
into a single spin and valley moiré subband, which is topological despite the
lack of spin orbit coupling. I will also discuss the observation of current induced
switching, which allows the magnetic state of the heterostructure to be controllably
reversed with currents as small as a few nanoamperes.
acknowledgement: I would like to thank the MURI Program, AFOSR, Sloan Foundation,
and the ARO for their generous support of this work.
alternative_title:
- Bulletin of the American Physical Society
article_number: B59.00011
article_processing_charge: No
author:
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Jiacheng
full_name: Zhu, Jiacheng
last_name: Zhu
- first_name: Martin E.
full_name: Huber, Martin E.
last_name: Huber
- first_name: Leon
full_name: Balents, Leon
last_name: Balents
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Tanaguchi, Takashi
last_name: Tanaguchi
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Serlin M, Tschirhart C, Polshyn H, et al. Intrinsic quantized anomalous Hall
effect in a moiré heterostructure, part II: Temperature dependence and current
switching. In: APS March Meeting 2020. Vol 65. American Physical Society;
2020.'
apa: 'Serlin, M., Tschirhart, C., Polshyn, H., Zhang, Y., Zhu, J., Huber, M. E.,
… Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure,
part II: Temperature dependence and current switching. In APS March Meeting
2020 (Vol. 65). Denver, CO, United States: American Physical Society.'
chicago: 'Serlin, Marec, Charles Tschirhart, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng
Zhu, Martin E. Huber, Leon Balents, Kenji Watanabe, Takashi Tanaguchi, and Andrea
Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure,
Part II: Temperature Dependence and Current Switching.” In APS March Meeting
2020, Vol. 65. American Physical Society, 2020.'
ieee: 'M. Serlin et al., “Intrinsic quantized anomalous Hall effect in a
moiré heterostructure, part II: Temperature dependence and current switching,”
in APS March Meeting 2020, Denver, CO, United States, 2020, vol. 65, no.
1.'
ista: 'Serlin M, Tschirhart C, Polshyn H, Zhang Y, Zhu J, Huber ME, Balents L, Watanabe
K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a
moiré heterostructure, part II: Temperature dependence and current switching.
APS March Meeting 2020. APS: American Physical Society, Bulletin of the American
Physical Society, vol. 65, B59.00011.'
mla: 'Serlin, Marec, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré
Heterostructure, Part II: Temperature Dependence and Current Switching.” APS
March Meeting 2020, vol. 65, no. 1, B59.00011, American Physical Society,
2020.'
short: M. Serlin, C. Tschirhart, H. Polshyn, Y. Zhang, J. Zhu, M.E. Huber, L. Balents,
K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American Physical
Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:46:57Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2023-02-21T15:57:52Z
day: '01'
extern: '1'
external_id:
arxiv:
- '1907.00261'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B59.11
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '10619'
relation: other
status: public
status: public
title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part
II: Temperature dependence and current switching'
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10699'
abstract:
- lang: eng
text: This is the third of three talks describing the observation and characterization
of a ferromagnetic moiré heterostructure based on twisted bilayer graphene aligned
to hexagonal boron nitride. In this segment I will present scanning probe magnetometry
data acquired using a nanoSQUID-on-tip microscope, which provides ~150 nm spatial
resolution and a field sensitivity of ~10 nT/rtHz. We study the distribution of
magnetic domains within the device as a function of density, magnetic field training,
and DC current. Our data allow us to constrain the magnitude of the orbital magnetic
moment of the electrons in the QAH state. Comparison with simultaneously acquired
transport data allows us to precisely correlate single domain dynamics with discrete
jumps in the observed anomalous Hall signal.
acknowledgement: I would like to thank the MURI program, Sloan foundation, AFOSR,
and ARO for their generous support of this work. I would also like to thank the
NSF GRFP and the Hertz foundation for their generous support of my graduate studies.
alternative_title:
- Bulletin of the American Physical Society
article_number: B59.00013
article_processing_charge: No
author:
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Jiacheng
full_name: Zhu, Jiacheng
last_name: Zhu
- first_name: Leon
full_name: Balents, Leon
last_name: Balents
- first_name: Martin E.
full_name: Huber, Martin E.
last_name: Huber
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Takashi
full_name: Tanaguchi, Takashi
last_name: Tanaguchi
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Tschirhart C, Serlin M, Polshyn H, et al. Intrinsic quantized anomalous Hall
effect in a moiré heterostructure, part III: Scanning probe magnetometry. In:
APS March Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Tschirhart, C., Serlin, M., Polshyn, H., Zhang, Y., Zhu, J., Balents, L.,
… Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure,
part III: Scanning probe magnetometry. In APS March Meeting 2020 (Vol.
65). Denver, CO, United States: American Physical Society.'
chicago: 'Tschirhart, Charles, Marec Serlin, Hryhoriy Polshyn, Yuxuan Zhang, Jiacheng
Zhu, Leon Balents, Martin E. Huber, Kenji Watanabe, Takashi Tanaguchi, and Andrea
Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure,
Part III: Scanning Probe Magnetometry.” In APS March Meeting 2020, Vol.
65. American Physical Society, 2020.'
ieee: 'C. Tschirhart et al., “Intrinsic quantized anomalous Hall effect in
a moiré heterostructure, part III: Scanning probe magnetometry,” in APS March
Meeting 2020, Denver, CO, United States, 2020, vol. 65, no. 1.'
ista: 'Tschirhart C, Serlin M, Polshyn H, Zhang Y, Zhu J, Balents L, Huber ME, Watanabe
K, Tanaguchi T, Young A. 2020. Intrinsic quantized anomalous Hall effect in a
moiré heterostructure, part III: Scanning probe magnetometry. APS March Meeting
2020. APS: American Physical Society, Bulletin of the American Physical Society,
vol. 65, B59.00013.'
mla: 'Tschirhart, Charles, et al. “Intrinsic Quantized Anomalous Hall Effect in
a Moiré Heterostructure, Part III: Scanning Probe Magnetometry.” APS March
Meeting 2020, vol. 65, no. 1, B59.00013, American Physical Society, 2020.'
short: C. Tschirhart, M. Serlin, H. Polshyn, Y. Zhang, J. Zhu, L. Balents, M.E.
Huber, K. Watanabe, T. Tanaguchi, A. Young, in:, APS March Meeting 2020, American
Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:57:49Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2023-02-21T15:57:52Z
day: '01'
extern: '1'
external_id:
arxiv:
- '1907.00261'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B59.13
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_identifier:
issn:
- 0003-0503
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '10619'
relation: other
status: public
status: public
title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part
III: Scanning probe magnetometry'
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10697'
abstract:
- lang: eng
text: We report the observation of a quantized anomalous Hall effect in a moiré
heterostructure consisting of twisted bilayer graphene aligned to an encapsulating
hBN substrate. The effect occurs at a density of 3 electrons per superlattice
unit cell, where we observe magnetic hysteresis and a Hall resistance quantized
to within 0.1% of the resistance quantum at temperatures as high as 3K. In this
first of 3 talks, I will describe the fabrication procedure for our device as
well as basic transport characterization measurements. I will introduce the phenomenology
of twisted bilayer graphene and present evidence for hBN alignment as manifested
in the hierarchy of symmetry-breaking gaps and anomalous magnetoresistance.
acknowledgement: I would like to thank the MURI program, Sloan foundation, AFOSR,
and ARO for their generous support of this work.
alternative_title:
- Bulletin of the American Physical Society
article_number: B59.00012
article_processing_charge: No
author:
- first_name: Yuxuan
full_name: Zhang, Yuxuan
last_name: Zhang
- first_name: Marec
full_name: Serlin, Marec
last_name: Serlin
- first_name: Charles
full_name: Tschirhart, Charles
last_name: Tschirhart
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Jiacheng
full_name: Zhu, Jiacheng
last_name: Zhu
- first_name: Leon
full_name: Balents, Leon
last_name: Balents
- first_name: Martin E.
full_name: Huber, Martin E.
last_name: Huber
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Zhang Y, Serlin M, Tschirhart C, et al. Intrinsic quantized anomalous Hall
effect in a moiré heterostructure, part I: Device fabrication and transport. In:
APS March Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Zhang, Y., Serlin, M., Tschirhart, C., Polshyn, H., Zhu, J., Balents, L.,
… Young, A. (2020). Intrinsic quantized anomalous Hall effect in a moiré heterostructure,
part I: Device fabrication and transport. In APS March Meeting 2020 (Vol.
65). Denver, CO, United States: American Physical Society.'
chicago: 'Zhang, Yuxuan, Marec Serlin, Charles Tschirhart, Hryhoriy Polshyn, Jiacheng
Zhu, Leon Balents, Martin E. Huber, Takashi Taniguchi, Kenji Watanabe, and Andrea
Young. “Intrinsic Quantized Anomalous Hall Effect in a Moiré Heterostructure,
Part I: Device Fabrication and Transport.” In APS March Meeting 2020, Vol.
65. American Physical Society, 2020.'
ieee: 'Y. Zhang et al., “Intrinsic quantized anomalous Hall effect in a moiré
heterostructure, part I: Device fabrication and transport,” in APS March Meeting
2020, Denver, CO, United States, 2020, vol. 65, no. 1.'
ista: 'Zhang Y, Serlin M, Tschirhart C, Polshyn H, Zhu J, Balents L, Huber ME, Taniguchi
T, Watanabe K, Young A. 2020. Intrinsic quantized anomalous Hall effect in a moiré
heterostructure, part I: Device fabrication and transport. APS March Meeting 2020.
APS: American Physical Society, Bulletin of the American Physical Society, vol.
65, B59.00012.'
mla: 'Zhang, Yuxuan, et al. “Intrinsic Quantized Anomalous Hall Effect in a Moiré
Heterostructure, Part I: Device Fabrication and Transport.” APS March Meeting
2020, vol. 65, no. 1, B59.00012, American Physical Society, 2020.'
short: Y. Zhang, M. Serlin, C. Tschirhart, H. Polshyn, J. Zhu, L. Balents, M.E.
Huber, T. Taniguchi, K. Watanabe, A. Young, in:, APS March Meeting 2020, American
Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:28:35Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2023-02-21T15:57:52Z
day: '01'
extern: '1'
external_id:
arxiv:
- '1907.00261'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B59.12
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
related_material:
record:
- id: '10619'
relation: other
status: public
status: public
title: 'Intrinsic quantized anomalous Hall effect in a moiré heterostructure, part
I: Device fabrication and transport'
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10696'
abstract:
- lang: eng
text: We experimentally investigate twisted van der Waals heterostructures of monolayer
graphene rotated with respect to a bernal stacked graphene bilayer. We report
transport measurements for devices with twist angles between 0.9 and 1.4°. The
electric field allows efficient tuning of the width, isolation and the topology
of the moiré bands in this system. By comparing magnetoresistance measurements
to numerical simulations, we develop an understanding of the band structure. Finally,
we observe correlated states at half- and quarter-fillings, which arise when narrow
moire sublattice band is isolated by energy gaps from dispersive bands. We investigate
the effects of in-plane and out-of-plane magnetic field on these states and discuss
the implication for their spin- and valley- polarization.
alternative_title:
- Bulletin of the American Physical Society
article_number: B51.00005
article_processing_charge: No
author:
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Jihang
full_name: Zhu, Jihang
last_name: Zhu
- first_name: Manish
full_name: Kumar, Manish
last_name: Kumar
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Allan
full_name: MacDonald, Allan
last_name: MacDonald
- first_name: Andrea
full_name: Young, Andrea
last_name: Young
citation:
ama: 'Polshyn H, Zhu J, Kumar M, et al. Correlated states and tunable topological
bands in twisted monolayer-bilayer graphene heterostructures. In: APS March
Meeting 2020. Vol 65. American Physical Society; 2020.'
apa: 'Polshyn, H., Zhu, J., Kumar, M., Taniguchi, T., Watanabe, K., MacDonald, A.,
& Young, A. (2020). Correlated states and tunable topological bands in twisted
monolayer-bilayer graphene heterostructures. In APS March Meeting 2020
(Vol. 65). Denver, CO, United States: American Physical Society.'
chicago: Polshyn, Hryhoriy, Jihang Zhu, Manish Kumar, Takashi Taniguchi, Kenji Watanabe,
Allan MacDonald, and Andrea Young. “Correlated States and Tunable Topological
Bands in Twisted Monolayer-Bilayer Graphene Heterostructures.” In APS March
Meeting 2020, Vol. 65. American Physical Society, 2020.
ieee: H. Polshyn et al., “Correlated states and tunable topological bands
in twisted monolayer-bilayer graphene heterostructures,” in APS March Meeting
2020, Denver, CO, United States, 2020, vol. 65, no. 1.
ista: 'Polshyn H, Zhu J, Kumar M, Taniguchi T, Watanabe K, MacDonald A, Young A.
2020. Correlated states and tunable topological bands in twisted monolayer-bilayer
graphene heterostructures. APS March Meeting 2020. APS: American Physical Society,
Bulletin of the American Physical Society, vol. 65, B51.00005.'
mla: Polshyn, Hryhoriy, et al. “Correlated States and Tunable Topological Bands
in Twisted Monolayer-Bilayer Graphene Heterostructures.” APS March Meeting
2020, vol. 65, no. 1, B51.00005, American Physical Society, 2020.
short: H. Polshyn, J. Zhu, M. Kumar, T. Taniguchi, K. Watanabe, A. MacDonald, A.
Young, in:, APS March Meeting 2020, American Physical Society, 2020.
conference:
end_date: 2020-03-06
location: Denver, CO, United States
name: 'APS: American Physical Society'
start_date: 2020-03-02
date_created: 2022-01-28T10:09:19Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2022-02-08T10:22:08Z
day: '01'
extern: '1'
intvolume: ' 65'
issue: '1'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://meetings.aps.org/Meeting/MAR20/Session/B51.5
month: '03'
oa: 1
oa_version: Published Version
publication: APS March Meeting 2020
publication_identifier:
issn:
- 0003-0503
publication_status: published
publisher: American Physical Society
quality_controlled: '1'
status: public
title: Correlated states and tunable topological bands in twisted monolayer-bilayer
graphene heterostructures
type: conference
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 65
year: '2020'
...
---
_id: '10701'
abstract:
- lang: eng
text: Partially filled Landau levels host competing electronic orders. For example,
electron solids may prevail close to integer filling of the Landau levels before
giving way to fractional quantum Hall liquids at higher carrier density1,2. Here,
we report the observation of an electron solid with non-collinear spin texture
in monolayer graphene, consistent with solidification of skyrmions3—topological
spin textures characterized by quantized electrical charge4,5. We probe the spin
texture of the solids using a modified Corbino geometry that allows ferromagnetic
magnons to be launched and detected6,7. We find that magnon transport is highly
efficient when one Landau level is filled (ν=1), consistent with quantum Hall
ferromagnetic spin polarization. However, even minimal doping immediately quenches
the magnon signal while leaving the vanishing low-temperature charge conductivity
unchanged. Our results can be understood by the formation of a solid of charged
skyrmions near ν=1, whose non-collinear spin texture leads to rapid magnon decay.
Data near fractional fillings show evidence of several fractional skyrmion solids,
suggesting that graphene hosts a highly tunable landscape of coupled spin and
charge orders.
acknowledgement: We acknowledge discussions with B. Halperin, C. Huang, A. Macdonald
and M. Zalatel. Experimental work at UCSB was supported by the Army Research Office
under awards nos. MURI W911NF-16-1-0361 and W911NF-16-1-0482. K.W. and T.T. acknowledge
support from the Elemental Strategy Initiative conducted by MEXT (Japan) and CREST
(JPMJCR15F3), JST. A.F.Y. acknowledges the support of the David and Lucile Packard
Foundation and and Alfred. P. Sloan Foundation.
article_processing_charge: No
article_type: original
author:
- first_name: Haoxin
full_name: Zhou, Haoxin
last_name: Zhou
- first_name: Hryhoriy
full_name: Polshyn, Hryhoriy
id: edfc7cb1-526e-11ec-b05a-e6ecc27e4e48
last_name: Polshyn
orcid: 0000-0001-8223-8896
- first_name: Takashi
full_name: Taniguchi, Takashi
last_name: Taniguchi
- first_name: Kenji
full_name: Watanabe, Kenji
last_name: Watanabe
- first_name: Andrea F.
full_name: Young, Andrea F.
last_name: Young
citation:
ama: Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. Skyrmion solids in monolayer
graphene. Nature Physics. 2020;16(2):154-158. doi:10.1038/s41567-019-0729-8
apa: Zhou, H., Polshyn, H., Taniguchi, T., Watanabe, K., & Young, A. F. (2020).
Skyrmion solids in monolayer graphene. Nature Physics. Springer Nature.
https://doi.org/10.1038/s41567-019-0729-8
chicago: Zhou, Haoxin, Hryhoriy Polshyn, Takashi Taniguchi, Kenji Watanabe, and
Andrea F. Young. “Skyrmion Solids in Monolayer Graphene.” Nature Physics.
Springer Nature, 2020. https://doi.org/10.1038/s41567-019-0729-8.
ieee: H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, and A. F. Young, “Skyrmion
solids in monolayer graphene,” Nature Physics, vol. 16, no. 2. Springer
Nature, pp. 154–158, 2020.
ista: Zhou H, Polshyn H, Taniguchi T, Watanabe K, Young AF. 2020. Skyrmion solids
in monolayer graphene. Nature Physics. 16(2), 154–158.
mla: Zhou, Haoxin, et al. “Skyrmion Solids in Monolayer Graphene.” Nature Physics,
vol. 16, no. 2, Springer Nature, 2020, pp. 154–58, doi:10.1038/s41567-019-0729-8.
short: H. Zhou, H. Polshyn, T. Taniguchi, K. Watanabe, A.F. Young, Nature Physics
16 (2020) 154–158.
date_created: 2022-01-28T12:04:09Z
date_published: 2020-02-01T00:00:00Z
date_updated: 2022-01-31T07:10:07Z
day: '01'
doi: 10.1038/s41567-019-0729-8
extern: '1'
external_id:
arxiv:
- '1904.11485'
intvolume: ' 16'
issue: '2'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1904.11485
month: '02'
oa: 1
oa_version: Preprint
page: 154-158
publication: Nature Physics
publication_identifier:
eissn:
- 1745-2481
issn:
- 1745-2473
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
status: public
title: Skyrmion solids in monolayer graphene
type: journal_article
user_id: 8b945eb4-e2f2-11eb-945a-df72226e66a9
volume: 16
year: '2020'
...
---
_id: '11056'
abstract:
- lang: eng
text: Aging of the circulatory system correlates with the pathogenesis of a large
spectrum of diseases. However, it is largely unknown which factors drive the age-dependent
or pathological decline of the vasculature and how vascular defects relate to
tissue aging. The goal of the study is to design a multianalytical approach to
identify how the cellular microenvironment (i.e., fibroblasts) and serum from
healthy donors of different ages or Alzheimer disease (AD) patients can modulate
the functionality of organ-specific vascular endothelial cells (VECs). Long-living
human microvascular networks embedding VECs and fibroblasts from skin biopsies
are generated. RNA-seq, secretome analyses, and microfluidic assays demonstrate
that fibroblasts from young donors restore the functionality of aged endothelial
cells, an effect also achieved by serum from young donors. New biomarkers of vascular
aging are validated in human biopsies and it is shown that young serum induces
angiopoietin-like-4, which can restore compromised vascular barriers. This strategy
is then employed to characterize transcriptional/functional changes induced on
the blood–brain barrier by AD serum, demonstrating the importance of PTP4A3 in
the regulation of permeability. Features of vascular degeneration during aging
and AD are recapitulated, and a tool to identify novel biomarkers that can be
exploited to develop future therapeutics modulating vascular function is established.
article_number: '2000044'
article_processing_charge: No
article_type: original
author:
- first_name: Simone
full_name: Bersini, Simone
last_name: Bersini
- first_name: Rafael
full_name: Arrojo e Drigo, Rafael
last_name: Arrojo e Drigo
- first_name: Ling
full_name: Huang, Ling
last_name: Huang
- first_name: Maxim N.
full_name: Shokhirev, Maxim N.
last_name: Shokhirev
- first_name: Martin W
full_name: HETZER, Martin W
id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed
last_name: HETZER
orcid: 0000-0002-2111-992X
citation:
ama: Bersini S, Arrojo e Drigo R, Huang L, Shokhirev MN, Hetzer M. Transcriptional
and functional changes of the human microvasculature during physiological aging
and Alzheimer disease. Advanced Biosystems. 2020;4(5). doi:10.1002/adbi.202000044
apa: Bersini, S., Arrojo e Drigo, R., Huang, L., Shokhirev, M. N., & Hetzer,
M. (2020). Transcriptional and functional changes of the human microvasculature
during physiological aging and Alzheimer disease. Advanced Biosystems.
Wiley. https://doi.org/10.1002/adbi.202000044
chicago: Bersini, Simone, Rafael Arrojo e Drigo, Ling Huang, Maxim N. Shokhirev,
and Martin Hetzer. “Transcriptional and Functional Changes of the Human Microvasculature
during Physiological Aging and Alzheimer Disease.” Advanced Biosystems.
Wiley, 2020. https://doi.org/10.1002/adbi.202000044.
ieee: S. Bersini, R. Arrojo e Drigo, L. Huang, M. N. Shokhirev, and M. Hetzer, “Transcriptional
and functional changes of the human microvasculature during physiological aging
and Alzheimer disease,” Advanced Biosystems, vol. 4, no. 5. Wiley, 2020.
ista: Bersini S, Arrojo e Drigo R, Huang L, Shokhirev MN, Hetzer M. 2020. Transcriptional
and functional changes of the human microvasculature during physiological aging
and Alzheimer disease. Advanced Biosystems. 4(5), 2000044.
mla: Bersini, Simone, et al. “Transcriptional and Functional Changes of the Human
Microvasculature during Physiological Aging and Alzheimer Disease.” Advanced
Biosystems, vol. 4, no. 5, 2000044, Wiley, 2020, doi:10.1002/adbi.202000044.
short: S. Bersini, R. Arrojo e Drigo, L. Huang, M.N. Shokhirev, M. Hetzer, Advanced
Biosystems 4 (2020).
date_created: 2022-04-07T07:43:57Z
date_published: 2020-05-01T00:00:00Z
date_updated: 2022-07-18T08:30:48Z
day: '01'
ddc:
- '570'
doi: 10.1002/adbi.202000044
extern: '1'
external_id:
pmid:
- '32402127'
file:
- access_level: open_access
checksum: 5584d9a1609812dc75c02ce1e35d2ec0
content_type: application/pdf
creator: dernst
date_created: 2022-04-08T07:06:05Z
date_updated: 2022-04-08T07:06:05Z
file_id: '11134'
file_name: 2020_AdvancedBiosystems_Bersini.pdf
file_size: 2490829
relation: main_file
success: 1
file_date_updated: 2022-04-08T07:06:05Z
has_accepted_license: '1'
intvolume: ' 4'
issue: '5'
keyword:
- General Biochemistry
- Genetics and Molecular Biology
- Biomedical Engineering
- Biomaterials
language:
- iso: eng
month: '05'
oa: 1
oa_version: Published Version
pmid: 1
publication: Advanced Biosystems
publication_identifier:
issn:
- 2366-7478
- 2366-7478
publication_status: published
publisher: Wiley
quality_controlled: '1'
scopus_import: '1'
status: public
title: Transcriptional and functional changes of the human microvasculature during
physiological aging and Alzheimer disease
tmp:
image: /images/cc_by_nc_nd.png
legal_code_url: https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
name: Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International
(CC BY-NC-ND 4.0)
short: CC BY-NC-ND (4.0)
type: journal_article
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 4
year: '2020'
...
---
_id: '11055'
abstract:
- lang: eng
text: Vascular dysfunctions are a common feature of multiple age-related diseases.
However, modeling healthy and pathological aging of the human vasculature represents
an unresolved experimental challenge. Here, we generated induced vascular endothelial
cells (iVECs) and smooth muscle cells (iSMCs) by direct reprogramming of healthy
human fibroblasts from donors of different ages and Hutchinson-Gilford Progeria
Syndrome (HGPS) patients. iVECs induced from old donors revealed upregulation
of GSTM1 and PALD1, genes linked to oxidative stress, inflammation and endothelial
junction stability, as vascular aging markers. A functional assay performed on
PALD1 KD VECs demonstrated a recovery in vascular permeability. We found that
iSMCs from HGPS donors overexpressed bone morphogenetic protein (BMP)−4, which
plays a key role in both vascular calcification and endothelial barrier damage
observed in HGPS. Strikingly, BMP4 concentrations are higher in serum from HGPS
vs. age-matched mice. Furthermore, targeting BMP4 with blocking antibody recovered
the functionality of the vascular barrier in vitro, hence representing a potential
future therapeutic strategy to limit cardiovascular dysfunction in HGPS. These
results show that iVECs and iSMCs retain disease-related signatures, allowing
modeling of vascular aging and HGPS in vitro.
article_number: e54383
article_processing_charge: No
article_type: original
author:
- first_name: Simone
full_name: Bersini, Simone
last_name: Bersini
- first_name: Roberta
full_name: Schulte, Roberta
last_name: Schulte
- first_name: Ling
full_name: Huang, Ling
last_name: Huang
- first_name: Hannah
full_name: Tsai, Hannah
last_name: Tsai
- first_name: Martin W
full_name: HETZER, Martin W
id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed
last_name: HETZER
orcid: 0000-0002-2111-992X
citation:
ama: Bersini S, Schulte R, Huang L, Tsai H, Hetzer M. Direct reprogramming of human
smooth muscle and vascular endothelial cells reveals defects associated with aging
and Hutchinson-Gilford progeria syndrome. eLife. 2020;9. doi:10.7554/elife.54383
apa: Bersini, S., Schulte, R., Huang, L., Tsai, H., & Hetzer, M. (2020). Direct
reprogramming of human smooth muscle and vascular endothelial cells reveals defects
associated with aging and Hutchinson-Gilford progeria syndrome. ELife.
eLife Sciences Publications. https://doi.org/10.7554/elife.54383
chicago: Bersini, Simone, Roberta Schulte, Ling Huang, Hannah Tsai, and Martin Hetzer.
“Direct Reprogramming of Human Smooth Muscle and Vascular Endothelial Cells Reveals
Defects Associated with Aging and Hutchinson-Gilford Progeria Syndrome.” ELife.
eLife Sciences Publications, 2020. https://doi.org/10.7554/elife.54383.
ieee: S. Bersini, R. Schulte, L. Huang, H. Tsai, and M. Hetzer, “Direct reprogramming
of human smooth muscle and vascular endothelial cells reveals defects associated
with aging and Hutchinson-Gilford progeria syndrome,” eLife, vol. 9. eLife
Sciences Publications, 2020.
ista: Bersini S, Schulte R, Huang L, Tsai H, Hetzer M. 2020. Direct reprogramming
of human smooth muscle and vascular endothelial cells reveals defects associated
with aging and Hutchinson-Gilford progeria syndrome. eLife. 9, e54383.
mla: Bersini, Simone, et al. “Direct Reprogramming of Human Smooth Muscle and Vascular
Endothelial Cells Reveals Defects Associated with Aging and Hutchinson-Gilford
Progeria Syndrome.” ELife, vol. 9, e54383, eLife Sciences Publications,
2020, doi:10.7554/elife.54383.
short: S. Bersini, R. Schulte, L. Huang, H. Tsai, M. Hetzer, ELife 9 (2020).
date_created: 2022-04-07T07:43:48Z
date_published: 2020-09-08T00:00:00Z
date_updated: 2022-07-18T08:30:37Z
day: '08'
ddc:
- '570'
doi: 10.7554/elife.54383
extern: '1'
external_id:
pmid:
- '32896271'
file:
- access_level: open_access
checksum: f8b3821349a194050be02570d8fe7d4b
content_type: application/pdf
creator: dernst
date_created: 2022-04-08T06:53:10Z
date_updated: 2022-04-08T06:53:10Z
file_id: '11132'
file_name: 2020_eLife_Bersini.pdf
file_size: 4399825
relation: main_file
success: 1
file_date_updated: 2022-04-08T06:53:10Z
has_accepted_license: '1'
intvolume: ' 9'
keyword:
- General Immunology and Microbiology
- General Biochemistry
- Genetics and Molecular Biology
- General Medicine
- General Neuroscience
language:
- iso: eng
month: '09'
oa: 1
oa_version: Published Version
pmid: 1
publication: eLife
publication_identifier:
issn:
- 2050-084X
publication_status: published
publisher: eLife Sciences Publications
quality_controlled: '1'
scopus_import: '1'
status: public
title: Direct reprogramming of human smooth muscle and vascular endothelial cells
reveals defects associated with aging and Hutchinson-Gilford progeria syndrome
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 9
year: '2020'
...
---
_id: '11054'
abstract:
- lang: eng
text: In recent years, the nuclear pore complex (NPC) has emerged as a key player
in genome regulation and cellular homeostasis. New discoveries have revealed that
the NPC has multiple cellular functions besides mediating the molecular exchange
between the nucleus and the cytoplasm. In this review, we discuss non-transport
aspects of the NPC focusing on the NPC-genome interaction, the extreme longevity
of the NPC proteins, and NPC dysfunction in age-related diseases. The examples
summarized herein demonstrate that the NPC, which first evolved to enable the
biochemical communication between the nucleus and the cytoplasm, now doubles as
the gatekeeper of cellular identity and aging.
article_processing_charge: No
article_type: review
author:
- first_name: Ukrae H.
full_name: Cho, Ukrae H.
last_name: Cho
- first_name: Martin W
full_name: HETZER, Martin W
id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed
last_name: HETZER
orcid: 0000-0002-2111-992X
citation:
ama: 'Cho UH, Hetzer M. Nuclear periphery takes center stage: The role of nuclear
pore complexes in cell identity and aging. Neuron. 2020;106(6):899-911.
doi:10.1016/j.neuron.2020.05.031'
apa: 'Cho, U. H., & Hetzer, M. (2020). Nuclear periphery takes center stage:
The role of nuclear pore complexes in cell identity and aging. Neuron.
Elsevier. https://doi.org/10.1016/j.neuron.2020.05.031'
chicago: 'Cho, Ukrae H., and Martin Hetzer. “Nuclear Periphery Takes Center Stage:
The Role of Nuclear Pore Complexes in Cell Identity and Aging.” Neuron.
Elsevier, 2020. https://doi.org/10.1016/j.neuron.2020.05.031.'
ieee: 'U. H. Cho and M. Hetzer, “Nuclear periphery takes center stage: The role
of nuclear pore complexes in cell identity and aging,” Neuron, vol. 106,
no. 6. Elsevier, pp. 899–911, 2020.'
ista: 'Cho UH, Hetzer M. 2020. Nuclear periphery takes center stage: The role of
nuclear pore complexes in cell identity and aging. Neuron. 106(6), 899–911.'
mla: 'Cho, Ukrae H., and Martin Hetzer. “Nuclear Periphery Takes Center Stage: The
Role of Nuclear Pore Complexes in Cell Identity and Aging.” Neuron, vol.
106, no. 6, Elsevier, 2020, pp. 899–911, doi:10.1016/j.neuron.2020.05.031.'
short: U.H. Cho, M. Hetzer, Neuron 106 (2020) 899–911.
date_created: 2022-04-07T07:43:36Z
date_published: 2020-06-17T00:00:00Z
date_updated: 2022-07-18T08:29:35Z
day: '17'
doi: 10.1016/j.neuron.2020.05.031
extern: '1'
external_id:
pmid:
- '32553207'
intvolume: ' 106'
issue: '6'
keyword:
- General Neuroscience
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1016/j.neuron.2020.05.031
month: '06'
oa: 1
oa_version: Published Version
page: 899-911
pmid: 1
publication: Neuron
publication_identifier:
issn:
- 0896-6273
publication_status: published
publisher: Elsevier
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Nuclear periphery takes center stage: The role of nuclear pore complexes in
cell identity and aging'
type: journal_article
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 106
year: '2020'
...
---
_id: '11057'
abstract:
- lang: eng
text: During mitosis, transcription of genomic DNA is dramatically reduced, before
it is reactivated during nuclear reformation in anaphase/telophase. Many aspects
of the underlying principles that mediate transcriptional memory and reactivation
in the daughter cells remain unclear. Here, we used ChIP-seq on synchronized cells
at different stages after mitosis to generate genome-wide maps of histone modifications.
Combined with EU-RNA-seq and Hi-C analyses, we found that during prometaphase,
promoters, enhancers, and insulators retain H3K4me3 and H3K4me1, while losing
H3K27ac. Enhancers globally retaining mitotic H3K4me1 or locally retaining mitotic
H3K27ac are associated with cell type-specific genes and their transcription factors
for rapid transcriptional activation. As cells exit mitosis, promoters regain
H3K27ac, which correlates with transcriptional reactivation. Insulators also gain
H3K27ac and CCCTC-binding factor (CTCF) in anaphase/telophase. This increase of
H3K27ac in anaphase/telophase is required for posttranscriptional activation and
may play a role in the establishment of topologically associating domains (TADs).
Together, our results suggest that the genome is reorganized in a sequential order,
in which histone methylations occur first in prometaphase, histone acetylation,
and CTCF in anaphase/telophase, transcription in cytokinesis, and long-range chromatin
interactions in early G1. We thus provide insights into the histone modification
landscape that allows faithful reestablishment of the transcriptional program
and TADs during cell division.
article_processing_charge: No
article_type: original
author:
- first_name: Hyeseon
full_name: Kang, Hyeseon
last_name: Kang
- first_name: Maxim N.
full_name: Shokhirev, Maxim N.
last_name: Shokhirev
- first_name: Zhichao
full_name: Xu, Zhichao
last_name: Xu
- first_name: Sahaana
full_name: Chandran, Sahaana
last_name: Chandran
- first_name: Jesse R.
full_name: Dixon, Jesse R.
last_name: Dixon
- first_name: Martin W
full_name: HETZER, Martin W
id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed
last_name: HETZER
orcid: 0000-0002-2111-992X
citation:
ama: Kang H, Shokhirev MN, Xu Z, Chandran S, Dixon JR, Hetzer M. Dynamic regulation
of histone modifications and long-range chromosomal interactions during postmitotic
transcriptional reactivation. Genes & Development. 2020;34(13-14):913-930.
doi:10.1101/gad.335794.119
apa: Kang, H., Shokhirev, M. N., Xu, Z., Chandran, S., Dixon, J. R., & Hetzer,
M. (2020). Dynamic regulation of histone modifications and long-range chromosomal
interactions during postmitotic transcriptional reactivation. Genes & Development.
Cold Spring Harbor Laboratory Press. https://doi.org/10.1101/gad.335794.119
chicago: Kang, Hyeseon, Maxim N. Shokhirev, Zhichao Xu, Sahaana Chandran, Jesse
R. Dixon, and Martin Hetzer. “Dynamic Regulation of Histone Modifications and
Long-Range Chromosomal Interactions during Postmitotic Transcriptional Reactivation.”
Genes & Development. Cold Spring Harbor Laboratory Press, 2020. https://doi.org/10.1101/gad.335794.119.
ieee: H. Kang, M. N. Shokhirev, Z. Xu, S. Chandran, J. R. Dixon, and M. Hetzer,
“Dynamic regulation of histone modifications and long-range chromosomal interactions
during postmitotic transcriptional reactivation,” Genes & Development,
vol. 34, no. 13–14. Cold Spring Harbor Laboratory Press, pp. 913–930, 2020.
ista: Kang H, Shokhirev MN, Xu Z, Chandran S, Dixon JR, Hetzer M. 2020. Dynamic
regulation of histone modifications and long-range chromosomal interactions during
postmitotic transcriptional reactivation. Genes & Development. 34(13–14),
913–930.
mla: Kang, Hyeseon, et al. “Dynamic Regulation of Histone Modifications and Long-Range
Chromosomal Interactions during Postmitotic Transcriptional Reactivation.” Genes
& Development, vol. 34, no. 13–14, Cold Spring Harbor Laboratory Press,
2020, pp. 913–30, doi:10.1101/gad.335794.119.
short: H. Kang, M.N. Shokhirev, Z. Xu, S. Chandran, J.R. Dixon, M. Hetzer, Genes
& Development 34 (2020) 913–930.
date_created: 2022-04-07T07:44:09Z
date_published: 2020-04-28T00:00:00Z
date_updated: 2022-07-18T08:31:08Z
day: '28'
ddc:
- '570'
doi: 10.1101/gad.335794.119
extern: '1'
external_id:
pmid:
- '32499403'
file:
- access_level: open_access
checksum: 84e92d40e67936c739628315c238daf9
content_type: application/pdf
creator: dernst
date_created: 2022-04-08T07:12:33Z
date_updated: 2022-04-08T07:12:33Z
file_id: '11136'
file_name: 2020_GenesDevelopment_Kang.pdf
file_size: 4406772
relation: main_file
success: 1
file_date_updated: 2022-04-08T07:12:33Z
has_accepted_license: '1'
intvolume: ' 34'
issue: 13-14
keyword:
- Developmental Biology
- Genetics
language:
- iso: eng
month: '04'
oa: 1
oa_version: Published Version
page: 913-930
pmid: 1
publication: Genes & Development
publication_identifier:
issn:
- 0890-9369
- 1549-5477
publication_status: published
publisher: Cold Spring Harbor Laboratory Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic regulation of histone modifications and long-range chromosomal interactions
during postmitotic transcriptional reactivation
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 34
year: '2020'
...
---
_id: '11058'
abstract:
- lang: eng
text: Nucleoporin 93 (Nup93) expression inversely correlates with the survival of
triple-negative breast cancer patients. However, our knowledge of Nup93 function
in breast cancer besides its role as structural component of the nuclear pore
complex is not understood. Combination of functional assays and genetic analyses
suggested that chromatin interaction of Nup93 partially modulates the expression
of genes associated with actin cytoskeleton remodeling and epithelial to mesenchymal
transition, resulting in impaired invasion of triple-negative, claudin-low breast
cancer cells. Nup93 depletion induced stress fiber formation associated with reduced
cell migration/proliferation and impaired expression of mesenchymal-like genes.
Silencing LIMCH1, a gene responsible for actin cytoskeleton remodeling and up-regulated
upon Nup93 depletion, partially restored the invasive phenotype of cancer cells.
Loss of Nup93 led to significant defects in tumor establishment/propagation in
vivo, whereas patient samples revealed that high Nup93 and low LIMCH1 expression
correlate with late tumor stage. Our approach identified Nup93 as contributor
of triple-negative, claudin-low breast cancer cell invasion and paves the way
to study the role of nuclear envelope proteins during breast cancer tumorigenesis.
article_number: e201900623
article_processing_charge: No
article_type: original
author:
- first_name: Simone
full_name: Bersini, Simone
last_name: Bersini
- first_name: Nikki K
full_name: Lytle, Nikki K
last_name: Lytle
- first_name: Roberta
full_name: Schulte, Roberta
last_name: Schulte
- first_name: Ling
full_name: Huang, Ling
last_name: Huang
- first_name: Geoffrey M
full_name: Wahl, Geoffrey M
last_name: Wahl
- first_name: Martin W
full_name: HETZER, Martin W
id: 86c0d31b-b4eb-11ec-ac5a-eae7b2e135ed
last_name: HETZER
orcid: 0000-0002-2111-992X
citation:
ama: Bersini S, Lytle NK, Schulte R, Huang L, Wahl GM, Hetzer M. Nup93 regulates
breast tumor growth by modulating cell proliferation and actin cytoskeleton remodeling.
Life Science Alliance. 2020;3(1). doi:10.26508/lsa.201900623
apa: Bersini, S., Lytle, N. K., Schulte, R., Huang, L., Wahl, G. M., & Hetzer,
M. (2020). Nup93 regulates breast tumor growth by modulating cell proliferation
and actin cytoskeleton remodeling. Life Science Alliance. Life Science
Alliance. https://doi.org/10.26508/lsa.201900623
chicago: Bersini, Simone, Nikki K Lytle, Roberta Schulte, Ling Huang, Geoffrey M
Wahl, and Martin Hetzer. “Nup93 Regulates Breast Tumor Growth by Modulating Cell
Proliferation and Actin Cytoskeleton Remodeling.” Life Science Alliance.
Life Science Alliance, 2020. https://doi.org/10.26508/lsa.201900623.
ieee: S. Bersini, N. K. Lytle, R. Schulte, L. Huang, G. M. Wahl, and M. Hetzer,
“Nup93 regulates breast tumor growth by modulating cell proliferation and actin
cytoskeleton remodeling,” Life Science Alliance, vol. 3, no. 1. Life Science
Alliance, 2020.
ista: Bersini S, Lytle NK, Schulte R, Huang L, Wahl GM, Hetzer M. 2020. Nup93 regulates
breast tumor growth by modulating cell proliferation and actin cytoskeleton remodeling.
Life Science Alliance. 3(1), e201900623.
mla: Bersini, Simone, et al. “Nup93 Regulates Breast Tumor Growth by Modulating
Cell Proliferation and Actin Cytoskeleton Remodeling.” Life Science Alliance,
vol. 3, no. 1, e201900623, Life Science Alliance, 2020, doi:10.26508/lsa.201900623.
short: S. Bersini, N.K. Lytle, R. Schulte, L. Huang, G.M. Wahl, M. Hetzer, Life
Science Alliance 3 (2020).
date_created: 2022-04-07T07:44:18Z
date_published: 2020-01-01T00:00:00Z
date_updated: 2022-07-18T08:31:20Z
day: '01'
ddc:
- '570'
doi: 10.26508/lsa.201900623
extern: '1'
external_id:
pmid:
- '31959624'
file:
- access_level: open_access
checksum: 3bf33e7e93bef7823287807206b69b38
content_type: application/pdf
creator: dernst
date_created: 2022-04-08T07:33:01Z
date_updated: 2022-04-08T07:33:01Z
file_id: '11137'
file_name: 2020_LifeScienceAlliance_Bersini.pdf
file_size: 2653960
relation: main_file
success: 1
file_date_updated: 2022-04-08T07:33:01Z
has_accepted_license: '1'
intvolume: ' 3'
issue: '1'
keyword:
- Health
- Toxicology and Mutagenesis
- Plant Science
- Biochemistry
- Genetics and Molecular Biology (miscellaneous)
- Ecology
language:
- iso: eng
month: '01'
oa: 1
oa_version: Published Version
pmid: 1
publication: Life Science Alliance
publication_identifier:
issn:
- 2575-1077
publication_status: published
publisher: Life Science Alliance
quality_controlled: '1'
scopus_import: '1'
status: public
title: Nup93 regulates breast tumor growth by modulating cell proliferation and actin
cytoskeleton remodeling
tmp:
image: /images/cc_by.png
legal_code_url: https://creativecommons.org/licenses/by/4.0/legalcode
name: Creative Commons Attribution 4.0 International Public License (CC-BY 4.0)
short: CC BY (4.0)
type: journal_article
user_id: 72615eeb-f1f3-11ec-aa25-d4573ddc34fd
volume: 3
year: '2020'
...
---
_id: '11503'
abstract:
- lang: eng
text: "Context. The Lyα emitter (LAE) fraction, XLAE, is a potentially powerful
probe of the evolution of the intergalactic neutral hydrogen gas fraction. However,
uncertainties in the measurement of XLAE are still under debate.\r\nAims. Thanks
to deep data obtained with the integral field spectrograph Multi Unit Spectroscopic
Explorer (MUSE), we can measure the evolution of the LAE fraction homogeneously
over a wide redshift range of z ≈ 3–6 for UV-faint galaxies (down to UV magnitudes
of M1500 ≈ −17.75). This is a significantly fainter range than in former studies
(M1500 ≤ −18.75) and it allows us to probe the bulk of the population of high-redshift
star-forming galaxies.\r\nMethods. We constructed a UV-complete photometric-redshift
sample following UV luminosity functions and measured the Lyα emission with MUSE
using the latest (second) data release from the MUSE Hubble Ultra Deep Field Survey.\r\nResults.
We derived the redshift evolution of XLAE for M1500 ∈ [ − 21.75; −17.75] for the
first time with a equivalent width range EW(Lyα) ≥ 65 Å and found low values of
XLAE ≲ 30% at z ≲ 6. The best-fit linear relation is XLAE = 0.07+0.06−0.03z −
0.22+0.12−0.24. For M1500 ∈ [ − 20.25; −18.75] and EW(Lyα) ≥ 25 Å, our XLAE values
are consistent with those in the literature within 1σ at z ≲ 5, but our median
values are systematically lower than reported values over the whole redshift range.
In addition, we do not find a significant dependence of XLAE on M1500 for EW(Lyα)
≥ 50 Å at z ≈ 3–4, in contrast with previous work. The differences in XLAE mainly
arise from selection biases for Lyman Break Galaxies (LBGs) in the literature:
UV-faint LBGs are more easily selected if they have strong Lyα emission, hence
XLAE is biased towards higher values when those samples are used.\r\nConclusions.
Our results suggest either a lower increase of XLAE towards z ≈ 6 than previously
suggested, or even a turnover of XLAE at z ≈ 5.5, which may be the signature of
a late or patchy reionization process. We compared our results with predictions
from a cosmological galaxy evolution model. We find that a model with a bursty
star formation (SF) can reproduce our observed LAE fractions much better than
models where SF is a smooth function of time."
acknowledgement: We thank the anonymous referee for constructive comments and suggestions.
We would like to express our gratitude to Stephane De Barros and Pablo Arrabal Haro
for kindly providing their data plotted in Figs. 1, 2, and 8. We are grateful to
Kazuhiro Shimasaku, Masami Ouchi, Rieko Momose, Daniel Schaerer, Hidenobu Yajima,
Taku Okamura, Makoto Ando, and Hinako Goto for giving insightful comments and suggestions.
This work is based on observations taken by VLT, which is operated by European Southern
Observatory. This research made use of Astropy (http://www.astropy.org), which is
a community-developed core Python package for Astronomy (Astropy Collaboration 2013,
2018), MARZ, MPDAF, and matplotlib (Hunter 2007). H.K. acknowledges support from
Japan Society for the Promotion of Science (JSPS) through the JSPS Research Fellowship
for Young Scientists and Overseas Challenge Program for Young Researchers. AV acknowledges
support from the ERC starting grant 757258-TRIPLE and the SNF Professorship 176808-TRIPLE.
This work was supported by the project FOGHAR (Agence Nationale de la Recherche,
ANR-13-BS05-0010-02). JB acknowledges support from the ORAGE project from the Agence
Nationale de la Recherche under grant ANR-14-CE33-0016-03. JR acknowledges support
from the ERC starting grant 336736-CALENDS. T. H. acknowledges supports by the Grant-inAid
for Scientic Research 19J01620.
article_number: A12
article_processing_charge: No
article_type: original
author:
- first_name: Haruka
full_name: Kusakabe, Haruka
last_name: Kusakabe
- first_name: Jérémy
full_name: Blaizot, Jérémy
last_name: Blaizot
- first_name: Thibault
full_name: Garel, Thibault
last_name: Garel
- first_name: Anne
full_name: Verhamme, Anne
last_name: Verhamme
- first_name: Roland
full_name: Bacon, Roland
last_name: Bacon
- first_name: Johan
full_name: Richard, Johan
last_name: Richard
- first_name: Takuya
full_name: Hashimoto, Takuya
last_name: Hashimoto
- first_name: Hanae
full_name: Inami, Hanae
last_name: Inami
- first_name: Simon
full_name: Conseil, Simon
last_name: Conseil
- first_name: Bruno
full_name: Guiderdoni, Bruno
last_name: Guiderdoni
- first_name: Alyssa B.
full_name: Drake, Alyssa B.
last_name: Drake
- first_name: Edmund
full_name: Christian Herenz, Edmund
last_name: Christian Herenz
- first_name: Joop
full_name: Schaye, Joop
last_name: Schaye
- first_name: Pascal
full_name: Oesch, Pascal
last_name: Oesch
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Raffaella
full_name: Anna Marino, Raffaella
last_name: Anna Marino
- first_name: Kasper
full_name: Borello Schmidt, Kasper
last_name: Borello Schmidt
- first_name: Roser
full_name: Pelló, Roser
last_name: Pelló
- first_name: Michael
full_name: Maseda, Michael
last_name: Maseda
- first_name: Floriane
full_name: Leclercq, Floriane
last_name: Leclercq
- first_name: Josephine
full_name: Kerutt, Josephine
last_name: Kerutt
- first_name: Guillaume
full_name: Mahler, Guillaume
last_name: Mahler
citation:
ama: 'Kusakabe H, Blaizot J, Garel T, et al. The MUSE Hubble Ultra Deep Field Survey:
XIV. Evolution of the Lyα emitter fraction from z = 3 to z = 6. Astronomy &
Astrophysics. 2020;638. doi:10.1051/0004-6361/201937340'
apa: 'Kusakabe, H., Blaizot, J., Garel, T., Verhamme, A., Bacon, R., Richard, J.,
… Mahler, G. (2020). The MUSE Hubble Ultra Deep Field Survey: XIV. Evolution of
the Lyα emitter fraction from z = 3 to z = 6. Astronomy & Astrophysics.
EDP Sciences. https://doi.org/10.1051/0004-6361/201937340'
chicago: 'Kusakabe, Haruka, Jérémy Blaizot, Thibault Garel, Anne Verhamme, Roland
Bacon, Johan Richard, Takuya Hashimoto, et al. “The MUSE Hubble Ultra Deep Field
Survey: XIV. Evolution of the Lyα Emitter Fraction from z = 3 to z = 6.” Astronomy
& Astrophysics. EDP Sciences, 2020. https://doi.org/10.1051/0004-6361/201937340.'
ieee: 'H. Kusakabe et al., “The MUSE Hubble Ultra Deep Field Survey: XIV.
