Výsledky vyhledávání - "W. Chantereau"

On the maximum helium content of multiple populations in the globular cluster NGC6752

Autor: Corinne Charbonnel, Fabrice Martins, W. Chantereau

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2021, 650, pp.A162. ⟨10.1051/0004-6361/202140800⟩
Astronomy and Astrophysics-A&A, 2021, 650, pp.A162. ⟨10.1051/0004-6361/202140800⟩

Multiple populations in globular clusters are usually explained by the formation of stars out of material with a chemical composition that is polluted to different degrees by the ejecta of short-lived, massive stars of various type. Among other thing

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::9209d5eab8b82d59982f0d02fa473b31
https://hal.archives-ouvertes.fr/hal-03260790

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On the Nitrogen variation in ~2 Gyr old massive star clusters in the Large Magellanic Cloud

Autor: Emanuele Dalessandro, N. Kacharov, W. Chantereau, S. Martocchia, Sebastian Kamann, Nate Bastian, I. Cabrera-Ziri, Carmela Lardo, Maurizio Salaris, Marina Rejkuba, S. S. Larsen

Publikováno v: Monthly Notices of the Royal Astronomical Society
Monthly Notices of the Royal Astronomical Society, Oxford University Press (OUP): Policy P-Oxford Open Option A, 2021, 505 (4), pp.5389-5402. ⟨10.1093/mnras/stab1590⟩
Monthly Notices of the Royal Astronomical Society, 505, 5389-5402
Monthly Notices of the Royal Astronomical Society, 505, 4, pp. 5389-5402

We present ESO/VLT FORS2 low resolution spectroscopy of red giant branch stars in three massive, intermediate age ($\sim 1.7-2.3$ Gyr) star clusters in the Large Magellanic Cloud. We measure CH and CN index bands at 4300A, and 3883A, as well as [C/Fe

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Impact of a companion and of chromospheric emission on the shape of chromosome maps for globular clusters

Autor: Corinne Charbonnel, W. Chantereau, Fabrice Martins, Carmela Lardo, Julien Morin

Publikováno v: Astronomy and Astrophysics-A&A
Astronomy and Astrophysics-A&A, EDP Sciences, 2020, 635, pp.A52. ⟨10.1051/0004-6361/201937212⟩

We investigate the role of binaries and chromospheric emission on HST photometry of globular clusters' stars. We quantify their respective effects on the position of stars in the chromosome map, especially among the first population. We computed atmo

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d1384384bcc49dccdc11b0961b8f05e6
http://arxiv.org/abs/2001.07581

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Searching for multiple populations in the integrated light of the young and extremely massive clusters in the merger remnant NGC 7252

Autor: Sebastian Kamann, Søren S. Larsen, S. Martocchia, Randa Asa'd, Christopher Usher, W. Chantereau, Nate Bastian, Maurizio Salaris, Carmela Lardo, Michael Hilker, I. Cabrera-Ziri

Publikováno v: Monthly Notices of the Royal Astronomical Society, 494, 1, pp. 332-337
Monthly Notices of the Royal Astronomical Society, 494, 332-337

Recent work has shown that the properties of multiple populations within massive stellar clusters (i.e., in the extent of their abundance variations as well as the fraction of stars that show the anomalous chemistry) depend on the mass as well as the

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::277196f9ad024e464203a6830767741d
http://hdl.handle.net/11585/789324

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The loss of the intra-cluster medium in globular clusters

Autor: Nate Bastian, Maurizio Salaris, Romain Teyssier, W. Chantereau, P Biernacki, Marie Martig

Stars in globular clusters (GCs) lose a non negligible amount of mass during their post-main sequence evolution. This material is then expected to build up a substantial intra-cluster medium (ICM) within the GC. However, the observed gas content in G

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2d520c428eff9520884fb97c60619190

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Multiple Populations in Integrated Light Spectroscopy of Intermediate Age Clusters

Autor: Maurizio Salaris, W. Chantereau, S. Martocchia, Ricardo P. Schiavon, Carmela Lardo, Christopher Usher, Michael Hilker, I. Cabrera-Ziri, Sebastian Kamann, Søren S. Larsen, Randa Asa'd, Nate Bastian

Publikováno v: Monthly Notices of the Royal Astronomical Society: Letters, 489, 1, pp. L80-L85
Monthly Notices of the Royal Astronomical Society: Letters, 489, L80-L85

The presence of star-to-star light-element abundance variations (a.k.a. multiple populations, MPs) appears to be ubiquitous within old and massive clusters in the Milky Way and all studied nearby galaxies. Most previous studies have focussed on resol

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af99125af259ff1e775a51b674f94cd6
http://arxiv.org/abs/1909.01404

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Women Scientists Who Made Nuclear Astrophysics

Publikováno v: Springer proceedings in physics, 219
Springer Proceedings in Physics ISBN: 9783030138752

Female role models reduce the impact on women of stereotype threat, i.e. of being at risk of conforming to a negative stereotype about oneâ€™s social, gender, or racial group (Fine in Delusion of Gender. W.W. Norton & Co. NY, p. 36, 2010 [1]; St

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1890dcfa772122cec903470b61063cbb
http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/296706

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Helium enrichment in intermediate-age Magellanic Clouds clusters: towards an ubiquity of multiple stellar populations?

Autor: Maurizio Salaris, S. Martocchia, W. Chantereau, Nate Bastian

Publikováno v: Monthly Notices of the Royal Astronomical Society

Intermediate-age star clusters in the Magellanic Clouds harbour signatures of the multiple stellar populations long thought to be restricted to old globular clusters. We compare synthetic horizontal branch models with Hubble Space Telescope photometr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d963e1c534a8ba9b00264ca3470eecb5
http://arxiv.org/abs/1902.01806

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The search for multiple populations in Magellanic Clouds clusters - V. Correlation between cluster age and abundance spreads

Autor: Carmela Lardo, Imants Platais, Florian Niederhofer, V. Kozhurina-Platais, Emanuele Dalessandro, Christopher Usher, Maurizio Salaris, Michael Hilker, I. Cabrera-Ziri, Doug Geisler, S. Martocchia, Nate Bastian, N. Kacharov, S. S. Larsen, Alessio Mucciarelli, W. Chantereau

Publikováno v: Monthly Notices of the Royal Astronomical Society, 487, 4, pp. 5324-5334
Monthly Notices of the Royal Astronomical Society, 487, 5324-5334
Monthly Notices of the Royal Astronomical Society

In our HST photometric survey, we have been searching for multiple stellar populations (MPs) in Magellanic Clouds (MCs) massive star clusters which span a significant range of ages ($\sim 1.5-11$ Gyr). In the previous papers of the series, we have sh

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::66ee6d111a6c8b4f1d5fa5b04eb6bac1
https://hdl.handle.net/2066/205632

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