J/A+A/381/65ivo://CDS.VizieR/J/A+A/381/65doi:10.26093/cds/vizier.33810065CDSNilakshi N.Sagar R.2001-12-28T21:14:12Z2001-12-28T22:14:01ZCDS support team

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

cds-question@unistra.fropen-star-clustersccd-photometryThe CCD observations of the rich open star cluster NGC 2099 and its surrounding field region have been carried out up to a limiting magnitude of V~22mag in B, V and I passbands for the first time. A total of ~12000 stars have been observed in the area of about 24'x24' in the cluster region, as well as ~2180 stars in the ~ 12'x12' area of the field region located ~45' away from the cluster center. The cluster parameters determined by fitting the convective core overshoot isochrones in the V, (B-V) and V, (V-I) diagrams are E(B-V)=0.30+/-0.40mag, distance=1360+/-100pc, age=400Myr and metallicity Z=0.008.2002A&A...381...65Nhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/381/65CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/381/65https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/381/65http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/381/65https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/381/65https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/381/65http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/381/65GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/381/65/table4Relative positions and BVI magnitudes in NGC 2099recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRegion[CF] Cluster (C) or Field (F) regionobs.fieldcharStarSequential star numbermeta.id;meta.mainintXposX position (1)pixpos.cartesian.x;instr.detfloatYposY position (1)pixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.VfloatB-V? B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableV-I? V-I colour indexmagphot.color;em.opt.V;em.opt.Ifloatnullablee_Imag? DAOPHOT error in I passbandmagstat.errorfloatnullablee_VmagDAOPHOT error in V passbandmagstat.errorfloate_Bmag? DAOPHOT error in B passbandmagstat.errorfloatnullableMembMembership proper motion (KM) and photometric (PM) membershipmeta.code.memberchar