Evolution of the Lyα emitter fraction from z = 3 to z = 6,” Astronomy &
Astrophysics, vol. 638. EDP Sciences, 2020.'
ista: 'Kusakabe H, Blaizot J, Garel T, Verhamme A, Bacon R, Richard J, Hashimoto
T, Inami H, Conseil S, Guiderdoni B, Drake AB, Christian Herenz E, Schaye J, Oesch
P, Matthee JJ, Anna Marino R, Borello Schmidt K, Pelló R, Maseda M, Leclercq F,
Kerutt J, Mahler G. 2020. The MUSE Hubble Ultra Deep Field Survey: XIV. Evolution
of the Lyα emitter fraction from z = 3 to z = 6. Astronomy & Astrophysics.
638, A12.'
mla: 'Kusakabe, Haruka, et al. “The MUSE Hubble Ultra Deep Field Survey: XIV. Evolution
of the Lyα Emitter Fraction from z = 3 to z = 6.” Astronomy & Astrophysics,
vol. 638, A12, EDP Sciences, 2020, doi:10.1051/0004-6361/201937340.'
short: H. Kusakabe, J. Blaizot, T. Garel, A. Verhamme, R. Bacon, J. Richard, T.
Hashimoto, H. Inami, S. Conseil, B. Guiderdoni, A.B. Drake, E. Christian Herenz,
J. Schaye, P. Oesch, J.J. Matthee, R. Anna Marino, K. Borello Schmidt, R. Pelló,
M. Maseda, F. Leclercq, J. Kerutt, G. Mahler, Astronomy & Astrophysics 638
(2020).
date_created: 2022-07-06T09:50:48Z
date_published: 2020-06-03T00:00:00Z
date_updated: 2022-07-19T09:35:20Z
day: '03'
doi: 10.1051/0004-6361/201937340
extern: '1'
external_id:
arxiv:
- '2003.12083'
intvolume: ' 638'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'dark ages / reionization / first stars / early Universe / cosmology: observations
/ galaxies: evolution / galaxies: high-redshift / intergalactic medium'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2003.12083
month: '06'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The MUSE Hubble Ultra Deep Field Survey: XIV. Evolution of the Lyα emitter
fraction from z = 3 to z = 6'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 638
year: '2020'
...
---
_id: '11504'
abstract:
- lang: eng
text: We present spatially resolved maps of six individually-detected Lyman α haloes
(LAHs) as well as a first statistical analysis of the Lyman α (Lyα) spectral signature
in the circum-galactic medium of high-redshift star-forming galaxies (−17.5 >
MUV > −21.5) using the Multi-Unit Spectroscopic Explorer. Our resolved spectroscopic
analysis of the LAHs reveals significant intrahalo variations of the Lyα line
profile. Using a three-dimensional two-component model for the Lyα emission, we
measured the full width at half maximum (FWHM), the peak velocity shift, and the
asymmetry of the Lyα line in the core and in the halo of 19 galaxies. We find
that the Lyα line shape is statistically different in the halo compared to the
core (in terms of width, peak wavelength, and asymmetry) for ≈40% of our galaxies.
Similarly to object-by-object based studies and a recent resolved study using
lensing, we find a correlation between the peak velocity shift and the width of
the Lyα line both at the interstellar and circum-galactic scales. This trend has
been predicted by radiative transfer simulations of galactic winds as a result
of resonant scattering in outflows. While there is a lack of correlation between
the spectral properties and the spatial scale lengths of our LAHs, we find a correlation
between the width of the line in the LAH and the halo flux fraction. Interestingly,
UV bright galaxies (MUV < −20) show broader, more redshifted, and less asymmetric
Lyα lines in their haloes. The most significant correlation found is for the FWHM
of the line and the UV continuum slope of the galaxy, suggesting that the redder
galaxies have broader Lyα lines. The generally broad and red line shapes found
in the halo component suggest that the Lyα haloes are powered either by scattering
processes through an outflowing medium, fluorescent emission from outflowing cold
clumps of gas, or a mix of both. Considering the large diversity of the Lyα line
profiles observed in our sample and the lack of strong correlation, the interpretation
of our results is still broadly open and underlines the need for realistic spatially
resolved models of the LAHs.
acknowledgement: F.L., R.B., and S.C. acknowledge support from the ERC advanced grant
339659-MUSICOS. F.L., T.G., H.K., and A.V. acknowledge support from the ERC starting
grant ERC-757258-TRIPLE. A.C. and J.R. acknowledge support from the ERC starting
grant 336736-CALENDS. J.B. acknowledges support by FCT/MCTES through national funds
(PID-DAC) by grant UID/FIS/04434/2019 and through Investigador FCT Contract No.IF/01654/2014/CP1215/CT0003.
T.H. was supported by Leading Initiative for Excellent Young Researchers, MEXT,
Japan.
article_number: A82
article_processing_charge: No
article_type: original
author:
- first_name: Floriane
full_name: Leclercq, Floriane
last_name: Leclercq
- first_name: Roland
full_name: Bacon, Roland
last_name: Bacon
- first_name: Anne
full_name: Verhamme, Anne
last_name: Verhamme
- first_name: Thibault
full_name: Garel, Thibault
last_name: Garel
- first_name: Jérémy
full_name: Blaizot, Jérémy
last_name: Blaizot
- first_name: Jarle
full_name: Brinchmann, Jarle
last_name: Brinchmann
- first_name: Sebastiano
full_name: Cantalupo, Sebastiano
last_name: Cantalupo
- first_name: Adélaïde
full_name: Claeyssens, Adélaïde
last_name: Claeyssens
- first_name: Simon
full_name: Conseil, Simon
last_name: Conseil
- first_name: Thierry
full_name: Contini, Thierry
last_name: Contini
- first_name: Takuya
full_name: Hashimoto, Takuya
last_name: Hashimoto
- first_name: Edmund Christian
full_name: Herenz, Edmund Christian
last_name: Herenz
- first_name: Haruka
full_name: Kusakabe, Haruka
last_name: Kusakabe
- first_name: Raffaella Anna
full_name: Marino, Raffaella Anna
last_name: Marino
- first_name: Michael
full_name: Maseda, Michael
last_name: Maseda
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Peter
full_name: Mitchell, Peter
last_name: Mitchell
- first_name: Gabriele
full_name: Pezzulli, Gabriele
last_name: Pezzulli
- first_name: Johan
full_name: Richard, Johan
last_name: Richard
- first_name: Kasper Borello
full_name: Schmidt, Kasper Borello
last_name: Schmidt
- first_name: Lutz
full_name: Wisotzki, Lutz
last_name: Wisotzki
citation:
ama: 'Leclercq F, Bacon R, Verhamme A, et al. The MUSE Hubble Ultra Deep field survey:
XIII. Spatially resolved spectral properties of Lyman α haloes around star-forming
galaxies at z > 3. Astronomy & Astrophysics. 2020;635. doi:10.1051/0004-6361/201937339'
apa: 'Leclercq, F., Bacon, R., Verhamme, A., Garel, T., Blaizot, J., Brinchmann,
J., … Wisotzki, L. (2020). The MUSE Hubble Ultra Deep field survey: XIII. Spatially
resolved spectral properties of Lyman α haloes around star-forming galaxies at
z > 3. Astronomy & Astrophysics. EDP Sciences. https://doi.org/10.1051/0004-6361/201937339'
chicago: 'Leclercq, Floriane, Roland Bacon, Anne Verhamme, Thibault Garel, Jérémy
Blaizot, Jarle Brinchmann, Sebastiano Cantalupo, et al. “The MUSE Hubble Ultra
Deep Field Survey: XIII. Spatially Resolved Spectral Properties of Lyman α Haloes
around Star-Forming Galaxies at z > 3.” Astronomy & Astrophysics.
EDP Sciences, 2020. https://doi.org/10.1051/0004-6361/201937339.'
ieee: 'F. Leclercq et al., “The MUSE Hubble Ultra Deep field survey: XIII.
Spatially resolved spectral properties of Lyman α haloes around star-forming galaxies
at z > 3,” Astronomy & Astrophysics, vol. 635. EDP Sciences, 2020.'
ista: 'Leclercq F, Bacon R, Verhamme A, Garel T, Blaizot J, Brinchmann J, Cantalupo
S, Claeyssens A, Conseil S, Contini T, Hashimoto T, Herenz EC, Kusakabe H, Marino
RA, Maseda M, Matthee JJ, Mitchell P, Pezzulli G, Richard J, Schmidt KB, Wisotzki
L. 2020. The MUSE Hubble Ultra Deep field survey: XIII. Spatially resolved spectral
properties of Lyman α haloes around star-forming galaxies at z > 3. Astronomy
& Astrophysics. 635, A82.'
mla: 'Leclercq, Floriane, et al. “The MUSE Hubble Ultra Deep Field Survey: XIII.
Spatially Resolved Spectral Properties of Lyman α Haloes around Star-Forming Galaxies
at z > 3.” Astronomy & Astrophysics, vol. 635, A82, EDP Sciences,
2020, doi:10.1051/0004-6361/201937339.'
short: F. Leclercq, R. Bacon, A. Verhamme, T. Garel, J. Blaizot, J. Brinchmann,
S. Cantalupo, A. Claeyssens, S. Conseil, T. Contini, T. Hashimoto, E.C. Herenz,
H. Kusakabe, R.A. Marino, M. Maseda, J.J. Matthee, P. Mitchell, G. Pezzulli, J.
Richard, K.B. Schmidt, L. Wisotzki, Astronomy & Astrophysics 635 (2020).
date_created: 2022-07-06T09:56:20Z
date_published: 2020-03-11T00:00:00Z
date_updated: 2022-07-19T09:36:58Z
day: '11'
doi: 10.1051/0004-6361/201937339
extern: '1'
external_id:
arxiv:
- '2002.05731'
intvolume: ' 635'
keyword:
- Space and Planetary Science
- 'Astronomy and Astrophysics galaxies: high-redshift / galaxies: formation / galaxies:
evolution / cosmology: observations'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2002.05731
month: '03'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The MUSE Hubble Ultra Deep field survey: XIII. Spatially resolved spectral
properties of Lyman α haloes around star-forming galaxies at z > 3'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 635
year: '2020'
...
---
_id: '11501'
abstract:
- lang: eng
text: We investigated the ultraviolet (UV) spectral properties of faint Lyman-α
emitters (LAEs) in the redshift range 2.9 ≤ z ≤ 4.6, and we provide material to
prepare future observations of the faint Universe. We used data from the MUSE
Hubble Ultra Deep Survey to construct mean rest-frame spectra of continuum-faint
(median MUV of −18 and down to MUV of −16), low stellar mass (median value of
108.4 M⊙ and down to 107 M⊙) LAEs at redshift z ≳ 3. We computed various averaged
spectra of LAEs, subsampled on the basis of their observational (e.g., Lyα strength,
UV magnitude and spectral slope) and physical (e.g., stellar mass and star-formation
rate) properties. We searched for UV spectral features other than Lyα, such as
higher ionization nebular emission lines and absorption features. We successfully
observed the O III]λ1666 and [C III]λ1907+C III]λ1909 collisionally excited emission
lines and the He IIλ1640 recombination feature, as well as the resonant C IVλλ1548,1551
doublet either in emission or P-Cygni. We compared the observed spectral properties
of the different mean spectra and find the emission lines to vary with the observational
and physical properties of the LAEs. In particular, the mean spectra of LAEs with
larger Lyα equivalent widths, fainter UV magnitudes, bluer UV spectral slopes,
and lower stellar masses show the strongest nebular emission. The line ratios
of these lines are similar to those measured in the spectra of local metal-poor
galaxies, while their equivalent widths are weaker compared to the handful of
extreme values detected in individual spectra of z > 2 galaxies. This suggests
that weak UV features are likely ubiquitous in high z, low-mass, and faint LAEs.
We publicly released the stacked spectra, as they can serve as empirical templates
for the design of future observations, such as those with the James Webb Space
Telescope and the Extremely Large Telescope.
acknowledgement: 'We thank Margherita Talia, Stéphane Charlot, Adele Plat and Alba
Vidal-García for helpful discussions. This work is supported by the ERC advanced
grant 339659-MUSICOS (R. Bacon). AF acknowledges the support from grant PRIN MIUR
2017 20173ML3WW. MVM and JP would like to thank the Leiden/ESA Astrophysics Program
for Summer Students (LEAPS) for funding at the outset of this project. FL, HK, and
AV acknowledge support from the ERC starting grant ERC-757258-TRIPLE. TH was supported
by Leading Initiative for Excellent Young Researchers, MEXT, Japan. JB acknowledges
support by FCT/MCTES through national funds by the grant UID/FIS/04434/2019, UIDB/04434/2020
and UIDP/04434/2020 and through the Investigador FCT Contract No. IF/01654/2014/CP1215/CT0003.
HI acknowledges support from JSPS KAKENHI Grant Number JP19K23462. We would also
like to thank the organizers and participants of the Leiden Lorentz Center workshop:
Revolutionary Spectroscopy of Today as a Springboard to Webb. This work made use
of several open source python packages: NUMPY (van der Walt et al. 2011), MATPLOTLIB
(Hunter 2007), ASTROPY (Astropy Collaboration 2013) and MPDAF (MUSE Python Data
Analysis Framework, Piqueras et al. 2019).'
article_number: A118
article_processing_charge: No
article_type: original
author:
- first_name: Anna
full_name: Feltre, Anna
last_name: Feltre
- first_name: Michael V.
full_name: Maseda, Michael V.
last_name: Maseda
- first_name: Roland
full_name: Bacon, Roland
last_name: Bacon
- first_name: Jayadev
full_name: Pradeep, Jayadev
last_name: Pradeep
- first_name: Floriane
full_name: Leclercq, Floriane
last_name: Leclercq
- first_name: Haruka
full_name: Kusakabe, Haruka
last_name: Kusakabe
- first_name: Lutz
full_name: Wisotzki, Lutz
last_name: Wisotzki
- first_name: Takuya
full_name: Hashimoto, Takuya
last_name: Hashimoto
- first_name: Kasper B.
full_name: Schmidt, Kasper B.
last_name: Schmidt
- first_name: Jeremy
full_name: Blaizot, Jeremy
last_name: Blaizot
- first_name: Jarle
full_name: Brinchmann, Jarle
last_name: Brinchmann
- first_name: Leindert
full_name: Boogaard, Leindert
last_name: Boogaard
- first_name: Sebastiano
full_name: Cantalupo, Sebastiano
last_name: Cantalupo
- first_name: David
full_name: Carton, David
last_name: Carton
- first_name: Hanae
full_name: Inami, Hanae
last_name: Inami
- first_name: Wolfram
full_name: Kollatschny, Wolfram
last_name: Kollatschny
- first_name: Raffaella A.
full_name: Marino, Raffaella A.
last_name: Marino
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Themiya
full_name: Nanayakkara, Themiya
last_name: Nanayakkara
- first_name: Johan
full_name: Richard, Johan
last_name: Richard
- first_name: Joop
full_name: Schaye, Joop
last_name: Schaye
- first_name: Laurence
full_name: Tresse, Laurence
last_name: Tresse
- first_name: Tanya
full_name: Urrutia, Tanya
last_name: Urrutia
- first_name: Anne
full_name: Verhamme, Anne
last_name: Verhamme
- first_name: Peter M.
full_name: Weilbacher, Peter M.
last_name: Weilbacher
citation:
ama: 'Feltre A, Maseda MV, Bacon R, et al. The MUSE Hubble Ultra Deep Field Survey:
XV. The mean rest-UV spectra of Lyα emitters at z > 3. Astronomy &
Astrophysics. 2020;641. doi:10.1051/0004-6361/202038133'
apa: 'Feltre, A., Maseda, M. V., Bacon, R., Pradeep, J., Leclercq, F., Kusakabe,
H., … Weilbacher, P. M. (2020). The MUSE Hubble Ultra Deep Field Survey: XV. The
mean rest-UV spectra of Lyα emitters at z > 3. Astronomy & Astrophysics.
EDP Sciences. https://doi.org/10.1051/0004-6361/202038133'
chicago: 'Feltre, Anna, Michael V. Maseda, Roland Bacon, Jayadev Pradeep, Floriane
Leclercq, Haruka Kusakabe, Lutz Wisotzki, et al. “The MUSE Hubble Ultra Deep Field
Survey: XV. The Mean Rest-UV Spectra of Lyα Emitters at z > 3.” Astronomy
& Astrophysics. EDP Sciences, 2020. https://doi.org/10.1051/0004-6361/202038133.'
ieee: 'A. Feltre et al., “The MUSE Hubble Ultra Deep Field Survey: XV. The
mean rest-UV spectra of Lyα emitters at z > 3,” Astronomy & Astrophysics,
vol. 641. EDP Sciences, 2020.'
ista: 'Feltre A, Maseda MV, Bacon R, Pradeep J, Leclercq F, Kusakabe H, Wisotzki
L, Hashimoto T, Schmidt KB, Blaizot J, Brinchmann J, Boogaard L, Cantalupo S,
Carton D, Inami H, Kollatschny W, Marino RA, Matthee JJ, Nanayakkara T, Richard
J, Schaye J, Tresse L, Urrutia T, Verhamme A, Weilbacher PM. 2020. The MUSE Hubble
Ultra Deep Field Survey: XV. The mean rest-UV spectra of Lyα emitters at z >
3. Astronomy & Astrophysics. 641, A118.'
mla: 'Feltre, Anna, et al. “The MUSE Hubble Ultra Deep Field Survey: XV. The Mean
Rest-UV Spectra of Lyα Emitters at z > 3.” Astronomy & Astrophysics,
vol. 641, A118, EDP Sciences, 2020, doi:10.1051/0004-6361/202038133.'
short: A. Feltre, M.V. Maseda, R. Bacon, J. Pradeep, F. Leclercq, H. Kusakabe, L.
Wisotzki, T. Hashimoto, K.B. Schmidt, J. Blaizot, J. Brinchmann, L. Boogaard,
S. Cantalupo, D. Carton, H. Inami, W. Kollatschny, R.A. Marino, J.J. Matthee,
T. Nanayakkara, J. Richard, J. Schaye, L. Tresse, T. Urrutia, A. Verhamme, P.M.
Weilbacher, Astronomy & Astrophysics 641 (2020).
date_created: 2022-07-06T09:38:16Z
date_published: 2020-09-18T00:00:00Z
date_updated: 2022-07-19T09:35:43Z
day: '18'
doi: 10.1051/0004-6361/202038133
extern: '1'
external_id:
arxiv:
- '2007.01878'
intvolume: ' 641'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: evolution / galaxies: high-redshift / ISM: lines and bands / ultraviolet:
ISM / ultraviolet: galaxies'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2007.01878
month: '09'
oa: 1
oa_version: Published Version
publication: Astronomy & Astrophysics
publication_identifier:
eissn:
- 1432-0746
issn:
- 0004-6361
publication_status: published
publisher: EDP Sciences
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The MUSE Hubble Ultra Deep Field Survey: XV. The mean rest-UV spectra of Lyα
emitters at z > 3'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 641
year: '2020'
...
---
_id: '11513'
abstract:
- lang: eng
text: We report the spectroscopic confirmation of a new protocluster in the COSMOS
field at z ∼ 2.2, COSMOS Cluster 2.2 (CC2.2), originally identified as an overdensity
of narrowband selected Hα emitting candidates. With only two masks of Keck/MOSFIRE
near-IR spectroscopy in both H (∼1.47–1.81 μm) and K (∼1.92–2.40 μm) bands (∼1.5
hr each), we confirm 35 unique protocluster members with at least two emission
lines detected with S/N > 3. Combined with 12 extra members from the zCOSMOS-deep
spectroscopic survey (47 in total), we estimate a mean redshift and a line-of-sight
velocity dispersion of zmean = 2.23224 ± 0.00101 and σlos = 645 ± 69 km s−1 for
this protocluster, respectively. Assuming virialization and spherical symmetry
for the system, we estimate a total mass of Mvir ∼ (1–2) ×1014M⊙ for the structure.
We evaluate a number density enhancement of δg ∼ 7 for this system and we argue
that the structure is likely not fully virialized at z ∼ 2.2. However, in a spherical
collapse model, δg is expected to grow to a linear matter enhancement of ∼1.9
by z = 0, exceeding the collapse threshold of 1.69, and leading to a fully collapsed
and virialized Coma-type structure with a total mass of Mdyn(z = 0) ∼ 9.2 × 1014M⊙
by now. This observationally efficient confirmation suggests that large narrowband
emission-line galaxy surveys, when combined with ancillary photometric data, can
be used to effectively trace the large-scale structure and protoclusters at a
time when they are mostly dominated by star-forming galaxies.
acknowledgement: We are thankful to the anonymous referee for useful comments and
suggestions that improved the quality of this paper. B.D. acknowledges financial
support from NASA through the Astrophysics Data Analysis Program (ADAP), grant number
NNX12AE20G, and the National Science Foundation, grant number 1716907. B.D. is thankful
to Andreas Faisst, Laura Danly, and Matthew Burlando for their companionship during
the observing run. B.D. is grateful to the COSMOS team for their useful comments
during the team meeting in New York City 2019 May 14–17. A.R. research was made
possible by Friends of W. M. Keck Observatory who philanthropically support the
Keck Science Collaborative (KSC) fund. The observations presented herein were obtained
at the W. M. Keck Observatory (program C236, PI Scoville), which is operated as
a scientific partnership among the California Institute of Technology, the University
of California, and the National Aeronautics and Space Administration. The Observatory
was made possible by the generous financial support of the W. M. Keck Foundation.
The authors would like to recognize and acknowledge the very prominent cultural
role and reverence that the summit of Maunakea has always had within the indigenous
Hawaiian community. We are fortunate to have the opportunity to perform observations
from this mountain.
article_number: '8'
article_processing_charge: No
article_type: original
author:
- first_name: Behnam
full_name: Darvish, Behnam
last_name: Darvish
- first_name: Nick Z.
full_name: Scoville, Nick Z.
last_name: Scoville
- first_name: Christopher
full_name: Martin, Christopher
last_name: Martin
- first_name: David
full_name: Sobral, David
last_name: Sobral
- first_name: Bahram
full_name: Mobasher, Bahram
last_name: Mobasher
- first_name: Alessandro
full_name: Rettura, Alessandro
last_name: Rettura
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Peter
full_name: Capak, Peter
last_name: Capak
- first_name: Nima
full_name: Chartab, Nima
last_name: Chartab
- first_name: Shoubaneh
full_name: Hemmati, Shoubaneh
last_name: Hemmati
- first_name: Daniel
full_name: Masters, Daniel
last_name: Masters
- first_name: Hooshang
full_name: Nayyeri, Hooshang
last_name: Nayyeri
- first_name: Donal
full_name: O’Sullivan, Donal
last_name: O’Sullivan
- first_name: Ana
full_name: Paulino-Afonso, Ana
last_name: Paulino-Afonso
- first_name: Zahra
full_name: Sattari, Zahra
last_name: Sattari
- first_name: Abtin
full_name: Shahidi, Abtin
last_name: Shahidi
- first_name: Mara
full_name: Salvato, Mara
last_name: Salvato
- first_name: Brian C.
full_name: Lemaux, Brian C.
last_name: Lemaux
- first_name: Olivier Le
full_name: Fèvre, Olivier Le
last_name: Fèvre
- first_name: Olga
full_name: Cucciati, Olga
last_name: Cucciati
citation:
ama: Darvish B, Scoville NZ, Martin C, et al. Spectroscopic confirmation of a coma
cluster progenitor at z ∼ 2.2. The Astrophysical Journal. 2020;892(1).
doi:10.3847/1538-4357/ab75c3
apa: Darvish, B., Scoville, N. Z., Martin, C., Sobral, D., Mobasher, B., Rettura,
A., … Cucciati, O. (2020). Spectroscopic confirmation of a coma cluster progenitor
at z ∼ 2.2. The Astrophysical Journal. IOP Publishing. https://doi.org/10.3847/1538-4357/ab75c3
chicago: Darvish, Behnam, Nick Z. Scoville, Christopher Martin, David Sobral, Bahram
Mobasher, Alessandro Rettura, Jorryt J Matthee, et al. “Spectroscopic Confirmation
of a Coma Cluster Progenitor at z ∼ 2.2.” The Astrophysical Journal. IOP
Publishing, 2020. https://doi.org/10.3847/1538-4357/ab75c3.
ieee: B. Darvish et al., “Spectroscopic confirmation of a coma cluster progenitor
at z ∼ 2.2,” The Astrophysical Journal, vol. 892, no. 1. IOP Publishing,
2020.
ista: Darvish B, Scoville NZ, Martin C, Sobral D, Mobasher B, Rettura A, Matthee
JJ, Capak P, Chartab N, Hemmati S, Masters D, Nayyeri H, O’Sullivan D, Paulino-Afonso
A, Sattari Z, Shahidi A, Salvato M, Lemaux BC, Fèvre OL, Cucciati O. 2020. Spectroscopic
confirmation of a coma cluster progenitor at z ∼ 2.2. The Astrophysical Journal.
