J/A+AS/121/451ivo://CDS.VizieR/J/A+AS/121/451CDSGuarnieri M.D.Carraro G.1997-12-09T18:26:32Z1997-12-09T19:26:29ZCDS support team

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

cds-question@unistra.fropen-star-clustersphotometryA colour magnitude diagram (CMD) extending to V=~19mag is given for 444 stars in the region of the galactic cluster Berkeley 66. The V and I photometry of a nearby field is also reported. This object appears very faint, highly contaminated by foreground stars and very reddened. The apparent distance modulus (m-M) and the colour excess E_V-I_ are guessed to be 17.5 and 1.1, respectively, with an uncertainty of at least 30%. Adopting these values the comparison of the CMD with theoretical isochrones from the Padova group provides an age around 1.0Gyr.1997A&AS..121..451Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/121/451CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/121/451https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/121/451http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/121/451https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/121/451https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/121/451http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/121/451GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/121/451/table2VI photometryVmagV magnitudemagphot.mag;em.opt.VfloatImagI magnitudemagphot.mag;em.opt.IfloatV-IV-I color indexmagphot.color;em.opt.V;em.opt.IfloatXposX coordinate (1 pix = 0.47")pixpos.cartesian.x;instr.detdoubleYposY coordinate (1 pix = 0.47")pixpos.cartesian.y;instr.detdoubleIDIdentification numbermeta.id;meta.mainintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint