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dc.contributor.author
Piatti, Andres Eduardo
dc.contributor.author
Geisler, D.
dc.contributor.author
Sarajedini, A.
dc.contributor.author
Gallart, C.
dc.date.available
2017-07-14T15:18:00Z
dc.date.issued
2009-05
dc.identifier.citation
Piatti, Andres Eduardo; Geisler, D.; Sarajedini, A.; Gallart, C.; Washington photometry of five star clusters in the Large Magellanic Cloud; EDP Sciences; Astronomy and Astrophysics; 501; 2; 5-2009; 585-593
dc.identifier.issn
0004-6361
dc.identifier.uri
http://hdl.handle.net/11336/20518
dc.description.abstract
Aims. We present CCD photometry in the Washington system C and T1 passbands down to T1 ∼ 22.5 in the fields of NGC 1697, SL 133, NGC 1997, SL 663, and OHSC 28, five mostly unstudied star clusters in the LMC. Methods. Cluster radii were estimated from star counts in appropriate-sized boxes distributed throughout the entire observed fields. We perform a detailed analysis of the field star contamination and derive cluster colour-magnitude diagrams (CMDs). Based on the
best fits of isochrones computed by the Padova group to the (T1, C − T1) CMDs, the δ(T1) index and the Standard Giant Branch procedure, we derive metallicities and ages for the five clusters. We combine our sample with clusters with ages and metallicities on a similar scale and examine relationships between position in the LMC, age and metallicity. Results. With the exception of NGC 1697 (age = 0.7 Gyr, [Fe/H] = 0.0 dex), the remaining four clusters are of intermediate-age (from 2.2 to 3.0 Gyr) and relatively metal-poor ([Fe/H] = –0.7 dex). The cluster and field age-metallicty realtions show evidence for a metallicity offset but do overlap, particularly on the upper envelope side of the cluster age-metallicity relation. Conclusions. We confirm previous results that clusters younger than ∼1 Gyr were formed during an outside-in process; this occurred after a burst of cluster formation that took place mainly in the outer disk and peaked at ∼2 Gyr ago.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
EDP Sciences
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Photometric
dc.subject
Galaxies
dc.subject
Star Clusters
dc.subject.classification
Astronomía
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Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Washington photometry of five star clusters in the Large 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
2017-07-14T14:08:17Z
dc.journal.volume
501
dc.journal.number
2
dc.journal.pagination
585-593
dc.journal.pais
Francia
dc.journal.ciudad
Paris
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: Geisler, D.. Universidad de Concepción; Chile
dc.description.fil
Fil: Sarajedini, A.. University of Florida; Estados Unidos
dc.description.fil
Fil: Gallart, C.. Instituto de Astrofísica de Canarias,; España
dc.journal.title
Astronomy and Astrophysics
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1051/0004-6361/200912223
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://www.aanda.org/articles/aa/abs/2009/26/aa12223-09/aa12223-09.html
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