J/PAZh/38/95ivo://CDS.VizieR/J/PAZh/38/95CDSFrolov V.N.Ananjevskaja Yu.K.Polyakov E.V.2017-06-29T08:55:20Z2012-02-27T16:05:11ZCDS support team

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

cds-question@unistra.fropen-star-clustersvisible-astronomyWide-band photometryinfrared-photometryproper-motionsThe results of a comprehensive study of the Galactic open cluster NGC 2323 are presented. The positions of stars to a limiting magnitude B<=16.7mag in a 42.5x42.5arcmin area centered on the cluster were measured on six plates from the Pulkovo normal astrograph with a maximum epoch difference of 60yr. The measurements were performed with the Pulkovo "Fantasy" automated measuring system upgraded in 2010. The corresponding areas from the USNO-A2.0, USNO-B1, and 2MASS catalogues were used as additional plates. As a result, the relative proper motions of stars were obtained with a root-mean-square error of 5.85mas/yr. A catalogue of UBV and JHK magnitudes for objects in the investigated area was compiled from available published resources. The astrometric selection of cluster members was made by the maximum likelihood method. A high individual cluster membership probability of a star (P>=80%) served as the first selection criterion. The position of a star on the photometric color-magnitude (V-(B-V), J-(J-K)) diagrams of the cluster was considered as the second criterion. The position of an object on the color- color ((U-B)-(B-V), (J-H)-(J-K)) diagrams served as the third criterion. On the basis of these criteria, it was established that 508 stars are members of NGC 2323. These data were used to refine the physical parameters of the cluster: the mean reddening E(B-V)=0.25mag, the true distance modulus (V-M_V_)=9.85mag, and the cluster age of about 140Myr from the grid of isochrones computed by the Padova group for solar chemical composition. Two tables contain the catalogues of proper motions and photometry for stars in the area. The luminosity and mass functions were constructed. The cluster membership of red and blue giants, variable, double, and multiple stars was considered. The position of the cluster center was improved: alpha=07:02:47.5, delta=-08:20:16 (2000.0).2012PAZh...38...95Fhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PAZh/38/95CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/252 : The USNO-A2.0 Catalogue (Monet+ 1998)J/A+AS/128/131 : UBV photometry of NGC 2323 (Claria+ 1998)J/MNRAS/392/1456 : VIc photometry of NGC 2323 low-mass stars (Irwin+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PAZh/38/95https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PAZh/38/95http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PAZh/38/95https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PAZh/38/95https://vizier.iucaa.in/viz-bin/votable?-source=J/PAZh/38/95http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PAZh/38/95GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/PAZh/38/95/ngc2323 (Stars in the cluster NGC 2323: proper motions, photometry and membership)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/PAZh/38/95/ngc2323?https://vizier.iucaa.in/viz-bin/conesearch/J/PAZh/38/95/ngc2323?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/PAZh/38/95/ngc2323?GETtext/xml+votable180.050000true106.0754094-8.26424690.0055555555555555566/21671 21677 21682 216888.650015785639275e-20 1.7003137259100215e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/PAZh/38/95?format=asciiOpticalInfrareddefaultJ/PAZh/38/95/ngc2323Stars in the cluster NGC 2323: proper motions, photometry and membershiprecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqStar number according to our studymeta.id;meta.mainintprimaryUSNO-A2.0? Star designation in USNO-A 2.0meta.idcharXposRectangular coordinate X of star relative to the star N 680 (at epoch 1930.1)arcminpos.cartesian.x;instr.detfloatYposRectangular coordinate Y of star relative to the star N 680 (at epoch 1930.1)arcminpos.cartesian.y;instr.detfloatpmXProper motion of the star along Xmas/yrpos.pm;pos.cartesian.xfloate_pmXrms uncertainty on pmXmas/yrstat.errorfloatpmYProper motion along Ymas/yrpos.pm;pos.cartesian.yfloate_pmYrms uncertainty on pmYmas/yrstat.errorfloatPlNumber of platesmeta.numberintMmMembership probability%statintbl[bl] "bl" marks blends.meta.notecharNotes? Other identifications (1)meta.notecharVmagV magnitudemagphot.mag;em.opt.VfloatnullableB-VB-V color indexmagphot.color;em.opt.B;em.opt.VfloatnullableU-B? U-B color indexmagphot.color;em.opt.U;em.opt.BfloatnullableRefSource of photometry (1)meta.ref;pos.framecharJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS Ks magnitudemagphot.mag;em.IR.KfloatnullableCM[II III] Cluster membership (2 or 3 criteria)meta.code.membernullableuph[:] : marks raising doubts photometrymeta.code.errorchar_RAComputed Right Ascension for Equinox: J2000degpos.eq.ra;meta.main_DEComputed Declination for Equinox: J2000degpos.eq.dec;meta.main