Identification of a new relatively old star cluster in the small magellanic cloud

We present results on the age and metallicity estimates of the astonishingly unstudied Small Magellanic Cloud (SMC) cluster (ESO51-SC09), from CCD BVI photometry obtained at the ESO NTT with the EMMI attached. ESO51-SC09 turns out to be a relatively small cluster (FWHM = 10± 1pc) located ∼4° northwa...

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Detalles Bibliográficos
Publicado: 2012
Materias:
galaxies: individual (SMC)
galaxies: star clusters: individual (ESO 51-SC09)
techniques: photometric
Acceso en línea:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v756_n2_p_Piatti
http://hdl.handle.net/20.500.12110/paper_20418205_v756_n2_p_Piatti
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id paper:paper_20418205_v756_n2_p_Piatti
record_format dspace
spelling paper:paper_20418205_v756_n2_p_Piatti2023-06-08T16:33:15Z Identification of a new relatively old star cluster in the small magellanic cloud galaxies: individual (SMC) galaxies: star clusters: individual (ESO 51-SC09) techniques: photometric We present results on the age and metallicity estimates of the astonishingly unstudied Small Magellanic Cloud (SMC) cluster (ESO51-SC09), from CCD BVI photometry obtained at the ESO NTT with the EMMI attached. ESO51-SC09 turns out to be a relatively small cluster (FWHM = 10± 1pc) located ∼4° northward from the galaxy center. We report for the first time a mean cluster age of 7.0± 1.3Gyr and a mean cluster metallicity of [Fe/H]= -1.00± 0.15dex, concluding that ESO51-SC09 belongs to the group of the oldest SMC clusters. We found that the cluster is projected onto an older (age ∼10-13Gyr) and more metal-poor ([Fe/H]= -1.3± 0.2dex) dominant field stellar population, so that the cluster could have reached its current location because of its orbital motion. © 2012 The American Astronomical Society. All rights reserved. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v756_n2_p_Piatti http://hdl.handle.net/20.500.12110/paper_20418205_v756_n2_p_Piatti
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic galaxies: individual (SMC)
galaxies: star clusters: individual (ESO 51-SC09)
techniques: photometric
spellingShingle galaxies: individual (SMC)
galaxies: star clusters: individual (ESO 51-SC09)
techniques: photometric
Identification of a new relatively old star cluster in the small magellanic cloud
topic_facet galaxies: individual (SMC)
galaxies: star clusters: individual (ESO 51-SC09)
techniques: photometric
description We present results on the age and metallicity estimates of the astonishingly unstudied Small Magellanic Cloud (SMC) cluster (ESO51-SC09), from CCD BVI photometry obtained at the ESO NTT with the EMMI attached. ESO51-SC09 turns out to be a relatively small cluster (FWHM = 10± 1pc) located ∼4° northward from the galaxy center. We report for the first time a mean cluster age of 7.0± 1.3Gyr and a mean cluster metallicity of [Fe/H]= -1.00± 0.15dex, concluding that ESO51-SC09 belongs to the group of the oldest SMC clusters. We found that the cluster is projected onto an older (age ∼10-13Gyr) and more metal-poor ([Fe/H]= -1.3± 0.2dex) dominant field stellar population, so that the cluster could have reached its current location because of its orbital motion. © 2012 The American Astronomical Society. All rights reserved.
title Identification of a new relatively old star cluster in the small magellanic cloud
title_short Identification of a new relatively old star cluster in the small magellanic cloud
title_full Identification of a new relatively old star cluster in the small magellanic cloud
title_fullStr Identification of a new relatively old star cluster in the small magellanic cloud
title_full_unstemmed Identification of a new relatively old star cluster in the small magellanic cloud
title_sort identification of a new relatively old star cluster in the small magellanic cloud
publishDate 2012
url https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_20418205_v756_n2_p_Piatti
http://hdl.handle.net/20.500.12110/paper_20418205_v756_n2_p_Piatti
_version_ 1768542761290563584

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