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dc.contributor.author
Piatti, Andres Eduardo
dc.contributor.author
Sarajedini, Ata
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Geisler, Doug
dc.contributor.author
Clark, David
dc.contributor.author
Seguel, Juan
dc.date.available
2017-07-21T13:42:15Z
dc.date.issued
2007-12
dc.identifier.citation
Piatti, Andres Eduardo; Sarajedini, Ata; Geisler, Doug; Clark, David; Seguel, Juan; Young star clusters immersed in intermediate-age fields in the Small Magellanic Cloud; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 377; 1; 12-2007; 300-316
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/21054
dc.description.abstract
We present CCD photometry in the Washington C and T1 filters for six star clusters (B 34, NGC 256, NGC 265, NGC 294, IC 1611 and NGC 376) in the Small Magellanic Cloud (SMC) and their surrounding fields. The resultant colour–magnitude diagrams (CMDs) extend from T1∼ 14 to as faint as T1∼ 22 revealing the main-sequence turnoffs of the clusters. Adopting a metallicity of Z= 0.004, we compare our cluster photometry with theoretical isochrones in the Washington system in order to derive ages. To facilitate age determination of the surrounding fields, we use the magnitude difference between the helium-burning red clump stars and the main-sequence turnoff. Finally, we estimate mean metallicities for the field stars by comparing the location of the field red giant branch with standard giant branches for Galactic globular clusters of known abundance, corrected for age effects. Combining these results with our previous work, we find a clear trend of younger clusters being located closer to the centre of the SMC. In addition, there is a tendency for the mean metallicity and its dispersion to be greater inside 4° of the SMC's centre as compared to outside this radius. As far as the properties of the field stars are concerned, we find little correlation between the ages of the clusters and those of the field stars against which they are projected. Clearly, more work needs to be done to clarify these trends.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject.classification
Astronomía
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Ciencias Físicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Young star clusters immersed in intermediate-age fields in the Small Magellanic Cloud
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-07-18T17:16:48Z
dc.journal.volume
377
dc.journal.number
1
dc.journal.pagination
300-316
dc.journal.pais
Reino Unido
dc.journal.ciudad
Londres
dc.description.fil
Fil: Piatti, Andres Eduardo. Consejo Nacional de Investigaciónes Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Astronomía y Física del Espacio. - Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Astronomía y Física del Espacio; Argentina
dc.description.fil
Fil: Sarajedini, Ata. University of Florida; Estados Unidos
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Fil: Geisler, Doug. Universidad de Concepción; Chile
dc.description.fil
Fil: Clark, David. University of Florida; Estados Unidos
dc.description.fil
Fil: Seguel, Juan. Universidad de Concepción; Chile
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/j.1365-2966.2007.11604.x
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article-lookup/doi/10.1111/j.1365-2966.2007.11604.x
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