892(1), 8.
mla: Darvish, Behnam, et al. “Spectroscopic Confirmation of a Coma Cluster Progenitor
at z ∼ 2.2.” The Astrophysical Journal, vol. 892, no. 1, 8, IOP Publishing,
2020, doi:10.3847/1538-4357/ab75c3.
short: B. Darvish, N.Z. Scoville, C. Martin, D. Sobral, B. Mobasher, A. Rettura,
J.J. Matthee, P. Capak, N. Chartab, S. Hemmati, D. Masters, H. Nayyeri, D. O’Sullivan,
A. Paulino-Afonso, Z. Sattari, A. Shahidi, M. Salvato, B.C. Lemaux, O.L. Fèvre,
O. Cucciati, The Astrophysical Journal 892 (2020).
date_created: 2022-07-06T13:10:51Z
date_published: 2020-03-19T00:00:00Z
date_updated: 2022-07-19T09:31:35Z
day: '19'
doi: 10.3847/1538-4357/ab75c3
extern: '1'
external_id:
arxiv:
- '2002.06207'
intvolume: ' 892'
issue: '1'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2002.06207
month: '03'
oa: 1
oa_version: Preprint
publication: The Astrophysical Journal
publication_identifier:
eissn:
- 1538-4357
issn:
- 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: Spectroscopic confirmation of a coma cluster progenitor at z ∼ 2.2
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 892
year: '2020'
...
---
_id: '11528'
abstract:
- lang: eng
text: Ly α emission lines are typically found to be redshifted with respect to the
systemic redshifts of galaxies, likely due to resonant scattering of Ly α photons.
Here, we measure the average velocity offset for a sample of 96 z ≈ 3.3 Ly α emitters
(LAEs) with a median Ly α flux (luminosity) of ≈10−17 erg cm−2 s−1 (≈1042 erg
s−1) and a median star formation rate (SFR) of ≈1.3 M⊙ yr−1 (not corrected for
possible dust extinction), detected by the Multi-Unit Spectroscopic Explorer as
part of our MUSEQuBES circumgalactic medium (CGM) survey. By postulating that
the stacked CGM absorption profiles of these LAEs, probed by eight background
quasars, must be centred on the systemic redshift, we measure an average velocity
offset, Voffset = 171\pm 8 km s−1, between the Ly α emission peak and the systemic
redshift. The observed Voffset is lower by factors of ≈1.4 and ≈2.6 compared to
the velocity offsets measured for narrow-band-selected LAEs and Lyman break galaxies,
respectively, which probe galaxies with higher masses and SFRs. Consistent with
earlier studies based on direct measurements for individual objects, we find that
the Voffset is correlated with the full width at half-maximum of the red peak
of the Ly α line, and anticorrelated with the rest-frame equivalent width. Moreover,
we find that Voffset is correlated with SFR with a sub-linear scaling relation,
Voffset∝SFR0.16±0.03. Adopting the mass scaling for main-sequence galaxies, such
a relation suggests that Voffset scales with the circular velocity of the dark
matter haloes hosting the LAEs.
acknowledgement: 'We thank the anonymous referee for useful suggestions. This study
is based on observations collected at the European Organisation for Astronomical
Research in the Southern Hemisphere under ESO programme(s): 094.A-0131(B), 095.A
0200(A), 096.A0222(A), 097.A-0089(A), and 099.A-0159(A). SM acknowledges support
from the Alexander von Humboldt Foundation, Germany. SM thanks Christian Herenz
for useful discussion. SC gratefully acknowledges support from Swiss National Science
Foundation grant PP00P2 163824. JB acknowledges support by FCT/MCTES through national
funds by grant UID/FIS/04434/2019 and through Investigador FCT Contract No. IF/01654/2014/CP1215/CT0003.
NB and JZ acknowledge support from ANR grant ANR-17-CE31- 0017 (3DGasFlows). AC
and JR acknowledge support from the ERC starting grant 336736-CALENDS. MA acknowledges
support from European Union’s H2020 Marie Skłodowska-Curie Actions grant 721463
to the SUNDIAL ITN, and from the Spanish Ministry of Economy and Competitiveness
(MINECO) under grant number AYA2016-76219-P. MA also acknowledges support from the
Fundacion BBVA under its 2017 programme of assistance to ´scientific research groups,
for the project ‘Using machine-learning techniques to drag galaxies from the noise
in deep imaging’. FL and AV acknowledge support from the ERC starting grant ERC757258-TRIPLE.'
article_processing_charge: No
article_type: original
author:
- first_name: Sowgat
full_name: Muzahid, Sowgat
last_name: Muzahid
- first_name: Joop
full_name: Schaye, Joop
last_name: Schaye
- first_name: Raffaella Anna
full_name: Marino, Raffaella Anna
last_name: Marino
- first_name: Sebastiano
full_name: Cantalupo, Sebastiano
last_name: Cantalupo
- first_name: Jarle
full_name: Brinchmann, Jarle
last_name: Brinchmann
- first_name: Thierry
full_name: Contini, Thierry
last_name: Contini
- first_name: Martin
full_name: Wendt, Martin
last_name: Wendt
- first_name: Lutz
full_name: Wisotzki, Lutz
last_name: Wisotzki
- first_name: Johannes
full_name: Zabl, Johannes
last_name: Zabl
- first_name: Nicolas
full_name: Bouché, Nicolas
last_name: Bouché
- first_name: Mohammad
full_name: Akhlaghi, Mohammad
last_name: Akhlaghi
- first_name: Hsiao-Wen
full_name: Chen, Hsiao-Wen
last_name: Chen
- first_name: Adélaîde
full_name: Claeyssens, Adélaîde
last_name: Claeyssens
- first_name: Sean
full_name: Johnson, Sean
last_name: Johnson
- first_name: Floriane
full_name: Leclercq, Floriane
last_name: Leclercq
- first_name: Michael
full_name: Maseda, Michael
last_name: Maseda
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Johan
full_name: Richard, Johan
last_name: Richard
- first_name: Tanya
full_name: Urrutia, Tanya
last_name: Urrutia
- first_name: Anne
full_name: Verhamme, Anne
last_name: Verhamme
citation:
ama: 'Muzahid S, Schaye J, Marino RA, et al. MUSEQuBES: Calibrating the redshifts
of Lyα emitters using stacked circumgalactic medium absorption profiles. Monthly
Notices of the Royal Astronomical Society. 2020;496(2):1013-1022. doi:10.1093/mnras/staa1347'
apa: 'Muzahid, S., Schaye, J., Marino, R. A., Cantalupo, S., Brinchmann, J., Contini,
T., … Verhamme, A. (2020). MUSEQuBES: Calibrating the redshifts of Lyα emitters
using stacked circumgalactic medium absorption profiles. Monthly Notices of
the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/staa1347'
chicago: 'Muzahid, Sowgat, Joop Schaye, Raffaella Anna Marino, Sebastiano Cantalupo,
Jarle Brinchmann, Thierry Contini, Martin Wendt, et al. “MUSEQuBES: Calibrating
the Redshifts of Lyα Emitters Using Stacked Circumgalactic Medium Absorption Profiles.”
Monthly Notices of the Royal Astronomical Society. Oxford University Press,
2020. https://doi.org/10.1093/mnras/staa1347.'
ieee: 'S. Muzahid et al., “MUSEQuBES: Calibrating the redshifts of Lyα emitters
using stacked circumgalactic medium absorption profiles,” Monthly Notices of
the Royal Astronomical Society, vol. 496, no. 2. Oxford University Press,
pp. 1013–1022, 2020.'
ista: 'Muzahid S, Schaye J, Marino RA, Cantalupo S, Brinchmann J, Contini T, Wendt
M, Wisotzki L, Zabl J, Bouché N, Akhlaghi M, Chen H-W, Claeyssens A, Johnson S,
Leclercq F, Maseda M, Matthee JJ, Richard J, Urrutia T, Verhamme A. 2020. MUSEQuBES:
Calibrating the redshifts of Lyα emitters using stacked circumgalactic medium
absorption profiles. Monthly Notices of the Royal Astronomical Society. 496(2),
1013–1022.'
mla: 'Muzahid, Sowgat, et al. “MUSEQuBES: Calibrating the Redshifts of Lyα Emitters
Using Stacked Circumgalactic Medium Absorption Profiles.” Monthly Notices of
the Royal Astronomical Society, vol. 496, no. 2, Oxford University Press,
2020, pp. 1013–22, doi:10.1093/mnras/staa1347.'
short: S. Muzahid, J. Schaye, R.A. Marino, S. Cantalupo, J. Brinchmann, T. Contini,
M. Wendt, L. Wisotzki, J. Zabl, N. Bouché, M. Akhlaghi, H.-W. Chen, A. Claeyssens,
S. Johnson, F. Leclercq, M. Maseda, J.J. Matthee, J. Richard, T. Urrutia, A. Verhamme,
Monthly Notices of the Royal Astronomical Society 496 (2020) 1013–1022.
date_created: 2022-07-07T10:20:11Z
date_published: 2020-08-01T00:00:00Z
date_updated: 2022-08-18T11:00:24Z
day: '01'
doi: 10.1093/mnras/staa1347
extern: '1'
external_id:
arxiv:
- '1910.03593'
intvolume: ' 496'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: haloes'
- 'galaxies: high-redshift'
- 'quasars: absorption lines'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1910.03593
month: '08'
oa: 1
oa_version: Preprint
page: 1013-1022
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
related_material:
link:
- relation: erratum
url: https://doi.org/10.1093/mnras/staa2668
scopus_import: '1'
status: public
title: 'MUSEQuBES: Calibrating the redshifts of Lyα emitters using stacked circumgalactic
medium absorption profiles'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 496
year: '2020'
...
---
_id: '11529'
abstract:
- lang: eng
text: CR7 is among the most luminous Ly α emitters (LAEs) known at z = 6.6 and consists
of at least three UV components that are surrounded by Ly α emission. Previous
studies have suggested that it may host an extreme ionizing source. Here, we present
deep integral field spectroscopy of CR7 with VLT/Multi Unit Spectroscopic Explorer
(MUSE). We measure extended emission with a similar halo scale length as typical
LAEs at z ≈ 5. CR7’s Ly α halo is clearly elongated along the direction connecting
the multiple components, likely tracing the underlying gas distribution. The Ly α
emission originates almost exclusively from the brightest UV component, but we
also identify a faint kinematically distinct Ly α emitting region nearby a fainter
component. Combined with new near-infrared data, the MUSE data show that the rest-frame
Ly α equivalent width (EW) is ≈100 Å. This is a factor 4 higher than the EW measured
in low-redshift analogues with carefully matched Ly α profiles (and thus arguably
H I column density), but this EW can plausibly be explained by star formation.
Alternative scenarios requiring active galactic nucleus (AGN) powering are also
disfavoured by the narrower and steeper Ly α spectrum and much smaller IR to UV
ratio compared to obscured AGN in other Ly α blobs. CR7’s Ly α emission, while
extremely luminous, resembles the emission in more common LAEs at lower redshifts
very well and is likely powered by a young metal-poor starburst.
article_processing_charge: No
article_type: original
author:
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Gabriele
full_name: Pezzulli, Gabriele
last_name: Pezzulli
- first_name: Ruari
full_name: Mackenzie, Ruari
last_name: Mackenzie
- first_name: Sebastiano
full_name: Cantalupo, Sebastiano
last_name: Cantalupo
- first_name: Haruka
full_name: Kusakabe, Haruka
last_name: Kusakabe
- first_name: Floriane
full_name: Leclercq, Floriane
last_name: Leclercq
- first_name: David
full_name: Sobral, David
last_name: Sobral
- first_name: Johan
full_name: Richard, Johan
last_name: Richard
- first_name: Lutz
full_name: Wisotzki, Lutz
last_name: Wisotzki
- first_name: Simon
full_name: Lilly, Simon
last_name: Lilly
- first_name: Leindert
full_name: Boogaard, Leindert
last_name: Boogaard
- first_name: Raffaella
full_name: Marino, Raffaella
last_name: Marino
- first_name: Michael
full_name: Maseda, Michael
last_name: Maseda
- first_name: Themiya
full_name: Nanayakkara, Themiya
last_name: Nanayakkara
citation:
ama: 'Matthee JJ, Pezzulli G, Mackenzie R, et al. The nature of CR7 revealed with
MUSE: A young starburst powering extended Ly α emission at z = 6.6. Monthly
Notices of the Royal Astronomical Society. 2020;498(2):3043-3059. doi:10.1093/mnras/staa2550'
apa: 'Matthee, J. J., Pezzulli, G., Mackenzie, R., Cantalupo, S., Kusakabe, H.,
Leclercq, F., … Nanayakkara, T. (2020). The nature of CR7 revealed with MUSE:
A young starburst powering extended Ly α emission at z = 6.6. Monthly Notices
of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/staa2550'
chicago: 'Matthee, Jorryt J, Gabriele Pezzulli, Ruari Mackenzie, Sebastiano Cantalupo,
Haruka Kusakabe, Floriane Leclercq, David Sobral, et al. “The Nature of CR7 Revealed
with MUSE: A Young Starburst Powering Extended Ly α Emission at z = 6.6.” Monthly
Notices of the Royal Astronomical Society. Oxford University Press, 2020.
https://doi.org/10.1093/mnras/staa2550.'
ieee: 'J. J. Matthee et al., “The nature of CR7 revealed with MUSE: A young
starburst powering extended Ly α emission at z = 6.6,” Monthly Notices of the
Royal Astronomical Society, vol. 498, no. 2. Oxford University Press, pp.
3043–3059, 2020.'
ista: 'Matthee JJ, Pezzulli G, Mackenzie R, Cantalupo S, Kusakabe H, Leclercq F,
Sobral D, Richard J, Wisotzki L, Lilly S, Boogaard L, Marino R, Maseda M, Nanayakkara
T. 2020. The nature of CR7 revealed with MUSE: A young starburst powering extended
Ly α emission at z = 6.6. Monthly Notices of the Royal Astronomical Society. 498(2),
3043–3059.'
mla: 'Matthee, Jorryt J., et al. “The Nature of CR7 Revealed with MUSE: A Young
Starburst Powering Extended Ly α Emission at z = 6.6.” Monthly Notices of the
Royal Astronomical Society, vol. 498, no. 2, Oxford University Press, 2020,
pp. 3043–59, doi:10.1093/mnras/staa2550.'
short: J.J. Matthee, G. Pezzulli, R. Mackenzie, S. Cantalupo, H. Kusakabe, F. Leclercq,
D. Sobral, J. Richard, L. Wisotzki, S. Lilly, L. Boogaard, R. Marino, M. Maseda,
T. Nanayakkara, Monthly Notices of the Royal Astronomical Society 498 (2020) 3043–3059.
date_created: 2022-07-07T10:36:01Z
date_published: 2020-10-01T00:00:00Z
date_updated: 2022-08-18T11:04:05Z
day: '01'
doi: 10.1093/mnras/staa2550
extern: '1'
external_id:
arxiv:
- '2008.01731'
intvolume: ' 498'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: evolution'
- 'galaxies: high-redshift'
- dark ages
- reionization
- first stars
- 'cosmology: observations'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2008.01731
month: '10'
oa: 1
oa_version: Preprint
page: 3043-3059
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The nature of CR7 revealed with MUSE: A young starburst powering extended
Ly α emission at z = 6.6'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 498
year: '2020'
...
---
_id: '11533'
abstract:
- lang: eng
text: We explore deep rest-frame UV to FIR data in the COSMOS field to measure the
individual spectral energy distributions (SED) of the ∼4000 SC4K (Sobral et al.)
Lyman α (Ly α) emitters (LAEs) at z ∼ 2–6. We find typical stellar masses of 109.3
± 0.6 M⊙ and star formation rates (SFR) of SFRSED=4.4+10.5−2.4 M⊙ yr−1 and SFRLyα=5.9+6.3−2.6 M⊙ yr−1,
combined with very blue UV slopes of β=−2.1+0.5−0.4, but with significant variations
within the population. MUV and β are correlated in a similar way to UV-selected
sources, but LAEs are consistently bluer. This suggests that LAEs are the youngest
and/or most dust-poor subset of the UV-selected population. We also study the
Ly α rest-frame equivalent width (EW0) and find 45 ‘extreme’ LAEs with EW0 > 240 Å
(3σ), implying a low number density of (7 ± 1) × 10−7 Mpc−3. Overall, we measure
little to no evolution of the Ly α EW0 and scale length parameter (w0), which
are consistently high (EW0=140+280−70 Å, w0=129+11−11 Å) from z ∼ 6 to z ∼ 2 and
below. However, w0 is anticorrelated with MUV and stellar mass. Our results imply
that sources selected as LAEs have a high Ly α escape fraction (fesc,Ly α) irrespective
of cosmic time, but fesc,Ly α is still higher for UV-fainter and lower mass LAEs.
The least massive LAEs (<109.5 M⊙) are typically located above the star formation
‘main sequence’ (MS), but the offset from the MS decreases towards z ∼ 6 and towards
1010 M⊙. Our results imply a lack of evolution in the properties of LAEs across
time and reveals the increasing overlap in properties of LAEs and UV-continuum
selected galaxies as typical star-forming galaxies at high redshift effectively
become LAEs.
acknowledgement: We thank the anonymous referee for the valuable feedback that significantly
improved the quality and clarity of this paper. SS and JC acknowledge studentships
from Lancaster University. APA acknowledges support from Fundação para a Ciência
e a Tecnologia through the project PTDC/FISAST/31546/2017. The authors would like
to thank Ali Khostovan, Sara Perez Sanchez, Alex Bennett and Tom Rose for contributions
and discussions in the early stages of this work. Based on data products from observations
made with ESO Telescopes at the La Silla Paranal Observatory under ESO programme
ID 179.A-2005 and on data products produced by CALET and the Cambridge Astronomy
Survey Unit on behalf of the UltraVISTA consortium. Finally, the authors acknowledge
the unique value of the publicly available analysis software TOPCAT (Taylor 2005)
and publicly available programming language Python, including the numpy, pyfits,
matplotlib, scipy and astropy (Astropy Collaboration et al. 2013) packages. This
work is based on the public SC4K sample of LAEs (Sobral et al. 2018a) and we release
the full catalogue with all the photometry and properties derived in this paper,
in electronic format, along with the relevant tables.
article_processing_charge: No
article_type: original
author:
- first_name: S
full_name: Santos, S
last_name: Santos
- first_name: D
full_name: Sobral, D
last_name: Sobral
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: J
full_name: Calhau, J
last_name: Calhau
- first_name: E
full_name: da Cunha, E
last_name: da Cunha
- first_name: B
full_name: Ribeiro, B
last_name: Ribeiro
- first_name: A
full_name: Paulino-Afonso, A
last_name: Paulino-Afonso
- first_name: P
full_name: Arrabal Haro, P
last_name: Arrabal Haro
- first_name: J
full_name: Butterworth, J
last_name: Butterworth
citation:
ama: Santos S, Sobral D, Matthee JJ, et al. The evolution of rest-frame UV properties,
Ly α EWs, and the SFR–stellar mass relation at z ∼ 2–6 for SC4K LAEs. Monthly
Notices of the Royal Astronomical Society. 2020;493(1):141-160. doi:10.1093/mnras/staa093
apa: Santos, S., Sobral, D., Matthee, J. J., Calhau, J., da Cunha, E., Ribeiro,
B., … Butterworth, J. (2020). The evolution of rest-frame UV properties, Ly α
EWs, and the SFR–stellar mass relation at z ∼ 2–6 for SC4K LAEs. Monthly Notices
of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/staa093
chicago: Santos, S, D Sobral, Jorryt J Matthee, J Calhau, E da Cunha, B Ribeiro,
A Paulino-Afonso, P Arrabal Haro, and J Butterworth. “The Evolution of Rest-Frame
UV Properties, Ly α EWs, and the SFR–Stellar Mass Relation at z ∼ 2–6 for SC4K
LAEs.” Monthly Notices of the Royal Astronomical Society. Oxford University
Press, 2020. https://doi.org/10.1093/mnras/staa093.
ieee: S. Santos et al., “The evolution of rest-frame UV properties, Ly α
EWs, and the SFR–stellar mass relation at z ∼ 2–6 for SC4K LAEs,” Monthly Notices
of the Royal Astronomical Society, vol. 493, no. 1. Oxford University Press,
pp. 141–160, 2020.
ista: Santos S, Sobral D, Matthee JJ, Calhau J, da Cunha E, Ribeiro B, Paulino-Afonso
A, Arrabal Haro P, Butterworth J. 2020. The evolution of rest-frame UV properties,
Ly α EWs, and the SFR–stellar mass relation at z ∼ 2–6 for SC4K LAEs. Monthly
Notices of the Royal Astronomical Society. 493(1), 141–160.
mla: Santos, S., et al. “The Evolution of Rest-Frame UV Properties, Ly α EWs, and
the SFR–Stellar Mass Relation at z ∼ 2–6 for SC4K LAEs.” Monthly Notices of
the Royal Astronomical Society, vol. 493, no. 1, Oxford University Press,
2020, pp. 141–60, doi:10.1093/mnras/staa093.
short: S. Santos, D. Sobral, J.J. Matthee, J. Calhau, E. da Cunha, B. Ribeiro, A.
Paulino-Afonso, P. Arrabal Haro, J. Butterworth, Monthly Notices of the Royal
Astronomical Society 493 (2020) 141–160.
date_created: 2022-07-07T12:05:23Z
date_published: 2020-03-01T00:00:00Z
date_updated: 2022-08-18T11:27:43Z
day: '01'
doi: 10.1093/mnras/staa093
extern: '1'
external_id:
arxiv:
- '1910.02959'
intvolume: ' 493'
issue: '1'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: evolution'
- 'galaxies: formation'
- 'galaxies: high-redshift'
- 'galaxies: star formation'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1910.02959
month: '03'
oa: 1
oa_version: Preprint
page: 141-160
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: The evolution of rest-frame UV properties, Ly α EWs, and the SFR–stellar mass
relation at z ∼ 2–6 for SC4K LAEs
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 493
year: '2020'
...
---
_id: '11534'
abstract:
- lang: eng
text: The observed properties of the Lyman-α (Ly α) emission line are a powerful
probe of neutral gas in and around galaxies. We present spatially resolved Ly α
spectroscopy with VLT/MUSE targeting VR7, a UV-luminous galaxy at z = 6.532 with
moderate Ly α equivalent width (EW0 ≈ 38 Å). These data are combined with deep
resolved [CII]158μm spectroscopy obtained with ALMA and UV imaging from HST and
we also detect UV continuum with MUSE. Ly α emission is clearly detected with
S/N ≈ 40 and FWHM of 374 km s−1. Ly α and [C II] are similarly extended beyond
the UV, with effective radius reff = 2.1 ± 0.2 kpc for a single exponential model
or reff,Lyα,halo=3.45+1.08−0.87 kpc when measured jointly with the UV continuum.
The Ly α profile is broader and redshifted with respect to the [C II] line (by
213 km s−1), but there are spatial variations that are qualitatively similar in
both lines and coincide with resolved UV components. This suggests that the emission
originates from two components with plausibly different H I column densities.
We place VR7 in the context of other galaxies at similar and lower redshift. The
Ly α halo scale length is similar at different redshifts and velocity shifts with
respect to the systemic are typically smaller. Overall, we find little indications
of a more neutral vicinity at higher redshift. This means that the local (∼10 kpc)
neutral gas conditions that determine the observed Ly α properties in VR7 resemble
the conditions in post-reionization galaxies.
acknowledgement: 'We thank the referee for their suggestions and constructive comments
that helped to improve the presentation of our results. Based on observations obtained
with the Very Large Telescope, program 99.A-0462. Based on observations made with
the NASA/ESA Hubble Space Telescope, obtained at the Space Telescope Science Institute,
which is operated by the Association of Universities for Research in Astronomy,
Inc., under NASA contract NAS 5-26555. These observations are associated with program
#14699. This paper makes use of the following ALMA data: ADS/JAO.ALMA#2017.1.01451.S.
