J/A+A/374/504ivo://CDS.VizieR/J/A+A/374/504doi:10.26093/cds/vizier.33740504CDSPandeyA.K.NilakshiOguraK.SagarR.TarusawaK.2013-05-08T07:21:45Z2005-09-01T13:37:51ZCDS support team

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

cds-question@unistra.fropen-star-clustersccd-photometryinfrared-photometryvisible-astronomybroad-band-photometryCCD UBVIc photometry in a wide field around the open cluster NGC 7654 has been carried out for ~17860 stars, down to V~20. The reddening across the cluster region is found to be variable with E(B-V) from 0.46mag to 0.80mag. The cluster is situated at a distance of 1380+/-70pc. The colour magnitude diagrams show a large age spread in the ages. Star formation was biased towards relatively higher masses during the early phase of star formation whereas most of the low mass stars of the cluster were formed during the later phase. The star formation seems to have been a gradual process that proceeded sequentially in mass and terminated with the formation of most massive stars. The present data do not support a uniform mass function (MF) for different regions in the cluster.2001A&A...374..504Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/374/504CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/374/504https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/374/504http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/374/504https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/374/504https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/374/504http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/374/504GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/374/504/table2 (UBVIc photometric data of the stars in the field of NGC 7654)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/374/504/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/374/504/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/374/504/table2?GETtext/xml+votable180.050000true351.132825661.56689330.0055555555555555566/14311 14320 143223.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/374/504?format=asciiOpticalInfrareddefaultJ/A+A/374/504/table2UBVIc photometric data of the stars in the field of NGC 7654recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoIdentification number of the starsmeta.id;meta.mainintXposPixel coordinate (1)pixpos.framedoubleYposPixel coordinate (1)pixpos.framedoubleVmagMagnitude in the V (Johnson) bandmagphot.mag;em.opt.Vfloate_VmagErrors in the V (Johnson) bandmagstat.error;phot.mag;em.opt.VfloatB-V? B-V colour indexmagphot.color;em.opt.B;em.opt.VfloatnullableV-I? V-I (Cousins) colour indexmagphot.color;em.opt.V;em.opt.IfloatnullableU-B? U-B colour indexmagphot.color;em.opt.U;em.opt.Bfloatnullablee_Imag? Errors in the I (Cousins) bandmagstat.error;phot.mag;em.opt.Ifloatnullablee_Bmag? Errors in the B (Johnson) bandmagstat.error;phot.mag;em.opt.Bfloatnullablee_Umag? Errors in the U (Johnson) bandmagstat.error;phot.mag;em.opt.Ufloatnullablechi{chi} parameter in the V (Johnson) band (3)stat.errorfloatSharpSharpness parameter in the V (Johnson) band (2)stat.fit.paramfloatrRadial distance of the stars from the cluster center (X=855, Y=755)arcsecphys.angSizedouble_RAPosition computed from a comparison with UCAC4 (Cat. I/322) ({sigma}=0.2'') (right ascension part)degpos.eq.ra;meta.main_DEPosition computed from a comparison with UCAC4 (Cat. I/322) ({sigma}=0.2'') (declination part)degpos.eq.dec;meta.main