Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters
- Autores
- Palma, Tali; Claria Olmedo, Juan Jose; Geisler, Doug; Gramajo, Luciana Veronic; Ahumada, Andrea Veronica
- Año de publicación
- 2015
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- We present Washington system colour-magnitude diagrams (CMDs) for 17 practically unstudied star clusters located in the bar as well as in the inner disc and outer regions of the Large Magellanic Cloud (LMC). Cluster sizes were estimated from star counts distributed throughout the entire observed fields. Based on the best fits of theoretical isochrones to the cleaned (C - T1, T1) CMDs, as well as on the δT1 parameter and the standard giant branch method, we derive ages and metallicities for the cluster sample. Four objects are found to be intermediateage clusters (1.8-2.5 Gyr), with [Fe/H] ranging from -0.66 to -0.84. With the exception of SL 263, a very young cluster (~16 Myr), the remaining 12 objects are aged between 0.32 and 0.89 Gyr, with their [Fe/H] values ranging from -0.19 to -0.50. We combined our results with those for other 231 clusters studied in a similar way using the Washington system. The resulting age-metallicity relationship shows a significant dispersion in metallicities, whatever age is considered. Although there seems to exist a clear tendency for the younger clusters to be more metal rich than the intermediate ones, we believe that none of the chemical evolution models currently available in the literature reasonably well represents the recent chemical enrichment processes in the LMC clusters. The present sample of 17 clusters is part of our ongoing project of generating a data base of LMC clusters homogeneously studied using the Washington photometric system and applying the same analysis procedure.
Fil: Palma, Tali. Instituto de Astronomía, Universidad Católica del Norte; Chile. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
Fil: Claria Olmedo, Juan Jose. Millennium Institute Of Astrophysics; Chile
Fil: Geisler, Doug. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina
Fil: Gramajo, Luciana Veronic. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina
Fil: Ahumada, Andrea Veronica. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina - Materia
-
GALAXIES: INDIVIDUAL: LMC
GALAXIES: STAR CLUSTERS: GENERAL
TECHNIQUES: PHOTOMETRIC - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
- Repositorio
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/61559
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spelling |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clustersPalma, TaliClaria Olmedo, Juan JoseGeisler, DougGramajo, Luciana VeronicAhumada, Andrea VeronicaGALAXIES: INDIVIDUAL: LMCGALAXIES: STAR CLUSTERS: GENERALTECHNIQUES: PHOTOMETRIChttps://purl.org/becyt/ford/1.3https://purl.org/becyt/ford/1We present Washington system colour-magnitude diagrams (CMDs) for 17 practically unstudied star clusters located in the bar as well as in the inner disc and outer regions of the Large Magellanic Cloud (LMC). Cluster sizes were estimated from star counts distributed throughout the entire observed fields. Based on the best fits of theoretical isochrones to the cleaned (C - T1, T1) CMDs, as well as on the δT1 parameter and the standard giant branch method, we derive ages and metallicities for the cluster sample. Four objects are found to be intermediateage clusters (1.8-2.5 Gyr), with [Fe/H] ranging from -0.66 to -0.84. With the exception of SL 263, a very young cluster (~16 Myr), the remaining 12 objects are aged between 0.32 and 0.89 Gyr, with their [Fe/H] values ranging from -0.19 to -0.50. We combined our results with those for other 231 clusters studied in a similar way using the Washington system. The resulting age-metallicity relationship shows a significant dispersion in metallicities, whatever age is considered. Although there seems to exist a clear tendency for the younger clusters to be more metal rich than the intermediate ones, we believe that none of the chemical evolution models currently available in the literature reasonably well represents the recent chemical enrichment processes in the LMC clusters. The present sample of 17 clusters is part of our ongoing project of generating a data base of LMC clusters homogeneously studied using the Washington photometric system and applying the same analysis procedure.Fil: Palma, Tali. Instituto de Astronomía, Universidad Católica del Norte; Chile. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaFil: Claria Olmedo, Juan Jose. Millennium Institute Of Astrophysics; ChileFil: Geisler, Doug. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; ArgentinaFil: Gramajo, Luciana Veronic. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; ArgentinaFil: Ahumada, Andrea Veronica. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; ArgentinaWiley Blackwell Publishing, Inc2015-04info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/61559Palma, Tali; Claria Olmedo, Juan Jose; Geisler, Doug; Gramajo, Luciana Veronic; Ahumada, Andrea Veronica; Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 450; 2; 4-2015; 2122-21310035-87111365-2966CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/450/2/2122/985561info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stv762info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:55:28Zoai:ri.conicet.gov.ar:11336/61559instacron: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:34982025-09-29 09:55:28.607CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse |
dc.title.none.fl_str_mv |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters |
title |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters |
spellingShingle |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters Palma, Tali GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL TECHNIQUES: PHOTOMETRIC |