ALMA is a partnership of ESO (representing its member states), NSF (USA), and NINS
(Japan), together with NRC (Canada) and NSC and ASIAA (Taiwan) and KASI (Republic
of Korea), in cooperation with the Republic of Chile. The Joint ALMA Observatory
is operated by ESO, AUI/NRAO, and NAOJ. MG acknowledges support from NASA grant
NNX17AK58G. GP and SC gratefully acknowledge support from Swiss National Science
Foundation grant PP00P2 163824. BD acknowledges financial support from the National
Science Foundation, grant number 1716907. We have benefited greatly from the public
available programming language PYTHON, including the NUMPY, MATPLOTLIB, SCIPY (Jones
et al. 2001; Hunter 2007; van der Walt, Colbert & Varoquaux 2011) and ASTROPY (Astropy
Collaboration 2013) packages, the astronomical imaging tools SEXTRACTOR, SWARP,
and SCAMP (Bertin & Arnouts 1996; Bertin 2006, 2010) and the TOPCAT analysis tool
(Taylor 2013).'
article_processing_charge: No
article_type: original
author:
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: David
full_name: Sobral, David
last_name: Sobral
- first_name: Max
full_name: Gronke, Max
last_name: Gronke
- first_name: Gabriele
full_name: Pezzulli, Gabriele
last_name: Pezzulli
- first_name: Sebastiano
full_name: Cantalupo, Sebastiano
last_name: Cantalupo
- first_name: Huub
full_name: Röttgering, Huub
last_name: Röttgering
- first_name: Behnam
full_name: Darvish, Behnam
last_name: Darvish
- first_name: Sérgio
full_name: Santos, Sérgio
last_name: Santos
citation:
ama: Matthee JJ, Sobral D, Gronke M, et al. Resolved Lyman-α properties of a luminous
Lyman-break galaxy in a large ionized bubble at z = 6.53 . Monthly Notices
of the Royal Astronomical Society. 2020;492(2):1778-1790. doi:10.1093/mnras/stz3554
apa: Matthee, J. J., Sobral, D., Gronke, M., Pezzulli, G., Cantalupo, S., Röttgering,
H., … Santos, S. (2020). Resolved Lyman-α properties of a luminous Lyman-break
galaxy in a large ionized bubble at z = 6.53 . Monthly Notices of the Royal
Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/stz3554
chicago: Matthee, Jorryt J, David Sobral, Max Gronke, Gabriele Pezzulli, Sebastiano
Cantalupo, Huub Röttgering, Behnam Darvish, and Sérgio Santos. “Resolved Lyman-α
Properties of a Luminous Lyman-Break Galaxy in a Large Ionized Bubble at z = 6.53
.” Monthly Notices of the Royal Astronomical Society. Oxford University
Press, 2020. https://doi.org/10.1093/mnras/stz3554.
ieee: J. J. Matthee et al., “Resolved Lyman-α properties of a luminous Lyman-break
galaxy in a large ionized bubble at z = 6.53 ,” Monthly Notices of the Royal
Astronomical Society, vol. 492, no. 2. Oxford University Press, pp. 1778–1790,
2020.
ista: Matthee JJ, Sobral D, Gronke M, Pezzulli G, Cantalupo S, Röttgering H, Darvish
B, Santos S. 2020. Resolved Lyman-α properties of a luminous Lyman-break galaxy
in a large ionized bubble at z = 6.53 . Monthly Notices of the Royal Astronomical
Society. 492(2), 1778–1790.
mla: Matthee, Jorryt J., et al. “Resolved Lyman-α Properties of a Luminous Lyman-Break
Galaxy in a Large Ionized Bubble at z = 6.53 .” Monthly Notices of the Royal
Astronomical Society, vol. 492, no. 2, Oxford University Press, 2020, pp.
1778–90, doi:10.1093/mnras/stz3554.
short: J.J. Matthee, D. Sobral, M. Gronke, G. Pezzulli, S. Cantalupo, H. Röttgering,
B. Darvish, S. Santos, Monthly Notices of the Royal Astronomical Society 492 (2020)
1778–1790.
date_created: 2022-07-07T12:21:36Z
date_published: 2020-02-01T00:00:00Z
date_updated: 2022-08-18T11:29:53Z
day: '01'
doi: 10.1093/mnras/stz3554
extern: '1'
external_id:
arxiv:
- '1909.06376'
intvolume: ' 492'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: evolution'
- 'galaxies: high-redshift'
- dark ages
- reionization
- first stars
- 'cosmology: observations'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1909.06376
month: '02'
oa: 1
oa_version: Preprint
page: 1778-1790
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Resolved Lyman-α properties of a luminous Lyman-break galaxy in a large ionized
bubble at z = 6.53 '
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 492
year: '2020'
...
---
_id: '11531'
abstract:
- lang: eng
text: While low-luminosity galaxies dominate number counts at all redshifts, their
contribution to cosmic reionization is poorly understood due to a lack of knowledge
of their physical properties. We isolate a sample of 35 z ≈ 4–5 continuum-faint
Lyman-α emitters from deep VLT/MUSE spectroscopy and directly measure their H α
emission using stacked Spitzer/IRAC Ch. 1 photometry. Based on Hubble Space Telescope
imaging, we determine that the average UV continuum magnitude is fainter than
−16 (≈ 0.01 L⋆), implying a median Lyman-α equivalent width of 259 Å. By combining
the H α measurement with the UV magnitude, we determine the ionizing photon production
efficiency, ξion, a first for such faint galaxies. The measurement of log10 (ξion
[Hz erg−1]) = 26.28 (+0.28−0.40) is in excess of literature measurements of
both continuum- and emission line-selected samples, implying a more efficient
production of ionizing photons in these lower luminosity, Lyman-α-selected systems.
We conclude that this elevated efficiency can be explained by stellar populations
with metallicities between 4 × 10−4 and 0.008, with light-weighted ages less than
3 Myr.
acknowledgement: 'We would like to thank the anonymous referee for a thoughtful report
and suggestions that have improved this manuscript. We are also grateful to everyone
involved in the Spitzer Space Telescope mission and everyone at the Spitzer Science
Center: we are truly fortunate to have been able to use data from this facility.
J. B. acknowledges support by FCT/MCTES through national funds by this grant UID/FIS/04434/2019
and through the Investigador FCT contract no. IF/01654/2014/CP1215/CT0003. S. C.
gratefully acknowledges support from Swiss National Science Foundation grant PP00P2
163824. We would also like to thank Mauro Stefanon for his assistance with de-blending
the IRAC photometry, Pieter van Dokkum for a number of useful suggestions, and Daniel
Schaerer for information regarding the stellar population models. This study is
based on observations made with ESO telescopes at the La Silla Paranal Observatory
under programs IDs 094.A-2089(B), 095.A0010(A), 096.A-0045(A), and 096.A-0045(B).'
article_processing_charge: No
article_type: original
author:
- first_name: Michael V
full_name: Maseda, Michael V
last_name: Maseda
- first_name: Roland
full_name: Bacon, Roland
last_name: Bacon
- first_name: Daniel
full_name: Lam, Daniel
last_name: Lam
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Jarle
full_name: Brinchmann, Jarle
last_name: Brinchmann
- first_name: Joop
full_name: Schaye, Joop
last_name: Schaye
- first_name: Ivo
full_name: Labbe, Ivo
last_name: Labbe
- first_name: Kasper B
full_name: Schmidt, Kasper B
last_name: Schmidt
- first_name: Leindert
full_name: Boogaard, Leindert
last_name: Boogaard
- first_name: Rychard
full_name: Bouwens, Rychard
last_name: Bouwens
- first_name: Sebastiano
full_name: Cantalupo, Sebastiano
last_name: Cantalupo
- first_name: Marijn
full_name: Franx, Marijn
last_name: Franx
- first_name: Takuya
full_name: Hashimoto, Takuya
last_name: Hashimoto
- first_name: Hanae
full_name: Inami, Hanae
last_name: Inami
- first_name: Haruka
full_name: Kusakabe, Haruka
last_name: Kusakabe
- first_name: Guillaume
full_name: Mahler, Guillaume
last_name: Mahler
- first_name: Themiya
full_name: Nanayakkara, Themiya
last_name: Nanayakkara
- first_name: Johan
full_name: Richard, Johan
last_name: Richard
- first_name: Lutz
full_name: Wisotzki, Lutz
last_name: Wisotzki
citation:
ama: Maseda MV, Bacon R, Lam D, et al. Elevated ionizing photon production efficiency
in faint high-equivalent-width Lyman-α emitters. Monthly Notices of the Royal
Astronomical Society. 2020;493(4):5120-5130. doi:10.1093/mnras/staa622
apa: Maseda, M. V., Bacon, R., Lam, D., Matthee, J. J., Brinchmann, J., Schaye,
J., … Wisotzki, L. (2020). Elevated ionizing photon production efficiency in faint
high-equivalent-width Lyman-α emitters. Monthly Notices of the Royal Astronomical
Society. Oxford University Press. https://doi.org/10.1093/mnras/staa622
chicago: Maseda, Michael V, Roland Bacon, Daniel Lam, Jorryt J Matthee, Jarle Brinchmann,
Joop Schaye, Ivo Labbe, et al. “Elevated Ionizing Photon Production Efficiency
in Faint High-Equivalent-Width Lyman-α Emitters.” Monthly Notices of the Royal
Astronomical Society. Oxford University Press, 2020. https://doi.org/10.1093/mnras/staa622.
ieee: M. V. Maseda et al., “Elevated ionizing photon production efficiency
in faint high-equivalent-width Lyman-α emitters,” Monthly Notices of the Royal
Astronomical Society, vol. 493, no. 4. Oxford University Press, pp. 5120–5130,
2020.
ista: Maseda MV, Bacon R, Lam D, Matthee JJ, Brinchmann J, Schaye J, Labbe I, Schmidt
KB, Boogaard L, Bouwens R, Cantalupo S, Franx M, Hashimoto T, Inami H, Kusakabe
H, Mahler G, Nanayakkara T, Richard J, Wisotzki L. 2020. Elevated ionizing photon
production efficiency in faint high-equivalent-width Lyman-α emitters. Monthly
Notices of the Royal Astronomical Society. 493(4), 5120–5130.
mla: Maseda, Michael V., et al. “Elevated Ionizing Photon Production Efficiency
in Faint High-Equivalent-Width Lyman-α Emitters.” Monthly Notices of the Royal
Astronomical Society, vol. 493, no. 4, Oxford University Press, 2020, pp.
5120–30, doi:10.1093/mnras/staa622.
short: M.V. Maseda, R. Bacon, D. Lam, J.J. Matthee, J. Brinchmann, J. Schaye, I.
Labbe, K.B. Schmidt, L. Boogaard, R. Bouwens, S. Cantalupo, M. Franx, T. Hashimoto,
H. Inami, H. Kusakabe, G. Mahler, T. Nanayakkara, J. Richard, L. Wisotzki, Monthly
Notices of the Royal Astronomical Society 493 (2020) 5120–5130.
date_created: 2022-07-07T10:46:41Z
date_published: 2020-04-01T00:00:00Z
date_updated: 2022-08-18T11:23:27Z
day: '01'
doi: 10.1093/mnras/staa622
extern: '1'
external_id:
arxiv:
- '2002.11117'
intvolume: ' 493'
issue: '4'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'Galaxies: evolution'
- 'Galaxies: high-redshift'
- 'Galaxies: ISM'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1093/mnras/staa622
month: '04'
oa: 1
oa_version: Published Version
page: 5120-5130
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Elevated ionizing photon production efficiency in faint high-equivalent-width
Lyman-α emitters
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 493
year: '2020'
...
---
_id: '11530'
abstract:
- lang: eng
text: A prediction of the classic active galactic nucleus (AGN) unification model
is the presence of ionization cones with different orientations depending on the
AGN type. Confirmations of this model exist for present times, but it is less
clear in the early Universe. Here, we use the morphology of giant Ly α nebulae
around AGNs at redshift z ∼ 3 to probe AGN emission and therefore the validity
of the AGN unification model at this redshift. We compare the spatial morphology
of 19 nebulae previously found around type I AGNs with a new sample of four Ly α
nebulae detected around type II AGNs. Using two independent techniques, we find
that nebulae around type II AGNs are more asymmetric than around type I, at least
at radial distances r > 30 physical kpc (pkpc) from the ionizing source. We conclude
that the type I and type II AGNs in our sample show evidence of different surrounding
ionizing geometries. This suggests that the classical AGN unification model is
also valid for high-redshift sources. Finally, we discuss how the lack of asymmetry
in the inner parts (r ≲ 30 pkpc) and the associated high values of the He II to
Ly α ratios in these regions could indicate additional sources of (hard) ionizing
radiation originating within or in proximity of the AGN host galaxies. This work
demonstrates that the morphologies of giant Ly α nebulae can be used to understand
and study the geometry of high-redshift AGNs on circumnuclear scales and it lays
the foundation for future studies using much larger statistical samples.
acknowledgement: SC and GP gratefully acknowledge support from Swiss National Science
Foundation grant PP00P2 163824. MK acknowledges support by DLR500R1904.
article_processing_charge: No
article_type: original
author:
- first_name: J S
full_name: den Brok, J S
last_name: den Brok
- first_name: S
full_name: Cantalupo, S
last_name: Cantalupo
- first_name: R
full_name: Mackenzie, R
last_name: Mackenzie
- first_name: R A
full_name: Marino, R A
last_name: Marino
- first_name: G
full_name: Pezzulli, G
last_name: Pezzulli
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: S D
full_name: Johnson, S D
last_name: Johnson
- first_name: M
full_name: Krumpe, M
last_name: Krumpe
- first_name: T
full_name: Urrutia, T
last_name: Urrutia
- first_name: W
full_name: Kollatschny, W
last_name: Kollatschny
citation:
ama: den Brok JS, Cantalupo S, Mackenzie R, et al. Probing the AGN unification model
at redshift z ∼ 3 with MUSE observations of giant Lyα nebulae. Monthly Notices
of the Royal Astronomical Society. 2020;495(2):1874-1887. doi:10.1093/mnras/staa1269
apa: den Brok, J. S., Cantalupo, S., Mackenzie, R., Marino, R. A., Pezzulli, G.,
Matthee, J. J., … Kollatschny, W. (2020). Probing the AGN unification model at
redshift z ∼ 3 with MUSE observations of giant Lyα nebulae. Monthly Notices
of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/staa1269
chicago: den Brok, J S, S Cantalupo, R Mackenzie, R A Marino, G Pezzulli, Jorryt
J Matthee, S D Johnson, M Krumpe, T Urrutia, and W Kollatschny. “Probing the AGN
Unification Model at Redshift z ∼ 3 with MUSE Observations of Giant Lyα Nebulae.”
Monthly Notices of the Royal Astronomical Society. Oxford University Press,
2020. https://doi.org/10.1093/mnras/staa1269.
ieee: J. S. den Brok et al., “Probing the AGN unification model at redshift
z ∼ 3 with MUSE observations of giant Lyα nebulae,” Monthly Notices of the
Royal Astronomical Society, vol. 495, no. 2. Oxford University Press, pp.
1874–1887, 2020.
ista: den Brok JS, Cantalupo S, Mackenzie R, Marino RA, Pezzulli G, Matthee JJ,
Johnson SD, Krumpe M, Urrutia T, Kollatschny W. 2020. Probing the AGN unification
model at redshift z ∼ 3 with MUSE observations of giant Lyα nebulae. Monthly Notices
of the Royal Astronomical Society. 495(2), 1874–1887.
mla: den Brok, J. S., et al. “Probing the AGN Unification Model at Redshift z ∼
3 with MUSE Observations of Giant Lyα Nebulae.” Monthly Notices of the Royal
Astronomical Society, vol. 495, no. 2, Oxford University Press, 2020, pp.
1874–87, doi:10.1093/mnras/staa1269.
short: J.S. den Brok, S. Cantalupo, R. Mackenzie, R.A. Marino, G. Pezzulli, J.J.
Matthee, S.D. Johnson, M. Krumpe, T. Urrutia, W. Kollatschny, Monthly Notices
of the Royal Astronomical Society 495 (2020) 1874–1887.
date_created: 2022-07-07T10:40:17Z
date_published: 2020-06-01T00:00:00Z
date_updated: 2022-08-18T11:17:47Z
day: '01'
doi: 10.1093/mnras/staa1269
extern: '1'
external_id:
arxiv:
- '2005.01732'
intvolume: ' 495'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: active'
- 'galaxies: high-redshift'
- intergalactic medium
- 'quasars: emission lines'
- 'quasars: general'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2005.01732
month: '06'
oa: 1
oa_version: Preprint
page: 1874-1887
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Probing the AGN unification model at redshift z ∼ 3 with MUSE observations
of giant Lyα nebulae
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 495
year: '2020'
...
---
_id: '11539'
abstract:
- lang: eng
text: 'Despite recent progress in understanding Ly α emitters (LAEs), relatively
little is known regarding their typical black hole activity across cosmic time.
Here, we study the X-ray and radio properties of ∼4000 LAEs at 2.2 < z < 6 from
the SC4K survey in the COSMOS field. We detect 254 (6.8per cent±0.4per cent)
LAEs individually in the X-rays (S/N > 3) with an average luminosity of 1044.31±0.01ergs−1
and average black hole accretion rate (BHAR) of 0.72±0.01 M⊙ yr−1, consistent
with moderate to high accreting active galactic neuclei (AGNs). We detect 120
sources in deep radio data (radio AGN fraction of 3.2per cent±0.3per cent). The
global AGN fraction (8.6per cent±0.4per cent) rises with Ly α luminosity and
declines with increasing redshift. For X-ray-detected LAEs, Ly α luminosities
correlate with the BHARs, suggesting that Ly α luminosity becomes a BHAR indicator.
Most LAEs (93.1per cent±0.6per cent) at 2 < z < 6 have no detectable X-ray emission
(BHARs < 0.017 M⊙ yr−1). The median star formation rate (SFR) of star-forming
LAEs from Ly α and radio luminosities is 7.6+6.6−2.8 M⊙ yr−1. The black hole to
galaxy growth ratio (BHAR/SFR) for LAEs is <0.0022, consistent with typical star-forming
galaxies and the local BHAR/SFR relation. We conclude that LAEs at 2 < z < 6 include
two different populations: an AGN population, where Ly α luminosity traces BHAR,
and another with low SFRs which remain undetected in even the deepest X-ray stacks
but is detected in the radio stacks.'
acknowledgement: JM acknowledges the support of a Huygens PhD fellowship from Leiden
University. We thank Camila Correa for help analysing snipshot merger trees. We
thank the anonymous referee for constructive comments. We also thank Jarle Brinchmann,
Rob Crain, Antonios Katsianis, Paola Popesso, and David Sobral for discussions and
suggestions. We also thank the participants of the Lorentz Center workshop ‘A Decade
of the Star-Forming Main Sequence’ held on 2017 September 4–8, for discussions and
ideas. We have benefited from the public available programming language PYTHON,
including the NUMPY, MATPLOTLIB, and SCIPY (Hunter 2007) packages and the TOPCAT
analysis tool (Taylor 2013).
article_processing_charge: No
article_type: original
author:
- first_name: João
full_name: Calhau, João
last_name: Calhau
- first_name: David
full_name: Sobral, David
last_name: Sobral
- first_name: Sérgio
full_name: Santos, Sérgio
last_name: Santos
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: Ana
full_name: Paulino-Afonso, Ana
last_name: Paulino-Afonso
- first_name: Andra
full_name: Stroe, Andra
last_name: Stroe
- first_name: Brooke
full_name: Simmons, Brooke
last_name: Simmons
- first_name: Cassandra
full_name: Barlow-Hall, Cassandra
last_name: Barlow-Hall
- first_name: Benjamin
full_name: Adams, Benjamin
last_name: Adams
citation:
ama: 'Calhau J, Sobral D, Santos S, et al. The X-ray and radio activity of typical
and luminous Ly α emitters from z ∼ 2 to z ∼ 6: Evidence for a diverse, evolving
population. Monthly Notices of the Royal Astronomical Society. 2020;493(3):3341-3362.
doi:10.1093/mnras/staa476'
apa: 'Calhau, J., Sobral, D., Santos, S., Matthee, J. J., Paulino-Afonso, A., Stroe,
A., … Adams, B. (2020). The X-ray and radio activity of typical and luminous Ly α
emitters from z ∼ 2 to z ∼ 6: Evidence for a diverse, evolving population. Monthly
Notices of the Royal Astronomical Society. Oxford University Press. https://doi.org/10.1093/mnras/staa476'
chicago: 'Calhau, João, David Sobral, Sérgio Santos, Jorryt J Matthee, Ana Paulino-Afonso,
Andra Stroe, Brooke Simmons, Cassandra Barlow-Hall, and Benjamin Adams. “The X-Ray
and Radio Activity of Typical and Luminous Ly α Emitters from z ∼ 2 to z ∼ 6:
Evidence for a Diverse, Evolving Population.” Monthly Notices of the Royal
Astronomical Society. Oxford University Press, 2020. https://doi.org/10.1093/mnras/staa476.'
ieee: 'J. Calhau et al., “The X-ray and radio activity of typical and luminous
Ly α emitters from z ∼ 2 to z ∼ 6: Evidence for a diverse, evolving population,”
Monthly Notices of the Royal Astronomical Society, vol. 493, no. 3. Oxford
University Press, pp. 3341–3362, 2020.'
ista: 'Calhau J, Sobral D, Santos S, Matthee JJ, Paulino-Afonso A, Stroe A, Simmons
B, Barlow-Hall C, Adams B. 2020. The X-ray and radio activity of typical and luminous
Ly α emitters from z ∼ 2 to z ∼ 6: Evidence for a diverse, evolving population.
Monthly Notices of the Royal Astronomical Society. 493(3), 3341–3362.'
mla: 'Calhau, João, et al. “The X-Ray and Radio Activity of Typical and Luminous
Ly α Emitters from z ∼ 2 to z ∼ 6: Evidence for a Diverse, Evolving Population.”
Monthly Notices of the Royal Astronomical Society, vol. 493, no. 3, Oxford
University Press, 2020, pp. 3341–62, doi:10.1093/mnras/staa476.'
short: J. Calhau, D. Sobral, S. Santos, J.J. Matthee, A. Paulino-Afonso, A. Stroe,
B. Simmons, C. Barlow-Hall, B. Adams, Monthly Notices of the Royal Astronomical
Society 493 (2020) 3341–3362.
date_created: 2022-07-08T07:34:10Z
date_published: 2020-04-01T00:00:00Z
date_updated: 2022-08-18T11:25:31Z
day: '01'
doi: 10.1093/mnras/staa476
extern: '1'
external_id:
arxiv:
- '1909.11672'
intvolume: ' 493'
issue: '3'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
- 'galaxies: active'
- 'galaxies: evolution'
- 'galaxies: high-redshift'
- 'quasars: supermassive black holes'
- 'galaxies: star formation'
- 'cosmology: observations'
- 'X-rays: galaxies'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1909.11672
month: '04'
oa: 1
oa_version: Preprint
page: 3341-3362
publication: Monthly Notices of the Royal Astronomical Society
publication_identifier:
eissn:
- 1365-2966
issn:
- 0035-8711
publication_status: published
publisher: Oxford University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The X-ray and radio activity of typical and luminous Ly α emitters from z
∼ 2 to z ∼ 6: Evidence for a diverse, evolving population'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 493
year: '2020'
...
---
_id: '11586'
abstract:
- lang: eng
text: Distant luminous Lyman-α emitters are excellent targets for detailed observations
of galaxies in the epoch of reionisation. Spatially resolved observations of these
galaxies allow us to simultaneously probe the emission from young stars, partially
ionised gas in the interstellar medium and to constrain the properties of the
surrounding hydrogen in the circumgalactic medium. We review recent results from
(spectroscopic) follow-up studies of the rest-frame UV, Lyman-α and [CII] emission
in luminous galaxies observed ∼500 Myr after the Big Bang with ALMA, HST/WFC3
and VLT/X-SHOOTER. These galaxies likely reside in early ionised bubbles and are
complex systems, consisting of multiple well separated and resolved components
where traces of metals are already present.
article_processing_charge: No
author:
- first_name: Jorryt J
full_name: Matthee, Jorryt J
id: 7439a258-f3c0-11ec-9501-9df22fe06720
last_name: Matthee
orcid: 0000-0003-2871-127X
- first_name: David
full_name: Sobral, David
last_name: Sobral
citation:
ama: 'Matthee JJ, Sobral D. Unveiling the most luminous Lyman-α emitters in the
epoch of reionisation. In: Proceedings of the International Astronomical Union.
Vol 15. Cambridge University Press; 2020:21-25. doi:10.1017/s1743921319009451'
apa: Matthee, J. J., & Sobral, D. (2020). Unveiling the most luminous Lyman-α
emitters in the epoch of reionisation. In Proceedings of the International
Astronomical Union (Vol. 15, pp. 21–25). Cambridge University Press. https://doi.org/10.1017/s1743921319009451
chicago: Matthee, Jorryt J, and David Sobral. “Unveiling the Most Luminous Lyman-α
Emitters in the Epoch of Reionisation.” In Proceedings of the International
Astronomical Union, 15:21–25. Cambridge University Press, 2020. https://doi.org/10.1017/s1743921319009451.
ieee: J. J. Matthee and D. Sobral, “Unveiling the most luminous Lyman-α emitters
in the epoch of reionisation,” in Proceedings of the International Astronomical
Union, 2020, vol. 15, no. S352, pp. 21–25.
ista: Matthee JJ, Sobral D. 2020. Unveiling the most luminous Lyman-α emitters in
the epoch of reionisation. Proceedings of the International Astronomical Union.
vol. 15, 21–25.
mla: Matthee, Jorryt J., and David Sobral. “Unveiling the Most Luminous Lyman-α
Emitters in the Epoch of Reionisation.” Proceedings of the International Astronomical
Union, vol. 15, no. S352, Cambridge University Press, 2020, pp. 21–25, doi:10.1017/s1743921319009451.
short: J.J. Matthee, D. Sobral, in:, Proceedings of the International Astronomical
Union, Cambridge University Press, 2020, pp. 21–25.
date_created: 2022-07-14T14:08:41Z
date_published: 2020-06-04T00:00:00Z
date_updated: 2022-08-19T08:41:12Z
day: '04'
doi: 10.1017/s1743921319009451
extern: '1'
external_id:
arxiv:
- '1911.04774'
intvolume: ' 15'
issue: S352
keyword:
- Astronomy and Astrophysics
- Space and Planetary Science
- 'galaxies: formation'
- 'galaxies: evolution'
- 'galaxies: high-redshift'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1911.04774
month: '06'
oa: 1
oa_version: Preprint
page: 21-25
publication: Proceedings of the International Astronomical Union
publication_identifier:
eissn:
- 1743-9221
issn:
- 1743-9213
publication_status: published
publisher: Cambridge University Press
quality_controlled: '1'
scopus_import: '1'
status: public
title: Unveiling the most luminous Lyman-α emitters in the epoch of reionisation
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 15
year: '2020'
...
---
_id: '11610'
abstract:
- lang: eng
text: Studies of Galactic structure and evolution have benefited enormously from
Gaia kinematic information, though additional, intrinsic stellar parameters like
age are required to best constrain Galactic models. Asteroseismology is the most
precise method of providing such information for field star populations en masse,
but existing samples for the most part have been limited to a few narrow fields
of view by the CoRoT and Kepler missions. In an effort to provide well-characterized
stellar parameters across a wide range in Galactic position, we present the second
data release of red giant asteroseismic parameters for the K2 Galactic Archaeology
Program (GAP). We provide ${\nu }_{\max }$ and ${\rm{\Delta }}\nu $ based on six
independent pipeline analyses; first-ascent red giant branch (RGB) and red clump
(RC) evolutionary state classifications from machine learning; and ready-to-use
radius and mass coefficients, κR and κM, which, when appropriately multiplied
by a solar-scaled effective temperature factor, yield physical stellar radii and
masses. In total, we report 4395 radius and mass coefficients, with typical uncertainties
of 3.3% (stat.) ± 1% (syst.) for κR and 7.7% (stat.) ± 2% (syst.) for κM among
RGB stars, and 5.0% (stat.) ± 1% (syst.) for κR and 10.5% (stat.) ± 2% (syst.)
for κM among RC stars. We verify that the sample is nearly complete—except for
a dearth of stars with ${\nu }_{\max }\lesssim 10\mbox{--}20\,\mu \mathrm{Hz}$—by
comparing to Galactic models and visual inspection. Our asteroseismic radii agree
with radii derived from Gaia Data Release 2 parallaxes to within 2.2% ± 0.3% for
RGB stars and 2.0% ± 0.6% for RC stars.
acknowledgement: "We thank the referee for comments that strengthened the manuscript.
J. C. Z. and M. H. P. acknowledge support from NASA grants 80NSSC18K0391 and NNX17AJ40G.
Y. E. and C. J. acknowledge the support of the UK Science and Technology Facilities
Council (STFC). S. M. would like to acknowledge support from the Spanish Ministry
with the Ramon y Cajal fellowship number RYC-2015-17697. R. A. G. acknowledges funding
received from the PLATO CNES grant. R. S. acknowledges funding via a Royal Society
University Research Fellowship. D.H. acknowledges support from the Alfred P. Sloan
Foundation and the National Aeronautics and Space Administration (80NSSC19K0108).
V.S.A. acknowledges support from the Independent Research Fund Denmark (Research
grant 7027-00096B), and the Carlsberg foundation (grant agreement CF19-0649). This
research was supported in part by the National Science Foundation under grant No.
NSF PHY-1748958.\r\n\r\nFunding for the Stellar Astrophysics Centre (SAC) is provided
by The Danish National Research Foundation (grant agreement No. DNRF106).\r\n\r\nThe
K2 Galactic Archaeology Program is supported by the National Aeronautics and Space
Administration under grant NNX16AJ17G issued through the K2 Guest Observer Program.\r\n\r\nThis
publication makes use of data products from the Two Micron All Sky Survey, which
is a joint project of the University of Massachusetts and the Infrared Processing
and Analysis Center/California Institute of Technology, funded by the National Aeronautics
and Space Administration and the National Science Foundation.\r\n\r\nThis work has
made use of data from the European Space Agency (ESA) mission Gaia (https://www.cosmos.esa.int/gaia),
processed by the Gaia Data Processing and Analysis Consortium (DPAC, https://www.cosmos.esa.int/web/gaia/dpac/consortium).
Funding for the DPAC has been provided by national institutions, in particular the
institutions participating in the Gaia Multilateral Agreement.\r\n\r\nFunding for
the Sloan Digital Sky Survey IV has been provided by the Alfred P. Sloan Foundation,
the U.S. Department of Energy Office of Science, and the Participating Institutions.
SDSS-IV acknowledges support and resources from the Center for High Performance
Computing at the University of Utah. The SDSS website is www.sdss.org.\r\n\r\nSDSS-IV
is managed by the Astrophysical Research Consortium for the Participating Institutions
of the SDSS Collaboration, including the Brazilian Participation Group, the Carnegie
Institution for Science, Carnegie Mellon University, the Chilean Participation Group,
the French Participation Group, the Harvard–Smithsonian Center for Astrophysics,
Instituto de Astrofísica de Canarias, The Johns Hopkins University, Kavli Institute
for the Physics and Mathematics of the Universe (IPMU)/University of Tokyo, the
Korean Participation Group, Lawrence Berkeley National Laboratory, Leibniz Institut
für Astrophysik Potsdam (AIP), Max-Planck-Institut für Astronomie (MPIA Heidelberg),
Max-Planck-Institut für Astrophysik (MPA Garching), Max-Planck-Institut für Extraterrestrische
Physik (MPE), National Astronomical Observatories of China, New Mexico State University,
New York University, University of Notre Dame, Observatário Nacional/MCTI, The Ohio
State University, Pennsylvania State University, Shanghai Astronomical Observatory,
United Kingdom Participation Group, Universidad Nacional Autónoma de México, University
of Arizona, University of Colorado Boulder, University of Oxford, University of
Portsmouth, University of Utah, University of Virginia, University of Washington,
University of Wisconsin, Vanderbilt University, and Yale University.\r\n\r\nSoftware:
asfgrid (Sharma & Stello 2016), emcee (Foreman-Mackey et al. 2013), NumPy (Walt
2011), pandas (McKinney 2010; Reback et al. 2020), Matplotlib (Hunter 2007), IPython
(Pérez & Granger 2007), SciPy (Virtanen et al. 2020)."
article_number: '23'
article_processing_charge: No
article_type: original
author:
- first_name: Joel C.
full_name: Zinn, Joel C.
last_name: Zinn
- first_name: Dennis
full_name: Stello, Dennis
last_name: Stello
- first_name: Yvonne
full_name: Elsworth, Yvonne
last_name: Elsworth
- first_name: Rafael A.
full_name: García, Rafael A.
last_name: García
- first_name: Thomas
full_name: Kallinger, Thomas
last_name: Kallinger
- first_name: Savita
full_name: Mathur, Savita
last_name: Mathur
- first_name: Benoît
full_name: Mosser, Benoît
last_name: Mosser
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: Caitlin
full_name: Jones, Caitlin
last_name: Jones
- first_name: Marc
full_name: Hon, Marc
last_name: Hon
- first_name: Sanjib
full_name: Sharma, Sanjib
last_name: Sharma
- first_name: Ralph
full_name: Schönrich, Ralph
last_name: Schönrich
- first_name: Jack T.
full_name: Warfield, Jack T.
last_name: Warfield
- first_name: Rodrigo
full_name: Luger, Rodrigo
last_name: Luger
- first_name: Marc H.
full_name: Pinsonneault, Marc H.
last_name: Pinsonneault
- first_name: Jennifer A.
full_name: Johnson, Jennifer A.
last_name: Johnson
- first_name: Daniel
full_name: Huber, Daniel
last_name: Huber
- first_name: Victor Silva
full_name: Aguirre, Victor Silva
last_name: Aguirre
- first_name: William J.
full_name: Chaplin, William J.
last_name: Chaplin
- first_name: Guy R.
full_name: Davies, Guy R.
last_name: Davies
- first_name: Andrea
full_name: Miglio, Andrea
last_name: Miglio
citation:
ama: 'Zinn JC, Stello D, Elsworth Y, et al. The K2 galactic archaeology program
data release 2: Asteroseismic results from campaigns 4, 6, and 7. The Astrophysical
Journal Supplement Series. 2020;251(2). doi:10.3847/1538-4365/abbee3'
apa: 'Zinn, J. C., Stello, D., Elsworth, Y., García, R. A., Kallinger, T., Mathur,
S., … Miglio, A. (2020). The K2 galactic archaeology program data release 2: Asteroseismic
results from campaigns 4, 6, and 7. The Astrophysical Journal Supplement Series.
IOP Publishing. https://doi.org/10.3847/1538-4365/abbee3'
chicago: 'Zinn, Joel C., Dennis Stello, Yvonne Elsworth, Rafael A. García, Thomas
Kallinger, Savita Mathur, Benoît Mosser, et al. “The K2 Galactic Archaeology Program
Data Release 2: Asteroseismic Results from Campaigns 4, 6, and 7.” The Astrophysical
Journal Supplement Series. IOP Publishing, 2020. https://doi.org/10.3847/1538-4365/abbee3.'
ieee: 'J. C. Zinn et al., “The K2 galactic archaeology program data release
2: Asteroseismic results from campaigns 4, 6, and 7,” The Astrophysical Journal
Supplement Series, vol. 251, no. 2. IOP Publishing, 2020.'
ista: 'Zinn JC, Stello D, Elsworth Y, García RA, Kallinger T, Mathur S, Mosser B,
Bugnet LA, Jones C, Hon M, Sharma S, Schönrich R, Warfield JT, Luger R, Pinsonneault
MH, Johnson JA, Huber D, Aguirre VS, Chaplin WJ, Davies GR, Miglio A. 2020. The
K2 galactic archaeology program data release 2: Asteroseismic results from campaigns
4, 6, and 7. The Astrophysical Journal Supplement Series. 251(2), 23.'
mla: 'Zinn, Joel C., et al. “The K2 Galactic Archaeology Program Data Release 2:
Asteroseismic Results from Campaigns 4, 6, and 7.” The Astrophysical Journal
Supplement Series, vol. 251, no. 2, 23, IOP Publishing, 2020, doi:10.3847/1538-4365/abbee3.'
short: J.C. Zinn, D. Stello, Y. Elsworth, R.A. García, T. Kallinger, S. Mathur,
B. Mosser, L.A. Bugnet, C. Jones, M. Hon, S. Sharma, R. Schönrich, J.T. Warfield,
R. Luger, M.H. Pinsonneault, J.A. Johnson, D. Huber, V.S. Aguirre, W.J. Chaplin,
G.R. Davies, A. Miglio, The Astrophysical Journal Supplement Series 251 (2020).
date_created: 2022-07-18T13:27:26Z
date_published: 2020-12-01T00:00:00Z
date_updated: 2022-08-22T07:04:45Z
day: '01'
doi: 10.3847/1538-4365/abbee3
extern: '1'
external_id:
arxiv:
- '2012.04051'
intvolume: ' 251'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2012.04051
month: '12'
oa: 1
oa_version: Preprint
publication: The Astrophysical Journal Supplement Series
publication_identifier:
eissn:
- 1538-4365
issn:
- 0067-0049
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'The K2 galactic archaeology program data release 2: Asteroseismic results
from campaigns 4, 6, and 7'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 251
year: '2020'
...
---
_id: '11611'
abstract:
- lang: eng
text: Over the course of its history, the Milky Way has ingested multiple smaller
satellite galaxies1. Although these accreted stellar populations can be forensically
identified as kinematically distinct structures within the Galaxy, it is difficult
in general to date precisely the age at which any one merger occurred. Recent
results have revealed a population of stars that were accreted via the collision
of a dwarf galaxy, called Gaia–Enceladus1, leading to substantial pollution of
the chemical and dynamical properties of the Milky Way. Here we identify the very
bright, naked-eye star ν Indi as an indicator of the age of the early in situ
population of the Galaxy. We combine asteroseismic, spectroscopic, astrometric
and kinematic observations to show that this metal-poor, alpha-element-rich star
was an indigenous member of the halo, and we measure its age to be 11.0±0.7 (stat)
±0.8 (sys) billion years. The star bears hallmarks consistent with having been
kinematically heated by the Gaia–Enceladus collision. Its age implies that the
earliest the merger could have begun was 11.6 and 13.2 billion years ago, at 68%
and 95% confidence, respectively. Computations based on hierarchical cosmological
models slightly reduce the above limits.
acknowledgement: This paper includes data collected by the TESS mission, which are
publicly available from the Mikulski Archive for Space Telescopes (MAST). Resources
supporting this work were provided by the NASA High-End Computing (HEC) Program
through the NASA Advanced Supercomputing (NAS) Division at Ames Research Center
for the production of the SPOC data products. W.J.C. acknowledges support from the
UK Science and Technology Facilities Council (STFC) and UK Space Agency. Funding
for the Stellar Astrophysics Centre is provided by The Danish National Research
Foundation (grant agreement number DNRF106). This research was partially conducted
during the Exostar19 programme at the Kavli Institute for Theoretical Physics at
UC Santa Barbara, which was supported in part by the National Science Foundation
under grant number NSF PHY-1748958. A.M., J.T.M., F.V. and J.M. acknowledge support
from the ERC Consolidator Grant funding scheme (project ASTEROCHRONOMETRY, grant
agreement number 772293). F.V. acknowledges the support of a Fellowship from the
Center for Cosmology and AstroParticle Physics at The Ohio State University. W.H.B.
and M.B.N. acknowledge support from the UK Space Agency. K.J.B. is supported by
the National Science Foundation under award AST-1903828. M.B.N. acknowledges partial
support from the NYU Abu Dhabi Center for Space Science under grant number G1502.
A.M.S. is partially supported by the Spanish Government (ESP2017-82674-R) and Generalitat
de Catalunya (2017-SGR-1131). T.M. acknowledges financial support from Belspo for
contract PRODEX PLATO. H.K. acknowledges support from the European Social Fund via
the Lithuanian Science Council grant number 09.3.3-LMT-K-712-01-0103. S.B. acknowledges
support from NSF grant AST-1514676 and NASA grant 80NSSC19K0374. V.S.A. acknowledges
support from the Independent Research Fund Denmark (research grant 7027-00096B).
D.H. acknowledges support by the National Aeronautics and Space Administration (80NSSC18K1585,
80NSSC19K0379) awarded through the TESS Guest Investigator Program and by the National
Science Foundation (AST-1717000). T.S.M. acknowledges support from a visiting fellowship
at the Max Planck Institute for Solar System Research. Computational resources were
provided through XSEDE allocation TG-AST090107. D.L.B. acknowledges support from
NASA under grant NNX16AB76G. T.L.C. acknowledges support from the European Union’s
Horizon 2020 research and innovation programme under the Marie Skłodowska-Curie
grant agreement number 792848 (PULSATION). This work was supported by FCT/MCTES
through national funds (PIDDAC) by means of grant UID/FIS/04434/2019. K.J.B., S.H.,
J.S.K. and N.T. are supported by the European Research Council under the European
Community’s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement number
338251 (StellarAges). E.C. is funded by the European Union’s Horizon 2020 research
and innovation program under the Marie Sklodowska-Curie grant agreement number 664931.
L.G.-C. acknowledges support from the MINECO FPI-SO doctoral research project SEV-2015-0548-17-2
and predoctoral contract BES-2017-082610. P.G. is supported by the German space
agency (Deutsches Zentrum für Luft- und Raumfahrt) under PLATO data grant 50OO1501.
R.K. acknowledges support from the UK Science and Technology Facilities Council
(STFC), under consolidated grant ST/L000733/1. M.S.L. is supported by the Carlsberg
Foundation (grant agreement number CF17-076). Z.C.O., S.O. and M.Y. acknowledge
support from the Scientific and Technological Research Council of Turkey (TÜBİTAK:118F352).
S.M. acknowledges support from the Spanish ministry through the Ramon y Cajal fellowship
number RYC-2015-17697. T.S.R. acknowledges financial support from Premiale 2015
MITiC (PI B. Garilli). R.Sz. acknowledges the support from NKFIH grant project No.
K-115709, and the Lendület program of the Hungarian Academy of Science (project
number 2018-7/2019). J.T. acknowledges support was provided by NASA through the
NASA Hubble Fellowship grant number 51424 awarded by the Space Telescope Science
Institute, which is operated by the Association of Universities for Research in
Astronomy, Inc., for NASA, under contract NAS5-26555. This work was supported by
FEDER through COMPETE2020 (POCI-01-0145-FEDER-030389. A.M.B. acknowledges funding
from the European Union’s Horizon 2020 research and innovation program under the
Marie Sklodowska-Curie grant agreement No 749962 (project THOT). A.M. and P.R. acknowledge
the support of the Government of India, Department of Atomic Energy, under Project
No. 12-R&D-TFR-6.04-0600. K.J.B. is an NSF Astronomy and Astrophysics Postdoctoral
Fellow and DIRAC Fellow.
article_processing_charge: No
article_type: letter_note
author:
- first_name: William J.
full_name: Chaplin, William J.
last_name: Chaplin
- first_name: Aldo M.
full_name: Serenelli, Aldo M.
last_name: Serenelli
- first_name: Andrea
full_name: Miglio, Andrea
last_name: Miglio
- first_name: Thierry
full_name: Morel, Thierry
last_name: Morel
- first_name: J. Ted
full_name: Mackereth, J. Ted
last_name: Mackereth
- first_name: Fiorenzo
full_name: Vincenzo, Fiorenzo
last_name: Vincenzo
- first_name: Hans
full_name: Kjeldsen, Hans
last_name: Kjeldsen
- first_name: Sarbani
full_name: Basu, Sarbani
last_name: Basu
- first_name: Warrick H.
full_name: Ball, Warrick H.
last_name: Ball
- first_name: Amalie
full_name: Stokholm, Amalie
last_name: Stokholm
- first_name: Kuldeep
full_name: Verma, Kuldeep
last_name: Verma
- first_name: Jakob Rørsted
full_name: Mosumgaard, Jakob Rørsted
last_name: Mosumgaard
- first_name: Victor
full_name: Silva Aguirre, Victor
last_name: Silva Aguirre
- first_name: Anwesh
full_name: Mazumdar, Anwesh
last_name: Mazumdar
- first_name: Pritesh
full_name: Ranadive, Pritesh
last_name: Ranadive
- first_name: H. M.
full_name: Antia, H. M.
last_name: Antia
- first_name: Yveline
full_name: Lebreton, Yveline
last_name: Lebreton
- first_name: Joel
full_name: Ong, Joel
last_name: Ong
- first_name: Thierry
full_name: Appourchaux, Thierry
last_name: Appourchaux
- first_name: Timothy R.
full_name: Bedding, Timothy R.
last_name: Bedding
- first_name: Jørgen
full_name: Christensen-Dalsgaard, Jørgen
last_name: Christensen-Dalsgaard
- first_name: Orlagh
full_name: Creevey, Orlagh
last_name: Creevey
- first_name: Rafael A.
full_name: García, Rafael A.
last_name: García
- first_name: Rasmus
full_name: Handberg, Rasmus
last_name: Handberg
- first_name: Daniel
full_name: Huber, Daniel
last_name: Huber
- first_name: Steven D.
full_name: Kawaler, Steven D.
last_name: Kawaler
- first_name: Mikkel N.
full_name: Lund, Mikkel N.
last_name: Lund
- first_name: Travis S.
full_name: Metcalfe, Travis S.
last_name: Metcalfe
- first_name: Keivan G.
full_name: Stassun, Keivan G.
last_name: Stassun
- first_name: Michäel
full_name: Bazot, Michäel
last_name: Bazot
- first_name: Paul G.
full_name: Beck, Paul G.
last_name: Beck
- first_name: Keaton J.
full_name: Bell, Keaton J.
last_name: Bell
- first_name: Maria
full_name: Bergemann, Maria
last_name: Bergemann
- first_name: Derek L.
full_name: Buzasi, Derek L.
last_name: Buzasi
- first_name: Othman
full_name: Benomar, Othman
last_name: Benomar
- first_name: Diego
full_name: Bossini, Diego
last_name: Bossini
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: Tiago L.
full_name: Campante, Tiago L.
last_name: Campante
- first_name: Zeynep Çelik
full_name: Orhan, Zeynep Çelik
last_name: Orhan
- first_name: Enrico
full_name: Corsaro, Enrico
last_name: Corsaro
- first_name: Lucía
full_name: González-Cuesta, Lucía
last_name: González-Cuesta
- first_name: Guy R.
full_name: Davies, Guy R.
last_name: Davies
- first_name: Maria Pia
full_name: Di Mauro, Maria Pia
last_name: Di Mauro
- first_name: Ricky
full_name: Egeland, Ricky
last_name: Egeland
- first_name: Yvonne P.
full_name: Elsworth, Yvonne P.
last_name: Elsworth
- first_name: Patrick
full_name: Gaulme, Patrick
last_name: Gaulme
- first_name: Hamed
full_name: Ghasemi, Hamed
last_name: Ghasemi
- first_name: Zhao
full_name: Guo, Zhao
last_name: Guo
- first_name: Oliver J.
full_name: Hall, Oliver J.
last_name: Hall
- first_name: Amir
full_name: Hasanzadeh, Amir
last_name: Hasanzadeh
- first_name: Saskia
full_name: Hekker, Saskia
last_name: Hekker
- first_name: Rachel
full_name: Howe, Rachel
last_name: Howe
- first_name: Jon M.
full_name: Jenkins, Jon M.
last_name: Jenkins
- first_name: Antonio
full_name: Jiménez, Antonio
last_name: Jiménez
- first_name: René
full_name: Kiefer, René
last_name: Kiefer
- first_name: James S.
full_name: Kuszlewicz, James S.
last_name: Kuszlewicz
- first_name: Thomas
full_name: Kallinger, Thomas
last_name: Kallinger
- first_name: David W.
full_name: Latham, David W.
last_name: Latham
- first_name: Mia S.
full_name: Lundkvist, Mia S.
last_name: Lundkvist
- first_name: Savita
full_name: Mathur, Savita
last_name: Mathur
- first_name: Josefina
full_name: Montalbán, Josefina
last_name: Montalbán
- first_name: Benoit
full_name: Mosser, Benoit
last_name: Mosser
- first_name: Andres Moya
full_name: Bedón, Andres Moya
last_name: Bedón
- first_name: Martin Bo
full_name: Nielsen, Martin Bo
last_name: Nielsen
- first_name: Sibel
full_name: Örtel, Sibel
last_name: Örtel
- first_name: Ben M.
full_name: Rendle, Ben M.
last_name: Rendle
- first_name: George R.
full_name: Ricker, George R.
last_name: Ricker
- first_name: Thaíse S.
full_name: Rodrigues, Thaíse S.
last_name: Rodrigues
- first_name: Ian W.
full_name: Roxburgh, Ian W.
last_name: Roxburgh
- first_name: Hossein
full_name: Safari, Hossein
last_name: Safari
- first_name: Mathew
full_name: Schofield, Mathew
last_name: Schofield
- first_name: Sara
full_name: Seager, Sara
last_name: Seager
- first_name: Barry
full_name: Smalley, Barry
last_name: Smalley
- first_name: Dennis
full_name: Stello, Dennis
last_name: Stello
- first_name: Róbert
full_name: Szabó, Róbert
last_name: Szabó
- first_name: Jamie
full_name: Tayar, Jamie
last_name: Tayar
- first_name: Nathalie
full_name: Themeßl, Nathalie
last_name: Themeßl
- first_name: Alexandra E. L.
full_name: Thomas, Alexandra E. L.
last_name: Thomas
- first_name: Roland K.
full_name: Vanderspek, Roland K.
last_name: Vanderspek
- first_name: Walter E.
full_name: van Rossem, Walter E.
last_name: van Rossem
- first_name: Mathieu
full_name: Vrard, Mathieu
last_name: Vrard
- first_name: Achim
full_name: Weiss, Achim
last_name: Weiss
- first_name: Timothy R.
full_name: White, Timothy R.
last_name: White
- first_name: Joshua N.
full_name: Winn, Joshua N.
last_name: Winn
- first_name: Mutlu
full_name: Yıldız, Mutlu
last_name: Yıldız
citation:
ama: Chaplin WJ, Serenelli AM, Miglio A, et al. Age dating of an early Milky Way
merger via asteroseismology of the naked-eye star ν Indi. Nature Astronomy.
