J/ApJ/756/L32ivo://CDS.VizieR/J/ApJ/756/L32doi:10.26093/cds/vizier.17569032CDSPiatti A.E.2017-09-22T16:16:05Z2014-06-23T12:58:03ZCDS support team

CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France

cds-question@unistra.frmagellanic-cloudsopen-star-clustersinfrared-photometryvisible-astronomyphotometryWe present results on the age and metallicity estimates of the astonishingly unstudied Small Magellanic Cloud (SMC) cluster (ESO 51-SC09), from CCD BVI photometry obtained at the ESO NTT with the EMMI attached. ESO 51-SC09 turns out to be a relatively small cluster (FWHM=10+/-1pc) located ~4{deg} 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+/-0.15 dex, concluding that ESO 51-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+/-0.2 dex) dominant field stellar population, so that the cluster could have reached its current location because of its orbital motion.2012ApJ...756L..32Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/756/L32CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/eso : ESO Science Archive Catalog (ESO, 1991-2014)II/183 : UBVRI Photometric Standards (Landolt 1992)VII/34 : ESO/Uppsala Survey of the ESO(B) Atlas (Lauberts 1982)J/MNRAS/417/1559 : CT1T2 photometry in 14 SMC star clusters (Piatti+, 2011)J/MNRAS/403/996 : Clusters and associations in SMC and LMC (Bonatto+, 2010)J/A+A/517/A50 : Ages of young SMC/LMC star clusters (Glatt+, 2010)J/AJ/136/1703 : Ridgelines of six intermediate-age SMC clusters (Glatt+, 2008)J/MNRAS/389/678 : Cat. of extended objects in Magellanic Clouds (Bica+, 2008)J/ApJ/562/303 : Old Stellar Populations of the SMC (Dolphin+ 2001)J/AJ/119/1214 : Census of star clusters in the SMC (Bica+, 2000)J/AJ/116/2395 : BV photometry in five SMC clusters (Mighell+, 1998)J/AJ/116/723 : LMC star clusters ages and metallicity (Bica+ 1998)J/ApJS/101/41 : SMC and Bridge extended catalog (Bica+ 1995)J/AJ/87/1165 : Reddening Maps derived from HI & Galaxy Cnts (Burstein+ 1982)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/756/L32https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/756/L32http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/756/L32https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/756/L32https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/756/L32http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/756/L32GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/756/L32/table1 (BVI data of stars in the field of ESO 51-SC09)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/756/L32/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/756/L32/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/756/L32/table1?GETtext/xml+votable180.050000true14.83920528-68.910628890.0055555555555555566/33338 334243.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/756/L32?format=asciiOpticalInfrareddefaultJ/ApJ/756/L32/table1BVI data of stars in the field of ESO 51-SC09Seq[1/1677] Star identification number (<[P2012] NNNN> in Simbad)meta.id;meta.mainintprimaryXpixThe X pixel coordinatepixpos.cartesian.xdoubleYpixThe Y pixel coordinatepixpos.cartesian.ydoubleVmag[16.55/24.86] The NTT V band magnitudemagphot.mag;em.opt.Vfloate_Vmag[0.002/0.6] The 1{sigma} uncertainty in Vmagmagstat.error;phot.mag;em.opt.VfloatB-VThe (B-V) color indexmagphot.color;em.opt.B;em.opt.Vfloate_B-VThe 1{sigma} uncertainty in B-Vmagstat.error;phot.color;em.opt.BfloatV-IThe (V-I) color indexmagphot.color;em.opt.V;em.opt.Ifloate_V-IThe 1{sigma} uncertainty in V-Imagstat.error;phot.color;em.opt.Vfloat_RASimbad column added by the CDSdegpos.eq.ra;meta.main_DESimbad column added by the CDSdegpos.eq.dec;meta.main