Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters

Autores
Gilligan, Christina K.; Chaboyer, Brian; Cummings, Jeffrey D.; Mackey, Dougal; Cohen, Roger E.; Geisler, Douglas; Grocholski, Aaron J.; Parisi, Maria Celeste; Sarajedini, Ata; Ventura, Paolo; Villanova, Sandro; Yang, Soung-Chul; Wagner-Kaiser, Rachel
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
We examine four ancient LargeMagellanic Cloud (LMC) globular clusters (GCs) for evidence of multiple stellar populations using the Advanced Camera for Surveys andWide Field Camera 3 on the Hubble Space Telescope Programme GO-14164. NGC 1466, NGC 1841, and NGC 2257 all show evidence for a redder, secondary population along themain sequence. Reticulum does not showevidence for the presence of a redder population, but thisGChas the least number of stars and Monte Carlo simulations indicate that the sample of main-sequence stars is too small to robustly infer whether a redder population exists in this cluster. The second, redder, population of the other three clusters constitutes ∼ 30 - 40 per cent of the total population along the main sequence. This brings the total number of ancient LMC GCs with known split or broadened main sequences to five. However, unlike for Hodge 11 and NGC 2210 (see Gilligan et al. (2019)), none of the clusters shows evidence for multiple populations in the horizontal branch. We also do not find evidence of a second population along the red giant branch.
Fil: Gilligan, Christina K.. Dartmouth College; Estados Unidos
Fil: Chaboyer, Brian. Dartmouth College; Estados Unidos
Fil: Cummings, Jeffrey D.. University Johns Hopkins; Estados Unidos
Fil: Mackey, Dougal. Australian National University; Australia
Fil: Cohen, Roger E.. Space Telescope Science Institute; Estados Unidos
Fil: Geisler, Douglas. Universidad de Concepción; Chile
Fil: Grocholski, Aaron J.. University of Florida; Estados Unidos
Fil: Parisi, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Sarajedini, Ata. University of Florida; Estados Unidos
Fil: Ventura, Paolo. Osservatorio Astronomico Di Roma; Italia
Fil: Villanova, Sandro. Universidad de Concepción; Chile
Fil: Yang, Soung-Chul. Korea Astronomy And Space Science Institute; Corea del Sur
Fil: Wagner-Kaiser, Rachel. University of Florida; Estados Unidos
Materia
GALAXIES: STAR CLUSTERS: INDIVIDUAL: (NGC 1466, NGC 1841, NGC 2257, RETICULUM)
MAGELLANIC CLOUDS
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/141088
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clustersGilligan, Christina K.Chaboyer, BrianCummings, Jeffrey D.Mackey, DougalCohen, Roger E.Geisler, DouglasGrocholski, Aaron J.Parisi, Maria CelesteSarajedini, AtaVentura, PaoloVillanova, SandroYang, Soung-ChulWagner-Kaiser, RachelGALAXIES: STAR CLUSTERS: INDIVIDUAL: (NGC 1466, NGC 1841, NGC 2257, RETICULUM)MAGELLANIC CLOUDShttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We examine four ancient LargeMagellanic Cloud (LMC) globular clusters (GCs) for evidence of multiple stellar populations using the Advanced Camera for Surveys andWide Field Camera 3 on the Hubble Space Telescope Programme GO-14164. NGC 1466, NGC 1841, and NGC 2257 all show evidence for a redder, secondary population along themain sequence. Reticulum does not showevidence for the presence of a redder population, but thisGChas the least number of stars and Monte Carlo simulations indicate that the sample of main-sequence stars is too small to robustly infer whether a redder population exists in this cluster. The second, redder, population of the other three clusters constitutes ∼ 30 - 40 per cent of the total population along the main sequence. This brings the total number of ancient LMC GCs with known split or broadened main sequences to five. However, unlike for Hodge 11 and NGC 2210 (see Gilligan et al. (2019)), none of the clusters shows evidence for multiple populations in the horizontal branch. We also do not find evidence of a second population along the red giant branch.Fil: Gilligan, Christina K.. Dartmouth College; Estados UnidosFil: Chaboyer, Brian. Dartmouth College; Estados UnidosFil: Cummings, Jeffrey D.. University Johns Hopkins; Estados UnidosFil: Mackey, Dougal. Australian National University; AustraliaFil: Cohen, Roger E.. Space Telescope Science Institute; Estados UnidosFil: Geisler, Douglas. Universidad de Concepción; ChileFil: Grocholski, Aaron J.. University of Florida; Estados UnidosFil: Parisi, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; ArgentinaFil: Sarajedini, Ata. University of Florida; Estados UnidosFil: Ventura, Paolo. Osservatorio Astronomico Di Roma; ItaliaFil: Villanova, Sandro. Universidad de Concepción; ChileFil: Yang, Soung-Chul. Korea Astronomy And Space Science Institute; Corea del SurFil: Wagner-Kaiser, Rachel. University of Florida; Estados UnidosWiley Blackwell Publishing, Inc2020-03info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/141088Gilligan, Christina K.; Chaboyer, Brian; Cummings, Jeffrey D.; Mackey, Dougal; Cohen, Roger E.; et al.; Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 494; 2; 3-2020; 1946-19550035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/494/2/1946/5813272info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa822info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-17T11:12:28Zoai:ri.conicet.gov.ar:11336/141088instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-17 11:12:29.053CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
title Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
spellingShingle Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
Gilligan, Christina K.