2020;4(4):382-389. doi:10.1038/s41550-019-0975-9
apa: Chaplin, W. J., Serenelli, A. M., Miglio, A., Morel, T., Mackereth, J. T.,
Vincenzo, F., … Yıldız, M. (2020). Age dating of an early Milky Way merger via
asteroseismology of the naked-eye star ν Indi. Nature Astronomy. Springer
Nature. https://doi.org/10.1038/s41550-019-0975-9
chicago: Chaplin, William J., Aldo M. Serenelli, Andrea Miglio, Thierry Morel, J.
Ted Mackereth, Fiorenzo Vincenzo, Hans Kjeldsen, et al. “Age Dating of an Early
Milky Way Merger via Asteroseismology of the Naked-Eye Star ν Indi.” Nature
Astronomy. Springer Nature, 2020. https://doi.org/10.1038/s41550-019-0975-9.
ieee: W. J. Chaplin et al., “Age dating of an early Milky Way merger via
asteroseismology of the naked-eye star ν Indi,” Nature Astronomy, vol.
4, no. 4. Springer Nature, pp. 382–389, 2020.
ista: Chaplin WJ, Serenelli AM, Miglio A, Morel T, Mackereth JT, Vincenzo F, Kjeldsen
H, Basu S, Ball WH, Stokholm A, Verma K, Mosumgaard JR, Silva Aguirre V, Mazumdar
A, Ranadive P, Antia HM, Lebreton Y, Ong J, Appourchaux T, Bedding TR, Christensen-Dalsgaard
J, Creevey O, García RA, Handberg R, Huber D, Kawaler SD, Lund MN, Metcalfe TS,
Stassun KG, Bazot M, Beck PG, Bell KJ, Bergemann M, Buzasi DL, Benomar O, Bossini
D, Bugnet LA, Campante TL, Orhan ZÇ, Corsaro E, González-Cuesta L, Davies GR,
Di Mauro MP, Egeland R, Elsworth YP, Gaulme P, Ghasemi H, Guo Z, Hall OJ, Hasanzadeh
A, Hekker S, Howe R, Jenkins JM, Jiménez A, Kiefer R, Kuszlewicz JS, Kallinger
T, Latham DW, Lundkvist MS, Mathur S, Montalbán J, Mosser B, Bedón AM, Nielsen
MB, Örtel S, Rendle BM, Ricker GR, Rodrigues TS, Roxburgh IW, Safari H, Schofield
M, Seager S, Smalley B, Stello D, Szabó R, Tayar J, Themeßl N, Thomas AEL, Vanderspek
RK, van Rossem WE, Vrard M, Weiss A, White TR, Winn JN, Yıldız M. 2020. Age dating
of an early Milky Way merger via asteroseismology of the naked-eye star ν Indi.
Nature Astronomy. 4(4), 382–389.
mla: Chaplin, William J., et al. “Age Dating of an Early Milky Way Merger via Asteroseismology
of the Naked-Eye Star ν Indi.” Nature Astronomy, vol. 4, no. 4, Springer
Nature, 2020, pp. 382–89, doi:10.1038/s41550-019-0975-9.
short: W.J. Chaplin, A.M. Serenelli, A. Miglio, T. Morel, J.T. Mackereth, F. Vincenzo,
H. Kjeldsen, S. Basu, W.H. Ball, A. Stokholm, K. Verma, J.R. Mosumgaard, V. Silva
Aguirre, A. Mazumdar, P. Ranadive, H.M. Antia, Y. Lebreton, J. Ong, T. Appourchaux,
T.R. Bedding, J. Christensen-Dalsgaard, O. Creevey, R.A. García, R. Handberg,
D. Huber, S.D. Kawaler, M.N. Lund, T.S. Metcalfe, K.G. Stassun, M. Bazot, P.G.
Beck, K.J. Bell, M. Bergemann, D.L. Buzasi, O. Benomar, D. Bossini, L.A. Bugnet,
T.L. Campante, Z.Ç. Orhan, E. Corsaro, L. González-Cuesta, G.R. Davies, M.P. Di
Mauro, R. Egeland, Y.P. Elsworth, P. Gaulme, H. Ghasemi, Z. Guo, O.J. Hall, A.
Hasanzadeh, S. Hekker, R. Howe, J.M. Jenkins, A. Jiménez, R. Kiefer, J.S. Kuszlewicz,
T. Kallinger, D.W. Latham, M.S. Lundkvist, S. Mathur, J. Montalbán, B. Mosser,
A.M. Bedón, M.B. Nielsen, S. Örtel, B.M. Rendle, G.R. Ricker, T.S. Rodrigues,
I.W. Roxburgh, H. Safari, M. Schofield, S. Seager, B. Smalley, D. Stello, R. Szabó,
J. Tayar, N. Themeßl, A.E.L. Thomas, R.K. Vanderspek, W.E. van Rossem, M. Vrard,
A. Weiss, T.R. White, J.N. Winn, M. Yıldız, Nature Astronomy 4 (2020) 382–389.
date_created: 2022-07-18T13:36:19Z
date_published: 2020-04-01T00:00:00Z
date_updated: 2022-08-22T07:08:29Z
day: '01'
doi: 10.1038/s41550-019-0975-9
extern: '1'
external_id:
arxiv:
- '2001.04653'
intvolume: ' 4'
issue: '4'
keyword:
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2001.04653
month: '04'
oa: 1
oa_version: Preprint
page: 382-389
publication: Nature Astronomy
publication_identifier:
eissn:
- 2397-3366
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Age dating of an early Milky Way merger via asteroseismology of the naked-eye
star ν Indi
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 4
year: '2020'
...
---
_id: '11612'
abstract:
- lang: eng
text: Since the onset of the "space revolution" of high-precision high-cadence photometry,
asteroseismology has been demonstrated as a powerful tool for informing Galactic
archeology investigations. The launch of the NASA Transiting Exoplanet Survey
Satellite (TESS) mission has enabled seismic-based inferences to go full sky—providing
a clear advantage for large ensemble studies of the different Milky Way components.
Here we demonstrate its potential for investigating the Galaxy by carrying out
the first asteroseismic ensemble study of red giant stars observed by TESS. We
use a sample of 25 stars for which we measure their global asteroseimic observables
and estimate their fundamental stellar properties, such as radius, mass, and age.
Significant improvements are seen in the uncertainties of our estimates when combining
seismic observables from TESS with astrometric measurements from the Gaia mission
compared to when the seismology and astrometry are applied separately. Specifically,
when combined we show that stellar radii can be determined to a precision of a
few percent, masses to 5%–10%, and ages to the 20% level. This is comparable to
the precision typically obtained using end-of-mission Kepler data.
acknowledgement: 'This Letter includes data collected by the TESS mission, which are
publicly available from the Mikulski Archive for Space Telescopes (MAST). Funding
for the TESS mission is provided by NASA''s Science Mission directorate. Funding
for the TESS Asteroseismic Science Operations Centre is provided by the Danish National
Research Foundation (grant agreement No. DNRF106), ESA PRODEX (PEA 4000119301),
and Stellar Astrophysics Centre (SAC) at Aarhus University. V.S.A. acknowledges
support from the Independent Research Fund Denmark (Research grant 7027-00096B).
D.B. is supported in the form of work contract FCT/MCTES through national funds
and by FEDER through COMPETE2020 in connection to these grants: UID/FIS/04434/2019;
PTDC/FIS-AST/30389/2017 & POCI-01-0145-FEDER-030389. L.B., R.A.G., and B.M. acknowledge
the support from the CNES/PLATO grant. D.B. acknowledges NASA grant NNX16AB76G.
T.L.C. acknowledges support from the European Union''s Horizon 2020 research and
innovation programme under the Marie Skłodowska-Curie grant agreement No. 792848
(PULSATION). This work was supported by FCT/MCTES through national funds (UID/FIS/04434/2019).
E.C. is funded by the European Union''s Horizon 2020 research and innovation program
under the Marie Skłodowska-Curie grant agreement No. 664931. R.H. and M.N.L. acknowledge
the support of the ESA PRODEX programme. T.S.R. acknowledges financial support from
Premiale 2015 MITiC (PI B. Garilli). K.J.B. is supported by the National Science
Foundation under Award AST-1903828. M.S.L. is supported by the Carlsberg Foundation
(grant agreement No. CF17-0760). M.C. is funded by FCT//MCTES through national funds
and by FEDER through COMPETE2020 through these grants: UID/FIS/04434/2019, PTDC/FIS-AST/30389/2017
& POCI-01-0145-FEDER-030389, CEECIND/02619/2017. The research leading to the presented
results has received funding from the European Research Council under the European
Community''s Seventh Framework Programme (FP7/2007-2013)/ERC grant agreement no
338251 (StellarAges). A.M. acknowledges support from the European Research Council
Consolidator Grant funding scheme (project ASTEROCHRONOMETRY, grant agreement No.
772293, http://www.asterochronometry.eu). A.M.S. is partially supported by MINECO
grant ESP2017-82674-R. J.C.S. acknowledges funding support from Spanish public funds
for research under projects ESP2017-87676-2-2, and from project RYC-2012-09913 under
the ''Ramón y Cajal'' program of the Spanish Ministry of Science and Education.
Resources supporting this work were provided by the NASA High-End Computing (HEC)
Program through the NASA Advanced Supercomputing (NAS) Division at Ames Research
Center for the production of the SPOC data products.'
article_number: L34
article_processing_charge: No
article_type: original
author:
- first_name: Víctor Silva
full_name: Aguirre, Víctor Silva
last_name: Aguirre
- first_name: Dennis
full_name: Stello, Dennis
last_name: Stello
- first_name: Amalie
full_name: Stokholm, Amalie
last_name: Stokholm
- first_name: Jakob R.
full_name: Mosumgaard, Jakob R.
last_name: Mosumgaard
- first_name: Warrick H.
full_name: Ball, Warrick H.
last_name: Ball
- first_name: Sarbani
full_name: Basu, Sarbani
last_name: Basu
- first_name: Diego
full_name: Bossini, Diego
last_name: Bossini
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: Derek
full_name: Buzasi, Derek
last_name: Buzasi
- first_name: Tiago L.
full_name: Campante, Tiago L.
last_name: Campante
- first_name: Lindsey
full_name: Carboneau, Lindsey
last_name: Carboneau
- first_name: William J.
full_name: Chaplin, William J.
last_name: Chaplin
- first_name: Enrico
full_name: Corsaro, Enrico
last_name: Corsaro
- first_name: Guy R.
full_name: Davies, Guy R.
last_name: Davies
- first_name: Yvonne
full_name: Elsworth, Yvonne
last_name: Elsworth
- first_name: Rafael A.
full_name: García, Rafael A.
last_name: García
- first_name: Patrick
full_name: Gaulme, Patrick
last_name: Gaulme
- first_name: Oliver J.
full_name: Hall, Oliver J.
last_name: Hall
- first_name: Rasmus
full_name: Handberg, Rasmus
last_name: Handberg
- first_name: Marc
full_name: Hon, Marc
last_name: Hon
- first_name: Thomas
full_name: Kallinger, Thomas
last_name: Kallinger
- first_name: Liu
full_name: Kang, Liu
last_name: Kang
- first_name: Mikkel N.
full_name: Lund, Mikkel N.
last_name: Lund
- first_name: Savita
full_name: Mathur, Savita
last_name: Mathur
- first_name: Alexey
full_name: Mints, Alexey
last_name: Mints
- first_name: Benoit
full_name: Mosser, Benoit
last_name: Mosser
- first_name: Zeynep
full_name: Çelik Orhan, Zeynep
last_name: Çelik Orhan
- first_name: Thaíse S.
full_name: Rodrigues, Thaíse S.
last_name: Rodrigues
- first_name: Mathieu
full_name: Vrard, Mathieu
last_name: Vrard
- first_name: Mutlu
full_name: Yıldız, Mutlu
last_name: Yıldız
- first_name: Joel C.
full_name: Zinn, Joel C.
last_name: Zinn
- first_name: Sibel
full_name: Örtel, Sibel
last_name: Örtel
- first_name: Paul G.
full_name: Beck, Paul G.
last_name: Beck
- first_name: Keaton J.
full_name: Bell, Keaton J.
last_name: Bell
- first_name: Zhao
full_name: Guo, Zhao
last_name: Guo
- first_name: Chen
full_name: Jiang, Chen
last_name: Jiang
- first_name: James S.
full_name: Kuszlewicz, James S.
last_name: Kuszlewicz
- first_name: Charles A.
full_name: Kuehn, Charles A.
last_name: Kuehn
- first_name: Tanda
full_name: Li, Tanda
last_name: Li
- first_name: Mia S.
full_name: Lundkvist, Mia S.
last_name: Lundkvist
- first_name: Marc
full_name: Pinsonneault, Marc
last_name: Pinsonneault
- first_name: Jamie
full_name: Tayar, Jamie
last_name: Tayar
- first_name: Margarida S.
full_name: Cunha, Margarida S.
last_name: Cunha
- first_name: Saskia
full_name: Hekker, Saskia
last_name: Hekker
- first_name: Daniel
full_name: Huber, Daniel
last_name: Huber
- first_name: Andrea
full_name: Miglio, Andrea
last_name: Miglio
- first_name: Mario J. P.
full_name: F. G. Monteiro, Mario J. P.
last_name: F. G. Monteiro
- first_name: Ditte
full_name: Slumstrup, Ditte
last_name: Slumstrup
- first_name: Mark L.
full_name: Winther, Mark L.
last_name: Winther
- first_name: George
full_name: Angelou, George
last_name: Angelou
- first_name: Othman
full_name: Benomar, Othman
last_name: Benomar
- first_name: Attila
full_name: Bódi, Attila
last_name: Bódi
- first_name: Bruno L.
full_name: De Moura, Bruno L.
last_name: De Moura
- first_name: Sébastien
full_name: Deheuvels, Sébastien
last_name: Deheuvels
- first_name: Aliz
full_name: Derekas, Aliz
last_name: Derekas
- first_name: Maria Pia
full_name: Di Mauro, Maria Pia
last_name: Di Mauro
- first_name: Marc-Antoine
full_name: Dupret, Marc-Antoine
last_name: Dupret
- first_name: Antonio
full_name: Jiménez, Antonio
last_name: Jiménez
- first_name: Yveline
full_name: Lebreton, Yveline
last_name: Lebreton
- first_name: Jaymie
full_name: Matthews, Jaymie
last_name: Matthews
- first_name: Nicolas
full_name: Nardetto, Nicolas
last_name: Nardetto
- first_name: Jose D.
full_name: do Nascimento, Jose D.
last_name: do Nascimento
- first_name: Filipe
full_name: Pereira, Filipe
last_name: Pereira
- first_name: Luisa F.
full_name: Rodríguez Díaz, Luisa F.
last_name: Rodríguez Díaz
- first_name: Aldo M.
full_name: Serenelli, Aldo M.
last_name: Serenelli
- first_name: Emanuele
full_name: Spitoni, Emanuele
last_name: Spitoni
- first_name: Edita
full_name: Stonkutė, Edita
last_name: Stonkutė
- first_name: Juan Carlos
full_name: Suárez, Juan Carlos
last_name: Suárez
- first_name: Robert
full_name: Szabó, Robert
last_name: Szabó
- first_name: Vincent
full_name: Van Eylen, Vincent
last_name: Van Eylen
- first_name: Rita
full_name: Ventura, Rita
last_name: Ventura
- first_name: Kuldeep
full_name: Verma, Kuldeep
last_name: Verma
- first_name: Achim
full_name: Weiss, Achim
last_name: Weiss
- first_name: Tao
full_name: Wu, Tao
last_name: Wu
- first_name: Thomas
full_name: Barclay, Thomas
last_name: Barclay
- first_name: Jørgen
full_name: Christensen-Dalsgaard, Jørgen
last_name: Christensen-Dalsgaard
- first_name: Jon M.
full_name: Jenkins, Jon M.
last_name: Jenkins
- first_name: Hans
full_name: Kjeldsen, Hans
last_name: Kjeldsen
- first_name: George R.
full_name: Ricker, George R.
last_name: Ricker
- first_name: Sara
full_name: Seager, Sara
last_name: Seager
- first_name: Roland
full_name: Vanderspek, Roland
last_name: Vanderspek
citation:
ama: 'Aguirre VS, Stello D, Stokholm A, et al. Detection and characterization of
oscillating red giants: First results from the TESS satellite. The Astrophysical
Journal Letters. 2020;889(2). doi:10.3847/2041-8213/ab6443'
apa: 'Aguirre, V. S., Stello, D., Stokholm, A., Mosumgaard, J. R., Ball, W. H.,
Basu, S., … Vanderspek, R. (2020). Detection and characterization of oscillating
red giants: First results from the TESS satellite. The Astrophysical Journal
Letters. IOP Publishing. https://doi.org/10.3847/2041-8213/ab6443'
chicago: 'Aguirre, Víctor Silva, Dennis Stello, Amalie Stokholm, Jakob R. Mosumgaard,
Warrick H. Ball, Sarbani Basu, Diego Bossini, et al. “Detection and Characterization
of Oscillating Red Giants: First Results from the TESS Satellite.” The Astrophysical
Journal Letters. IOP Publishing, 2020. https://doi.org/10.3847/2041-8213/ab6443.'
ieee: 'V. S. Aguirre et al., “Detection and characterization of oscillating
red giants: First results from the TESS satellite,” The Astrophysical Journal
Letters, vol. 889, no. 2. IOP Publishing, 2020.'
ista: 'Aguirre VS, Stello D, Stokholm A, Mosumgaard JR, Ball WH, Basu S, Bossini
D, Bugnet LA, Buzasi D, Campante TL, Carboneau L, Chaplin WJ, Corsaro E, Davies
GR, Elsworth Y, García RA, Gaulme P, Hall OJ, Handberg R, Hon M, Kallinger T,
Kang L, Lund MN, Mathur S, Mints A, Mosser B, Çelik Orhan Z, Rodrigues TS, Vrard
M, Yıldız M, Zinn JC, Örtel S, Beck PG, Bell KJ, Guo Z, Jiang C, Kuszlewicz JS,
Kuehn CA, Li T, Lundkvist MS, Pinsonneault M, Tayar J, Cunha MS, Hekker S, Huber
D, Miglio A, F. G. Monteiro MJP, Slumstrup D, Winther ML, Angelou G, Benomar O,
Bódi A, De Moura BL, Deheuvels S, Derekas A, Di Mauro MP, Dupret M-A, Jiménez
A, Lebreton Y, Matthews J, Nardetto N, do Nascimento JD, Pereira F, Rodríguez
Díaz LF, Serenelli AM, Spitoni E, Stonkutė E, Suárez JC, Szabó R, Van Eylen V,
Ventura R, Verma K, Weiss A, Wu T, Barclay T, Christensen-Dalsgaard J, Jenkins
JM, Kjeldsen H, Ricker GR, Seager S, Vanderspek R. 2020. Detection and characterization
of oscillating red giants: First results from the TESS satellite. The Astrophysical
Journal Letters. 889(2), L34.'
mla: 'Aguirre, Víctor Silva, et al. “Detection and Characterization of Oscillating
Red Giants: First Results from the TESS Satellite.” The Astrophysical Journal
Letters, vol. 889, no. 2, L34, IOP Publishing, 2020, doi:10.3847/2041-8213/ab6443.'
short: V.S. Aguirre, D. Stello, A. Stokholm, J.R. Mosumgaard, W.H. Ball, S. Basu,
D. Bossini, L.A. Bugnet, D. Buzasi, T.L. Campante, L. Carboneau, W.J. Chaplin,
E. Corsaro, G.R. Davies, Y. Elsworth, R.A. García, P. Gaulme, O.J. Hall, R. Handberg,
M. Hon, T. Kallinger, L. Kang, M.N. Lund, S. Mathur, A. Mints, B. Mosser, Z. Çelik
Orhan, T.S. Rodrigues, M. Vrard, M. Yıldız, J.C. Zinn, S. Örtel, P.G. Beck, K.J.
Bell, Z. Guo, C. Jiang, J.S. Kuszlewicz, C.A. Kuehn, T. Li, M.S. Lundkvist, M.
Pinsonneault, J. Tayar, M.S. Cunha, S. Hekker, D. Huber, A. Miglio, M.J.P. F.
G. Monteiro, D. Slumstrup, M.L. Winther, G. Angelou, O. Benomar, A. Bódi, B.L.
De Moura, S. Deheuvels, A. Derekas, M.P. Di Mauro, M.-A. Dupret, A. Jiménez, Y.
Lebreton, J. Matthews, N. Nardetto, J.D. do Nascimento, F. Pereira, L.F. Rodríguez
Díaz, A.M. Serenelli, E. Spitoni, E. Stonkutė, J.C. Suárez, R. Szabó, V. Van Eylen,
R. Ventura, K. Verma, A. Weiss, T. Wu, T. Barclay, J. Christensen-Dalsgaard, J.M.
Jenkins, H. Kjeldsen, G.R. Ricker, S. Seager, R. Vanderspek, The Astrophysical
Journal Letters 889 (2020).
date_created: 2022-07-18T13:52:54Z
date_published: 2020-02-01T00:00:00Z
date_updated: 2022-08-22T07:25:51Z
day: '01'
doi: 10.3847/2041-8213/ab6443
extern: '1'
external_id:
arxiv:
- '1912.07604'
intvolume: ' 889'
issue: '2'
keyword:
- Space and Planetary Science
- Astronomy and Astrophysics
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/1912.07604
month: '02'
oa: 1
oa_version: Preprint
publication: The Astrophysical Journal Letters
publication_identifier:
eissn:
- 1538-4357
issn:
- 0004-637X
publication_status: published
publisher: IOP Publishing
quality_controlled: '1'
scopus_import: '1'
status: public
title: 'Detection and characterization of oscillating red giants: First results from
the TESS satellite'
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 889
year: '2020'
...
---
_id: '11622'
abstract:
- lang: eng
text: 'The recent discovery of low-amplitude dipolar oscillation mixed modes in
massive red giants indicates the presence of a missing physical process inside
their cores. Stars more massive than ∼ 1.3 M⊙ are known to develop a convective
core during the main-sequence: the dynamo process triggered by this convection
could be the origin of a strong magnetic field inside the core of the star, trapped
when it becomes stably stratified and for the rest of its evolution. The presence
of highly magnetized white dwarfs strengthens the hypothesis of buried fossil
magnetic fields inside the core of evolved low-mass stars. If such a fossil field
exists, it should affect the mixed modes of red giants as they are sensitive to
processes affecting the deepest layers of these stars. The impact of a magnetic
field on dipolar oscillations modes was one of Pr. Michael J. Thompson’s research
topics during the 90s when preparing the helioseismic SoHO space mission. As the
detection of gravity modes in the Sun is still controversial, the investigation
of the solar oscillation modes did not provide any hint of the existence of a
magnetic field in the solar radiative core. Today we have access to the core of
evolved stars thanks to the asteroseismic observation of mixed modes from CoRoT,
Kepler, K2 and TESS missions. The idea of applying and generalizing the work done
for the Sun came from discussions with Pr. Michael Thompson in early 2018 before
we lost him. Following the path we drew together, we theoretically investigate
the effect of a stable axisymmetric mixed poloidal and toroidal magnetic field,
aligned with the rotation axis of the star, on the mixed modes frequencies of
a typical evolved low-mass star. This enables us to estimate the magnetic perturbations
to the eigenfrequencies of mixed dipolar modes, depending on the magnetic field
strength and the evolutionary state of the star. We conclude that strong magnetic
fields of ∼ 1MG should perturb the mixed-mode frequency pattern enough for its
effects to be detectable inside current asteroseismic data.'
acknowledgement: The authors of this work acknowledge the support received from the
PLATO CNES grant, the National Aeronautics and Space Administration under Grant
NNX15AF13G, by the National Science Foundation grant AST-1411685, the Ramon y Cajal
fellowship number RYC-2015-17697, the ERC SPIRE grant (647383), and the Fundation
L’Oréal-Unesco-Académie des sciences.
alternative_title:
- Astrophysics and Space Science Proceedings
article_processing_charge: No
author:
- first_name: Lisa Annabelle
full_name: Bugnet, Lisa Annabelle
id: d9edb345-f866-11ec-9b37-d119b5234501
last_name: Bugnet
orcid: 0000-0003-0142-4000
- first_name: V.
full_name: Prat, V.
last_name: Prat
- first_name: S.
full_name: Mathis, S.
last_name: Mathis
- first_name: R. A.
full_name: García, R. A.
last_name: García
- first_name: S.
full_name: Mathur, S.
last_name: Mathur
- first_name: K.
full_name: Augustson, K.
last_name: Augustson
- first_name: C.
full_name: Neiner, C.
last_name: Neiner
- first_name: M. J.
full_name: Thompson, M. J.
last_name: Thompson
citation:
ama: 'Bugnet LA, Prat V, Mathis S, et al. The impact of a fossil magnetic field
on dipolar mixed-mode frequencies in sub- and red-giant stars. In: Monteiro M,
Garcia RA, Christensen-Dalsgaard J, McIntosh SW, eds. Dynamics of the Sun and
Stars. Vol 57. 1st ed. ASSSP. Cham: Springer Nature; 2020:251-257. doi:10.1007/978-3-030-55336-4_33'
apa: 'Bugnet, L. A., Prat, V., Mathis, S., García, R. A., Mathur, S., Augustson,
K., … Thompson, M. J. (2020). The impact of a fossil magnetic field on dipolar
mixed-mode frequencies in sub- and red-giant stars. In M. Monteiro, R. A. Garcia,
J. Christensen-Dalsgaard, & S. W. McIntosh (Eds.), Dynamics of the Sun
and Stars (1st ed., Vol. 57, pp. 251–257). Cham: Springer Nature. https://doi.org/10.1007/978-3-030-55336-4_33'
chicago: 'Bugnet, Lisa Annabelle, V. Prat, S. Mathis, R. A. García, S. Mathur, K.
