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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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_20418205_v756_n2_p_Piatti |
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todo:paper_20418205_v756_n2_p_Piatti2023-10-03T16:38:02Z Identification of a new relatively old star cluster in the small magellanic cloud Piatti, A.E. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar 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 Piatti, A.E. 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. |
| format |
JOUR |
| author |
Piatti, A.E. |
| author_facet |
Piatti, A.E. |
| author_sort |
Piatti, A.E. |
| 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 |
| url |
http://hdl.handle.net/20.500.12110/paper_20418205_v756_n2_p_Piatti |
| work_keys_str_mv |
AT piattiae identificationofanewrelativelyoldstarclusterinthesmallmagellaniccloud |
| _version_ |
1807317862340100096 |