GALAXIES: STAR CLUSTERS: INDIVIDUAL: (NGC 1466, NGC 1841, NGC 2257, RETICULUM)
MAGELLANIC CLOUDS
title_short Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
title_full Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
title_fullStr Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
title_full_unstemmed Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
title_sort Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters
dc.creator.none.fl_str_mv Gilligan, Christina K.
Chaboyer, Brian
Cummings, Jeffrey D.
Mackey, Dougal
Cohen, Roger E.
Geisler, Douglas
Grocholski, Aaron J.
Parisi, Maria Celeste
Sarajedini, Ata
Ventura, Paolo
Villanova, Sandro
Yang, Soung-Chul
Wagner-Kaiser, Rachel
author Gilligan, Christina K.
author_facet Gilligan, Christina K.
Chaboyer, Brian
Cummings, Jeffrey D.
Mackey, Dougal
Cohen, Roger E.
Geisler, Douglas
Grocholski, Aaron J.
Parisi, Maria Celeste
Sarajedini, Ata
Ventura, Paolo
Villanova, Sandro
Yang, Soung-Chul
Wagner-Kaiser, Rachel
author_role author
author2 Chaboyer, Brian
Cummings, Jeffrey D.
Mackey, Dougal
Cohen, Roger E.
Geisler, Douglas
Grocholski, Aaron J.
Parisi, Maria Celeste
Sarajedini, Ata
Ventura, Paolo
Villanova, Sandro
Yang, Soung-Chul
Wagner-Kaiser, Rachel
author2_role author
author
author
author
author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv GALAXIES: STAR CLUSTERS: INDIVIDUAL: (NGC 1466, NGC 1841, NGC 2257, RETICULUM)
MAGELLANIC CLOUDS
topic GALAXIES: STAR CLUSTERS: INDIVIDUAL: (NGC 1466, NGC 1841, NGC 2257, RETICULUM)
MAGELLANIC CLOUDS
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.3
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv We examine four ancient LargeMagellanic Cloud (LMC) globular clusters (GCs) for evidence of multiple stellar populations using the Advanced Camera for Surveys andWide Field Camera 3 on the Hubble Space Telescope Programme GO-14164. NGC 1466, NGC 1841, and NGC 2257 all show evidence for a redder, secondary population along themain sequence. Reticulum does not showevidence for the presence of a redder population, but thisGChas the least number of stars and Monte Carlo simulations indicate that the sample of main-sequence stars is too small to robustly infer whether a redder population exists in this cluster. The second, redder, population of the other three clusters constitutes ∼ 30 - 40 per cent of the total population along the main sequence. This brings the total number of ancient LMC GCs with known split or broadened main sequences to five. However, unlike for Hodge 11 and NGC 2210 (see Gilligan et al. (2019)), none of the clusters shows evidence for multiple populations in the horizontal branch. We also do not find evidence of a second population along the red giant branch.
Fil: Gilligan, Christina K.. Dartmouth College; Estados Unidos
Fil: Chaboyer, Brian. Dartmouth College; Estados Unidos
Fil: Cummings, Jeffrey D.. University Johns Hopkins; Estados Unidos
Fil: Mackey, Dougal. Australian National University; Australia
Fil: Cohen, Roger E.. Space Telescope Science Institute; Estados Unidos
Fil: Geisler, Douglas. Universidad de Concepción; Chile
Fil: Grocholski, Aaron J.. University of Florida; Estados Unidos
Fil: Parisi, Maria Celeste. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
Fil: Sarajedini, Ata. University of Florida; Estados Unidos
Fil: Ventura, Paolo. Osservatorio Astronomico Di Roma; Italia
Fil: Villanova, Sandro. Universidad de Concepción; Chile
Fil: Yang, Soung-Chul. Korea Astronomy And Space Science Institute; Corea del Sur
Fil: Wagner-Kaiser, Rachel. University of Florida; Estados Unidos
description We examine four ancient LargeMagellanic Cloud (LMC) globular clusters (GCs) for evidence of multiple stellar populations using the Advanced Camera for Surveys andWide Field Camera 3 on the Hubble Space Telescope Programme GO-14164. NGC 1466, NGC 1841, and NGC 2257 all show evidence for a redder, secondary population along themain sequence. Reticulum does not showevidence for the presence of a redder population, but thisGChas the least number of stars and Monte Carlo simulations indicate that the sample of main-sequence stars is too small to robustly infer whether a redder population exists in this cluster. The second, redder, population of the other three clusters constitutes ∼ 30 - 40 per cent of the total population along the main sequence. This brings the total number of ancient LMC GCs with known split or broadened main sequences to five. However, unlike for Hodge 11 and NGC 2210 (see Gilligan et al. (2019)), none of the clusters shows evidence for multiple populations in the horizontal branch. We also do not find evidence of a second population along the red giant branch.
publishDate 2020
dc.date.none.fl_str_mv 2020-03
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/141088
Gilligan, Christina K.; Chaboyer, Brian; Cummings, Jeffrey D.; Mackey, Dougal; Cohen, Roger E.; et al.; Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 494; 2; 3-2020; 1946-1955
0035-8711
1365-2966
CONICET Digital
CONICET
url http://hdl.handle.net/11336/141088
identifier_str_mv Gilligan, Christina K.; Chaboyer, Brian; Cummings, Jeffrey D.; Mackey, Dougal; Cohen, Roger E.; et al.; Exploring the nature and synchronicity of early cluster formation in the Large Magellanic Cloud - V. Multiple populations in ancient globular clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 494; 2; 3-2020; 1946-1955
0035-8711
1365-2966
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/494/2/1946/5813272
info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/staa822
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
publisher.none.fl_str_mv Wiley Blackwell Publishing, Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.001348

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