No evidence for significant age spreads in young massive LMC clusters

ABSTRACT: Recent discoveries have put the picture of stellar clusters being simple stellar populations into question. In particular, the color magnitude diagrams of intermediate age (1–2 Gyr) massive clusters in the Large Magellanic Cloud (LMC) show features that could be interpreted as age spreads...

Full description

Autores:
Silva Villa, Esteban
Niederhofer, F.
Hilker, M.
Bastian, N.
Tipo de recurso:
Article of investigation
Fecha de publicación:
2015
Institución:
Universidad de Antioquia
Repositorio:
Repositorio UdeA
Idioma:
eng
OAI Identifier:
oai:bibliotecadigital.udea.edu.co:10495/32712
Acceso en línea:
https://hdl.handle.net/10495/32712
Palabra clave:
Galaxias
Galaxies
Estrellas
Stars
Estrellas - evolución
Stars - evolution
Magellanic Clouds
Diagrama de Hertzsprung-Russell
Rights
openAccess
License
http://creativecommons.org/licenses/by/2.5/co/
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network_acronym_str UDEA2
network_name_str Repositorio UdeA
repository_id_str
dc.title.spa.fl_str_mv No evidence for significant age spreads in young massive LMC clusters
title No evidence for significant age spreads in young massive LMC clusters
spellingShingle No evidence for significant age spreads in young massive LMC clusters
Galaxias
Galaxies
Estrellas
Stars
Estrellas - evolución
Stars - evolution
Magellanic Clouds
Diagrama de Hertzsprung-Russell
title_short No evidence for significant age spreads in young massive LMC clusters
title_full No evidence for significant age spreads in young massive LMC clusters
title_fullStr No evidence for significant age spreads in young massive LMC clusters
title_full_unstemmed No evidence for significant age spreads in young massive LMC clusters
title_sort No evidence for significant age spreads in young massive LMC clusters
dc.creator.fl_str_mv Silva Villa, Esteban
Niederhofer, F.
Hilker, M.
Bastian, N.
dc.contributor.author.none.fl_str_mv Silva Villa, Esteban
Niederhofer, F.
Hilker, M.
Bastian, N.
dc.contributor.researchgroup.spa.fl_str_mv Grupo de Física y Astrofísica Computacional (FACOM)
dc.subject.lemb.none.fl_str_mv Galaxias
Galaxies
Estrellas
Stars
Estrellas - evolución
Stars - evolution
topic Galaxias
Galaxies
Estrellas
Stars
Estrellas - evolución
Stars - evolution
Magellanic Clouds
Diagrama de Hertzsprung-Russell
dc.subject.proposal.spa.fl_str_mv Magellanic Clouds
Diagrama de Hertzsprung-Russell
description ABSTRACT: Recent discoveries have put the picture of stellar clusters being simple stellar populations into question. In particular, the color magnitude diagrams of intermediate age (1–2 Gyr) massive clusters in the Large Magellanic Cloud (LMC) show features that could be interpreted as age spreads of 100–500 Myr. If multiple generations of stars are present in these clusters then, as a consequence, young (<1 Gyr) clusters with similar properties should have age spreads of the same order. In this paper we use archival Hubble Space Telescope (HST) data of eight young massive LMC clusters (NGC 1831, NGC 1847, NGC 1850, NGC 2004, NGC 2100, NGC 2136, NGC 2157 and NGC 2249) to test this hypothesis. We analyzed the color–magnitude diagrams of these clusters and fitted their star formation history to derive upper limits of potential age spreads. We find that none of the clusters analyzed in this work shows evidence for an extended star formation history that would be consistent with the age spreads proposed for intermediate age LMC clusters. Tests with artificial single age clusters show that the fitted age dispersion of the youngest clusters is consistent with spreads that are purely induced by photometric errors. As an additional result we determined a new age of NGC 1850 of ∼100 Myr, significantly higher than the commonly used value of about 30 Myr, although consistent with early HST estimates.
publishDate 2015
dc.date.issued.none.fl_str_mv 2015
dc.date.accessioned.none.fl_str_mv 2022-12-11T16:18:52Z
dc.date.available.none.fl_str_mv 2022-12-11T16:18:52Z
dc.type.spa.fl_str_mv Artículo de investigación
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dc.identifier.issn.none.fl_str_mv 0004-6361
dc.identifier.uri.none.fl_str_mv https://hdl.handle.net/10495/32712
dc.identifier.doi.none.fl_str_mv 10.1051/0004-6361/201424455
dc.identifier.eissn.none.fl_str_mv 1432-0746
identifier_str_mv 0004-6361
10.1051/0004-6361/201424455
1432-0746
url https://hdl.handle.net/10495/32712
dc.language.iso.spa.fl_str_mv eng
language eng
dc.relation.ispartofjournalabbrev.spa.fl_str_mv Astron. Astrophys.
dc.relation.citationendpage.spa.fl_str_mv 18
dc.relation.citationissue.spa.fl_str_mv A62
dc.relation.citationstartpage.spa.fl_str_mv 1
dc.relation.citationvolume.spa.fl_str_mv 575
dc.relation.ispartofjournal.spa.fl_str_mv Astronomy and Astrophysics
dc.rights.uri.*.fl_str_mv http://creativecommons.org/licenses/by/2.5/co/
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dc.publisher.place.spa.fl_str_mv Berlín, Alemania
institution Universidad de Antioquia
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spelling Silva Villa, EstebanNiederhofer, F.Hilker, M.Bastian, N.Grupo de Física y Astrofísica Computacional (FACOM)2022-12-11T16:18:52Z2022-12-11T16:18:52Z20150004-6361https://hdl.handle.net/10495/3271210.1051/0004-6361/2014244551432-0746ABSTRACT: Recent discoveries have put the picture of stellar clusters being simple stellar populations into question. In particular, the color magnitude diagrams of intermediate age (1–2 Gyr) massive clusters in the Large Magellanic Cloud (LMC) show features that could be interpreted as age spreads of 100–500 Myr. If multiple generations of stars are present in these clusters then, as a consequence, young (<1 Gyr) clusters with similar properties should have age spreads of the same order. In this paper we use archival Hubble Space Telescope (HST) data of eight young massive LMC clusters (NGC 1831, NGC 1847, NGC 1850, NGC 2004, NGC 2100, NGC 2136, NGC 2157 and NGC 2249) to test this hypothesis. We analyzed the color–magnitude diagrams of these clusters and fitted their star formation history to derive upper limits of potential age spreads. We find that none of the clusters analyzed in this work shows evidence for an extended star formation history that would be consistent with the age spreads proposed for intermediate age LMC clusters. Tests with artificial single age clusters show that the fitted age dispersion of the youngest clusters is consistent with spreads that are purely induced by photometric errors. As an additional result we determined a new age of NGC 1850 of ∼100 Myr, significantly higher than the commonly used value of about 30 Myr, although consistent with early HST estimates.COL003826218application/pdfengEDP SciencesBerlín, Alemaniahttp://creativecommons.org/licenses/by/2.5/co/https://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2No evidence for significant age spreads in young massive LMC clustersArtículo de investigaciónhttp://purl.org/coar/resource_type/c_2df8fbb1https://purl.org/redcol/resource_type/ARThttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionGalaxiasGalaxiesEstrellasStarsEstrellas - evoluciónStars - evolutionMagellanic CloudsDiagrama de Hertzsprung-RussellAstron. 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