Augustson, C. Neiner, and M. J. Thompson. “The Impact of a Fossil Magnetic Field
on Dipolar Mixed-Mode Frequencies in Sub- and Red-Giant Stars.” In Dynamics
of the Sun and Stars, edited by Mario Monteiro, Rafael A Garcia, Jorgen Christensen-Dalsgaard,
and Scott W McIntosh, 1st ed., 57:251–57. ASSSP. Cham: Springer Nature, 2020.
https://doi.org/10.1007/978-3-030-55336-4_33.'
ieee: 'L. A. Bugnet et al., “The impact of a fossil magnetic field on dipolar
mixed-mode frequencies in sub- and red-giant stars,” in Dynamics of the Sun
and Stars, 1st ed., vol. 57, M. Monteiro, R. A. Garcia, J. Christensen-Dalsgaard,
and S. W. McIntosh, Eds. Cham: Springer Nature, 2020, pp. 251–257.'
ista: 'Bugnet LA, Prat V, Mathis S, García RA, Mathur S, Augustson K, Neiner C,
Thompson MJ. 2020.The impact of a fossil magnetic field on dipolar mixed-mode
frequencies in sub- and red-giant stars. In: Dynamics of the Sun and Stars. Astrophysics
and Space Science Proceedings, vol. 57, 251–257.'
mla: Bugnet, Lisa Annabelle, et al. “The Impact of a Fossil Magnetic Field on Dipolar
Mixed-Mode Frequencies in Sub- and Red-Giant Stars.” Dynamics of the Sun and
Stars, edited by Mario Monteiro et al., 1st ed., vol. 57, Springer Nature,
2020, pp. 251–57, doi:10.1007/978-3-030-55336-4_33.
short: L.A. Bugnet, V. Prat, S. Mathis, R.A. García, S. Mathur, K. Augustson, C.
Neiner, M.J. Thompson, in:, M. Monteiro, R.A. Garcia, J. Christensen-Dalsgaard,
S.W. McIntosh (Eds.), Dynamics of the Sun and Stars, 1st ed., Springer Nature,
Cham, 2020, pp. 251–257.
date_created: 2022-07-19T08:25:41Z
date_published: 2020-12-19T00:00:00Z
date_updated: 2022-08-22T08:07:42Z
day: '19'
doi: 10.1007/978-3-030-55336-4_33
edition: '1'
editor:
- first_name: Mario
full_name: Monteiro, Mario
last_name: Monteiro
- first_name: Rafael A
full_name: Garcia, Rafael A
last_name: Garcia
- first_name: Jorgen
full_name: Christensen-Dalsgaard, Jorgen
last_name: Christensen-Dalsgaard
- first_name: Scott W
full_name: McIntosh, Scott W
last_name: McIntosh
extern: '1'
external_id:
arxiv:
- '2012.08684'
intvolume: ' 57'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://arxiv.org/abs/2012.08684
month: '12'
oa: 1
oa_version: Preprint
page: 251-257
place: Cham
publication: Dynamics of the Sun and Stars
publication_identifier:
eisbn:
- 978-3-030-55336-4
eissn:
- 1570-6605
isbn:
- 978-3-030-55335-7
issn:
- 1570-6591
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
series_title: ASSSP
status: public
title: The impact of a fossil magnetic field on dipolar mixed-mode frequencies in
sub- and red-giant stars
type: book_chapter
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 57
year: '2020'
...
---
_id: '11675'
abstract:
- lang: eng
text: 'We consider the problems of maintaining an approximate maximum matching and
an approximate minimum vertex cover in a dynamic graph undergoing a sequence of
edge insertions/deletions. Starting with the seminal work of Onak and Rubinfeld
(in: Proceedings of the ACM symposium on theory of computing (STOC), 2010), this
problem has received significant attention in recent years. Very recently, extending
the framework of Baswana et al. (in: Proceedings of the IEEE symposium on foundations
of computer science (FOCS), 2011) , Solomon (in: Proceedings of the IEEE symposium
on foundations of computer science (FOCS), 2016) gave a randomized dynamic algorithm
for this problem that has an approximation ratio of 2 and an amortized update
time of O(1) with high probability. This algorithm requires the assumption of
an oblivious adversary, meaning that the future sequence of edge insertions/deletions
in the graph cannot depend in any way on the algorithm’s past output. A natural
way to remove the assumption on oblivious adversary is to give a deterministic
dynamic algorithm for the same problem in O(1) update time. In this paper, we
resolve this question. We present a new deterministic fully dynamic algorithm
that maintains a O(1)-approximate minimum vertex cover and maximum fractional
matching, with an amortized update time of O(1). Previously, the best deterministic
algorithm for this problem was due to Bhattacharya et al. (in: Proceedings of
the ACM-SIAM symposium on discrete algorithms (SODA), 2015); it had an approximation
ratio of (2+ε) and an amortized update time of O(logn/ε2). Our result can be generalized
to give a fully dynamic O(f3)-approximate algorithm with O(f2) amortized update
time for the hypergraph vertex cover and fractional hypergraph matching problem,
where every hyperedge has at most f vertices.'
article_processing_charge: No
article_type: original
author:
- first_name: Sayan
full_name: Bhattacharya, Sayan
last_name: Bhattacharya
- first_name: Deeparnab
full_name: Chakrabarty, Deeparnab
last_name: Chakrabarty
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
citation:
ama: Bhattacharya S, Chakrabarty D, Henzinger MH. Deterministic dynamic matching
in O(1) update time. Algorithmica. 2020;82(4):1057-1080. doi:10.1007/s00453-019-00630-4
apa: Bhattacharya, S., Chakrabarty, D., & Henzinger, M. H. (2020). Deterministic
dynamic matching in O(1) update time. Algorithmica. Springer Nature. https://doi.org/10.1007/s00453-019-00630-4
chicago: Bhattacharya, Sayan, Deeparnab Chakrabarty, and Monika H Henzinger. “Deterministic
Dynamic Matching in O(1) Update Time.” Algorithmica. Springer Nature, 2020.
https://doi.org/10.1007/s00453-019-00630-4.
ieee: S. Bhattacharya, D. Chakrabarty, and M. H. Henzinger, “Deterministic dynamic
matching in O(1) update time,” Algorithmica, vol. 82, no. 4. Springer Nature,
pp. 1057–1080, 2020.
ista: Bhattacharya S, Chakrabarty D, Henzinger MH. 2020. Deterministic dynamic matching
in O(1) update time. Algorithmica. 82(4), 1057–1080.
mla: Bhattacharya, Sayan, et al. “Deterministic Dynamic Matching in O(1) Update
Time.” Algorithmica, vol. 82, no. 4, Springer Nature, 2020, pp. 1057–80,
doi:10.1007/s00453-019-00630-4.
short: S. Bhattacharya, D. Chakrabarty, M.H. Henzinger, Algorithmica 82 (2020) 1057–1080.
date_created: 2022-07-27T14:31:06Z
date_published: 2020-04-01T00:00:00Z
date_updated: 2022-09-12T08:55:46Z
day: '01'
doi: 10.1007/s00453-019-00630-4
extern: '1'
intvolume: ' 82'
issue: '4'
keyword:
- Dynamic algorithms
- Data structures
- Graph algorithms
- Matching
- Vertex cover
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.1007/s00453-019-00630-4
month: '04'
oa: 1
oa_version: Published Version
page: 1057-1080
publication: Algorithmica
publication_identifier:
eissn:
- 1432-0541
issn:
- 0178-4617
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Deterministic dynamic matching in O(1) update time
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 82
year: '2020'
...
---
_id: '11674'
abstract:
- lang: eng
text: In this paper, we study the problem of opening centers to cluster a set of
clients in a metric space so as to minimize the sum of the costs of the centers
and of the cluster radii, in a dynamic environment where clients arrive and depart,
and the solution must be updated efficiently while remaining competitive with
respect to the current optimal solution. We call this dynamic sum-of-radii clustering
problem. We present a data structure that maintains a solution whose cost is within
a constant factor of the cost of an optimal solution in metric spaces with bounded
doubling dimension and whose worst-case update time is logarithmic in the parameters
of the problem.
article_processing_charge: No
article_type: original
author:
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Dariusz
full_name: Leniowski, Dariusz
last_name: Leniowski
- first_name: Claire
full_name: Mathieu, Claire
last_name: Mathieu
citation:
ama: Henzinger MH, Leniowski D, Mathieu C. Dynamic clustering to minimize the sum
of radii. Algorithmica. 2020;82(11):3183-3194. doi:10.1007/s00453-020-00721-7
apa: Henzinger, M. H., Leniowski, D., & Mathieu, C. (2020). Dynamic clustering
to minimize the sum of radii. Algorithmica. Springer Nature. https://doi.org/10.1007/s00453-020-00721-7
chicago: Henzinger, Monika H, Dariusz Leniowski, and Claire Mathieu. “Dynamic Clustering
to Minimize the Sum of Radii.” Algorithmica. Springer Nature, 2020. https://doi.org/10.1007/s00453-020-00721-7.
ieee: M. H. Henzinger, D. Leniowski, and C. Mathieu, “Dynamic clustering to minimize
the sum of radii,” Algorithmica, vol. 82, no. 11. Springer Nature, pp.
3183–3194, 2020.
ista: Henzinger MH, Leniowski D, Mathieu C. 2020. Dynamic clustering to minimize
the sum of radii. Algorithmica. 82(11), 3183–3194.
mla: Henzinger, Monika H., et al. “Dynamic Clustering to Minimize the Sum of Radii.”
Algorithmica, vol. 82, no. 11, Springer Nature, 2020, pp. 3183–94, doi:10.1007/s00453-020-00721-7.
short: M.H. Henzinger, D. Leniowski, C. Mathieu, Algorithmica 82 (2020) 3183–3194.
date_created: 2022-07-27T13:58:58Z
date_published: 2020-11-01T00:00:00Z
date_updated: 2022-09-12T08:50:14Z
day: '01'
doi: 10.1007/s00453-020-00721-7
extern: '1'
external_id:
arxiv:
- '1707.02577'
intvolume: ' 82'
issue: '11'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.48550/arXiv.1707.02577
month: '11'
oa: 1
oa_version: Preprint
page: 3183-3194
publication: Algorithmica
publication_identifier:
eissn:
- 1432-0541
issn:
- 0178-4617
publication_status: published
publisher: Springer Nature
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic clustering to minimize the sum of radii
type: journal_article
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 82
year: '2020'
...
---
_id: '11818'
abstract:
- lang: eng
text: "With input sizes becoming massive, coresets - small yet representative summary
of the input - are relevant more than ever. A weighted set C_w that is a subset
of the input is an ε-coreset if the cost of any feasible solution S with respect
to C_w is within [1±ε] of the cost of S with respect to the original input. We
give a very general technique to compute coresets in the fully-dynamic setting
where input points can be added or deleted. Given a static (i.e., not dynamic)
ε-coreset-construction algorithm that runs in time t(n, ε, λ) and computes a coreset
of size s(n, ε, λ), where n is the number of input points and 1-λ is the success
probability, we give a fully-dynamic algorithm that computes an ε-coreset with
worst-case update time O((log n) ⋅ t(s(n, ε/log n, λ/n), ε/log n, λ/n)) (this
bound is stated informally), where the success probability is 1-λ. Our technique
is a fully-dynamic analog of the merge-and-reduce technique, which is due to Har-Peled
and Mazumdar [Har-Peled and Mazumdar, 2004] and is based on a technique of Bentley
and Saxe [Jon Louis Bentley and James B. Saxe, 1980], that applies to the insertion-only
setting where points can only be added. Although, our space usage is O(n), our
technique works in the presence of an adaptive adversary, and we show that Ω(n)
space is required when adversary is adaptive.\r\nAs a concrete implication of
our technique, using the result of Braverman et al. [{Braverman} et al., 2016],
we get fully-dynamic ε-coreset-construction algorithms for k-median and k-means
with worst-case update time O(ε^{-2} k² log⁵ n log³ k) and coreset size O(ε^{-2}
k log n log² k) ignoring log log n and log(1/ε) factors and assuming that ε =
Ω(1/poly(n)) and λ = Ω(1/poly(n)) (which are very weak assumptions made only to
make these bounds easy to parse). This results in the first fully-dynamic constant-approximation
algorithms for k-median and k-means with update times O(poly(k, log n, ε^{-1})).
Specifically, the dependence on k is only quadratic, and the bounds are worst-case.
The best previous bound for both problems was amortized O(nlog n) by Cohen-Addad
et al. [Cohen-Addad et al., 2019] via randomized O(1)-coresets in O(n) space.\r\nWe
also show that under the OMv conjecture [Monika Henzinger et al., 2015], a fully-dynamic
(4 - δ)-approximation algorithm for k-means must either have an amortized update
time of Ω(k^{1-γ}) or amortized query time of Ω(k^{2 - γ}), where γ > 0 is a constant."
alternative_title:
- LIPIcs
article_number: '57'
article_processing_charge: No
author:
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Sagar
full_name: Kale, Sagar
last_name: Kale
citation:
ama: 'Henzinger MH, Kale S. Fully-dynamic coresets. In: 28th Annual European
Symposium on Algorithms. Vol 173. Schloss Dagstuhl - Leibniz-Zentrum für Informatik;
2020. doi:10.4230/LIPIcs.ESA.2020.57'
apa: 'Henzinger, M. H., & Kale, S. (2020). Fully-dynamic coresets. In 28th
Annual European Symposium on Algorithms (Vol. 173). Pisa, Italy: Schloss Dagstuhl
- Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.ESA.2020.57'
chicago: Henzinger, Monika H, and Sagar Kale. “Fully-Dynamic Coresets.” In 28th
Annual European Symposium on Algorithms, Vol. 173. Schloss Dagstuhl - Leibniz-Zentrum
für Informatik, 2020. https://doi.org/10.4230/LIPIcs.ESA.2020.57.
ieee: M. H. Henzinger and S. Kale, “Fully-dynamic coresets,” in 28th Annual European
Symposium on Algorithms, Pisa, Italy, 2020, vol. 173.
ista: 'Henzinger MH, Kale S. 2020. Fully-dynamic coresets. 28th Annual European
Symposium on Algorithms. ESA: Annual European Symposium on Algorithms, LIPIcs,
vol. 173, 57.'
mla: Henzinger, Monika H., and Sagar Kale. “Fully-Dynamic Coresets.” 28th Annual
European Symposium on Algorithms, vol. 173, 57, Schloss Dagstuhl - Leibniz-Zentrum
für Informatik, 2020, doi:10.4230/LIPIcs.ESA.2020.57.
short: M.H. Henzinger, S. Kale, in:, 28th Annual European Symposium on Algorithms,
Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020.
conference:
end_date: 2020-09-09
location: Pisa, Italy
name: 'ESA: Annual European Symposium on Algorithms'
start_date: 2020-09-07
date_created: 2022-08-12T07:22:55Z
date_published: 2020-08-26T00:00:00Z
date_updated: 2023-02-14T09:29:51Z
day: '26'
doi: 10.4230/LIPIcs.ESA.2020.57
extern: '1'
external_id:
arxiv:
- '2004.14891'
intvolume: ' 173'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.4230/LIPIcs.ESA.2020.57
month: '08'
oa: 1
oa_version: Published Version
publication: 28th Annual European Symposium on Algorithms
publication_identifier:
isbn:
- '9783959771627'
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: Fully-dynamic coresets
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 173
year: '2020'
...
---
_id: '11816'
abstract:
- lang: eng
text: In recent years, significant advances have been made in the design and analysis
of fully dynamic maximal matching algorithms. However, these theoretical results
have received very little attention from the practical perspective. Few of the
algorithms are implemented and tested on real datasets, and their practical potential
is far from understood. In this paper, we attempt to bridge the gap between theory
and practice that is currently observed for the fully dynamic maximal matching
problem. We engineer several algorithms and empirically study those algorithms
on an extensive set of dynamic instances.
alternative_title:
- LIPIcs
article_number: '58'
article_processing_charge: No
author:
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Khan
full_name: Shahbaz, Khan
last_name: Shahbaz
- first_name: Richard
full_name: Paul, Richard
last_name: Paul
- first_name: Christian
full_name: Schulz, Christian
last_name: Schulz
citation:
ama: 'Henzinger MH, Shahbaz K, Paul R, Schulz C. Dynamic matching algorithms in
practice. In: 8th Annual European Symposium on Algorithms. Vol 173. Schloss
Dagstuhl - Leibniz-Zentrum für Informatik; 2020. doi:10.4230/LIPIcs.ESA.2020.58'
apa: 'Henzinger, M. H., Shahbaz, K., Paul, R., & Schulz, C. (2020). Dynamic
matching algorithms in practice. In 8th Annual European Symposium on Algorithms
(Vol. 173). Pisa, Italy: Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.ESA.2020.58'
chicago: Henzinger, Monika H, Khan Shahbaz, Richard Paul, and Christian Schulz.
“Dynamic Matching Algorithms in Practice.” In 8th Annual European Symposium
on Algorithms, Vol. 173. Schloss Dagstuhl - Leibniz-Zentrum für Informatik,
2020. https://doi.org/10.4230/LIPIcs.ESA.2020.58.
ieee: M. H. Henzinger, K. Shahbaz, R. Paul, and C. Schulz, “Dynamic matching algorithms
in practice,” in 8th Annual European Symposium on Algorithms, Pisa, Italy,
2020, vol. 173.
ista: 'Henzinger MH, Shahbaz K, Paul R, Schulz C. 2020. Dynamic matching algorithms
in practice. 8th Annual European Symposium on Algorithms. ESA: Annual European
Symposium on Algorithms, LIPIcs, vol. 173, 58.'
mla: Henzinger, Monika H., et al. “Dynamic Matching Algorithms in Practice.” 8th
Annual European Symposium on Algorithms, vol. 173, 58, Schloss Dagstuhl -
Leibniz-Zentrum für Informatik, 2020, doi:10.4230/LIPIcs.ESA.2020.58.
short: M.H. Henzinger, K. Shahbaz, R. Paul, C. Schulz, in:, 8th Annual European
Symposium on Algorithms, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020.
conference:
end_date: 2020-09-09
location: Pisa, Italy
name: 'ESA: Annual European Symposium on Algorithms'
start_date: 2020-09-07
date_created: 2022-08-12T07:13:25Z
date_published: 2020-08-26T00:00:00Z
date_updated: 2023-02-14T08:57:55Z
day: '26'
doi: 10.4230/LIPIcs.ESA.2020.58
extern: '1'
external_id:
arxiv:
- '2004.09099'
intvolume: ' 173'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.4230/LIPIcs.ESA.2020.58
month: '08'
oa: 1
oa_version: Published Version
publication: 8th Annual European Symposium on Algorithms
publication_identifier:
isbn:
- '9783959771627'
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic matching algorithms in practice
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 173
year: '2020'
...
---
_id: '11824'
abstract:
- lang: eng
text: "Independent set is a fundamental problem in combinatorial optimization. While
in general graphs the problem is essentially inapproximable, for many important
graph classes there are approximation algorithms known in the offline setting.
These graph classes include interval graphs and geometric intersection graphs,
where vertices correspond to intervals/geometric objects and an edge indicates
that the two corresponding objects intersect.\r\nWe present dynamic approximation
algorithms for independent set of intervals, hypercubes and hyperrectangles in
d dimensions. They work in the fully dynamic model where each update inserts or
deletes a geometric object. All our algorithms are deterministic and have worst-case
update times that are polylogarithmic for constant d and ε>0, assuming that the
coordinates of all input objects are in [0, N]^d and each of their edges has length
at least 1. We obtain the following results:\r\n- For weighted intervals, we maintain
a (1+ε)-approximate solution.\r\n- For d-dimensional hypercubes we maintain a
(1+ε)2^d-approximate solution in the unweighted case and a O(2^d)-approximate
solution in the weighted case. Also, we show that for maintaining an unweighted
(1+ε)-approximate solution one needs polynomial update time for d ≥ 2 if the ETH
holds.\r\n- For weighted d-dimensional hyperrectangles we present a dynamic algorithm
with approximation ratio (1+ε)log^{d-1}N."
alternative_title:
- LIPIcs
article_number: '51'
article_processing_charge: No
author:
- first_name: Monika H
full_name: Henzinger, Monika H
id: 540c9bbd-f2de-11ec-812d-d04a5be85630
last_name: Henzinger
orcid: 0000-0002-5008-6530
- first_name: Stefan
full_name: Neumann, Stefan
last_name: Neumann
- first_name: Andreas
full_name: Wiese, Andreas
last_name: Wiese
citation:
ama: 'Henzinger MH, Neumann S, Wiese A. Dynamic approximate maximum independent
set of intervals, hypercubes and hyperrectangles. In: 36th International Symposium
on Computational Geometry. Vol 164. Schloss Dagstuhl - Leibniz-Zentrum für
Informatik; 2020. doi:10.4230/LIPIcs.SoCG.2020.51'
apa: 'Henzinger, M. H., Neumann, S., & Wiese, A. (2020). Dynamic approximate
maximum independent set of intervals, hypercubes and hyperrectangles. In 36th
International Symposium on Computational Geometry (Vol. 164). Zurich, Switzerland:
Schloss Dagstuhl - Leibniz-Zentrum für Informatik. https://doi.org/10.4230/LIPIcs.SoCG.2020.51'
chicago: Henzinger, Monika H, Stefan Neumann, and Andreas Wiese. “Dynamic Approximate
Maximum Independent Set of Intervals, Hypercubes and Hyperrectangles.” In 36th
International Symposium on Computational Geometry, Vol. 164. Schloss Dagstuhl
- Leibniz-Zentrum für Informatik, 2020. https://doi.org/10.4230/LIPIcs.SoCG.2020.51.
ieee: M. H. Henzinger, S. Neumann, and A. Wiese, “Dynamic approximate maximum independent
set of intervals, hypercubes and hyperrectangles,” in 36th International Symposium
on Computational Geometry, Zurich, Switzerland, 2020, vol. 164.
ista: 'Henzinger MH, Neumann S, Wiese A. 2020. Dynamic approximate maximum independent
set of intervals, hypercubes and hyperrectangles. 36th International Symposium
on Computational Geometry. SoCG: Symposium on Computational Geometry, LIPIcs,
vol. 164, 51.'
mla: Henzinger, Monika H., et al. “Dynamic Approximate Maximum Independent Set of
Intervals, Hypercubes and Hyperrectangles.” 36th International Symposium on
Computational Geometry, vol. 164, 51, Schloss Dagstuhl - Leibniz-Zentrum für
Informatik, 2020, doi:10.4230/LIPIcs.SoCG.2020.51.
short: M.H. Henzinger, S. Neumann, A. Wiese, in:, 36th International Symposium on
Computational Geometry, Schloss Dagstuhl - Leibniz-Zentrum für Informatik, 2020.
conference:
end_date: 2020-06-26
location: Zurich, Switzerland
name: 'SoCG: Symposium on Computational Geometry'
start_date: 2020-06-23
date_created: 2022-08-12T07:46:44Z
date_published: 2020-06-08T00:00:00Z
date_updated: 2023-02-14T10:00:58Z
day: '08'
doi: 10.4230/LIPIcs.SoCG.2020.51
extern: '1'
external_id:
arxiv:
- '2003.02605'
intvolume: ' 164'
language:
- iso: eng
main_file_link:
- open_access: '1'
url: https://doi.org/10.4230/LIPIcs.SoCG.2020.51
month: '06'
oa: 1
oa_version: Published Version
publication: 36th International Symposium on Computational Geometry
publication_identifier:
isbn:
- '9783959771436'
issn:
- 1868-8969
publication_status: published
publisher: Schloss Dagstuhl - Leibniz-Zentrum für Informatik
quality_controlled: '1'
scopus_import: '1'
status: public
title: Dynamic approximate maximum independent set of intervals, hypercubes and hyperrectangles
type: conference
user_id: 2DF688A6-F248-11E8-B48F-1D18A9856A87
volume: 164
year: '2020'
...