J/ApJS/116/263ivo://CDS.VizieR/J/ApJS/116/263doi:10.26093/cds/vizier.21160263CDSPiatti A.E.Claria J.J.Bica E.1999-02-27T20:43:18Z1999-02-27T21:40:38ZCDS support team

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

cds-question@unistra.fropen-star-clustersccd-photometryNew CCD VI photometric data for 10 template open clusters with accurately determined fundamental parameters are presented. From the observed V versus V-I diagrams of the clusters, fiducial sequences have been defined and transformed into the M_v_ versus (V-I)_0_ diagram by averaging sequences of template open clusters with similar ages. The resulting composite Mv versus (V-I)_0_ diagram presents a homogeneous set of empirical isochrones in the age range between 5Myr and 4Gyr. These empirical isochrones show an overall very good agreement with those computed from stellar evolutionary models. Theoretical isochrones with moderate overshooting fit the observed main sequences better than the canonical ones for clusters older than 600Myr. The present set of empirical isochrones will be useful for the study of faint reddened open clusters1998ApJS..116..263Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/116/263CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/A+AS/127/423 : VI photometry of Westerlund 1 and 2 (Piatti+ 1998)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/116/263https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/116/263http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/116/263https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/116/263https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/116/263http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/116/263GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/ApJS/116/263/table4Stars in NGC 3680 field magnitudes and colorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar numbermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table5Stars in NGC 3766 field magnitudes and colorsStarStar numbermeta.id;meta.maininte_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.VfloatV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table6Stars in NGC 6025 field magnitudes and colorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar numbermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table7Stars in NGC 6067 field magnitudes and colorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar numbermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table8Stars in NGC 6231 field magnitudes and colorsStarStar numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table9Stars in NGC 6242 field magnitudes and colorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar numbermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table10Stars in NGC 6259 field magnitudes and colorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar numbermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table11Stars in IC 4651 field magnitudes and colorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar numbermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberintJ/ApJS/116/263/table12Stars in NGC 6451 field magnitudes and colorsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar numbermeta.id;meta.mainintXposX positionpixpos.cartesian.x;instr.detfloatYposY positionpixpos.cartesian.y;instr.detfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmag? rms uncertainty on Vmagmagstat.errorfloatnullableV-IV-I colour indexmagphot.color;em.opt.V;em.opt.Ifloate_V-I? rms uncertainty on V-Imagstat.errorfloatnullableo_VmagNumber of observationsmeta.numberint