Mostrar el registro sencillo del ítem
dc.contributor.author
Palma, Tali
dc.contributor.author
Claria Olmedo, Juan Jose
dc.contributor.author
Geisler, Doug
dc.contributor.author
Gramajo, Luciana Veronic
dc.contributor.author
Ahumada, Andrea Veronica
dc.date.available
2018-10-03T18:38:11Z
dc.date.issued
2015-04
dc.identifier.citation
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
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/61559
dc.description.abstract
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.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Galaxies: Individual: Lmc
dc.subject
Galaxies: Star Clusters: General
dc.subject
Techniques: Photometric
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Probing the large Magellanic Cloud's recent chemical enrichment history through its star clusters
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2018-10-01T15:46:02Z
dc.identifier.eissn
1365-2966
dc.journal.volume
450
dc.journal.number
2
dc.journal.pagination
2122-2131
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Palma, Tali. Instituto de Astronomía, Universidad Católica del Norte; Chile. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
dc.description.fil
Fil: Claria Olmedo, Juan Jose. Millennium Institute Of Astrophysics; Chile
dc.description.fil
Fil: Geisler, Doug. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina
dc.description.fil
Fil: Gramajo, Luciana Veronic. Universidad Nacional de Cordoba. Observatorio Astronomico de Cordoba; Argentina
dc.description.fil
Fil: Ahumada, Andrea Veronica. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Departamento de Astrofísica Estelar; Argentina
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/450/2/2122/985561
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stv762
Archivos asociados