title_short |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters |
title_full |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters |
title_fullStr |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters |
title_full_unstemmed |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters |
title_sort |
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters |
dc.creator.none.fl_str_mv |
Palma, Tali Claria Olmedo, Juan Jose Geisler, Doug Gramajo, Luciana Veronic Ahumada, Andrea Veronica |
author |
Palma, Tali |
author_facet |
Palma, Tali Claria Olmedo, Juan Jose Geisler, Doug Gramajo, Luciana Veronic Ahumada, Andrea Veronica |
author_role |
author |
author2 |
Claria Olmedo, Juan Jose Geisler, Doug Gramajo, Luciana Veronic Ahumada, Andrea Veronica |
author2_role |
author author author author |
dc.subject.none.fl_str_mv |
GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL TECHNIQUES: PHOTOMETRIC |
topic |
GALAXIES: INDIVIDUAL: LMC GALAXIES: STAR CLUSTERS: GENERAL TECHNIQUES: PHOTOMETRIC |
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 present Washington system colour-magnitude diagrams (CMDs) for 17 practically unstudied star clusters located in the bar as well as in the inner disc and outer regions of the Large Magellanic Cloud (LMC). Cluster sizes were estimated from star counts distributed throughout the entire observed fields. Based on the best fits of theoretical isochrones to the cleaned (C - T1, T1) CMDs, as well as on the δT1 parameter and the standard giant branch method, we derive ages and metallicities for the cluster sample. Four objects are found to be intermediateage clusters (1.8-2.5 Gyr), with [Fe/H] ranging from -0.66 to -0.84. With the exception of SL 263, a very young cluster (~16 Myr), the remaining 12 objects are aged between 0.32 and 0.89 Gyr, with their [Fe/H] values ranging from -0.19 to -0.50. We combined our results with those for other 231 clusters studied in a similar way using the Washington system. The resulting age-metallicity relationship shows a significant dispersion in metallicities, whatever age is considered. Although there seems to exist a clear tendency for the younger clusters to be more metal rich than the intermediate ones, we believe that none of the chemical evolution models currently available in the literature reasonably well represents the recent chemical enrichment processes in the LMC clusters. The present sample of 17 clusters is part of our ongoing project of generating a data base of LMC clusters homogeneously studied using the Washington photometric system and applying the same analysis procedure. Fil: Palma, Tali. Instituto de Astronomía, Universidad Católica del Norte; Chile. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina Fil: Claria Olmedo, Juan Jose. Millennium Institute Of Astrophysics; Chile Fil: Geisler, Doug. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina Fil: Gramajo, Luciana Veronic. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina Fil: Ahumada, Andrea Veronica. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina |
description |
We present Washington system colour-magnitude diagrams (CMDs) for 17 practically unstudied star clusters located in the bar as well as in the inner disc and outer regions of the Large Magellanic Cloud (LMC). Cluster sizes were estimated from star counts distributed throughout the entire observed fields. Based on the best fits of theoretical isochrones to the cleaned (C - T1, T1) CMDs, as well as on the δT1 parameter and the standard giant branch method, we derive ages and metallicities for the cluster sample. Four objects are found to be intermediateage clusters (1.8-2.5 Gyr), with [Fe/H] ranging from -0.66 to -0.84. With the exception of SL 263, a very young cluster (~16 Myr), the remaining 12 objects are aged between 0.32 and 0.89 Gyr, with their [Fe/H] values ranging from -0.19 to -0.50. We combined our results with those for other 231 clusters studied in a similar way using the Washington system. The resulting age-metallicity relationship shows a significant dispersion in metallicities, whatever age is considered. Although there seems to exist a clear tendency for the younger clusters to be more metal rich than the intermediate ones, we believe that none of the chemical evolution models currently available in the literature reasonably well represents the recent chemical enrichment processes in the LMC clusters. The present sample of 17 clusters is part of our ongoing project of generating a data base of LMC clusters homogeneously studied using the Washington photometric system and applying the same analysis procedure. |
publishDate |
2015 |
dc.date.none.fl_str_mv |
2015-04 |
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/11336/61559 Palma, Tali; Claria Olmedo, Juan Jose; Geisler, Doug; Gramajo, Luciana Veronic; Ahumada, Andrea Veronica; Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 450; 2; 4-2015; 2122-2131 0035-8711 1365-2966 CONICET Digital CONICET |
url |
http://hdl.handle.net/11336/61559 |
identifier_str_mv |
Palma, Tali; Claria Olmedo, Juan Jose; Geisler, Doug; Gramajo, Luciana Veronic; Ahumada, Andrea Veronica; Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters; Wiley Blackwell Publishing, Inc; Monthly Notices of the Royal Astronomical Society; 450; 2; 4-2015; 2122-2131 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/450/2/2122/985561 info:eu-repo/semantics/altIdentifier/doi/10.1093/mnras/stv762 |
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 application/pdf application/pdf application/pdf 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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1844613672336359424 |
score |
13.070432 |