J/MNRAS/430/3350ivo://CDS.VizieR/J/MNRAS/430/3350doi:10.26093/cds/vizier.74303350CDSYadav R.K.S.Sariya D.P.Sagar R.2024-07-21T20:14:15Z2014-06-10T10:09:18ZCDS support team

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

cds-question@unistra.fropen-star-clustersproper-motionsphotometryRelative proper motions (PMs) and cluster membership probabilities (P_mu_) were derived for ~2500 stars in the field of the open star cluster NGC 3766. The cluster was observed in the B and V broad-band filters at two epochs separated by ~6yr using a wide-field imager mounted on the WFI@ESO 2.2-m telescope. All CCD frames were reduced using the astrometric techniques described by Anderson et al. (2006A&A...454.1029A, Paper I). The PM rms error for stars brighter than V~15mag is 2.0mas/yr, but it gradually increases up to ~4mas/yr at V~20mag. Using PM data, membership probabilities were derived for the stars in the region of the cluster. They indicate that one Ap and three Be stars are members of the cluster. A reddening of E(B-V)=0.22+/-0.05mag, a distance of 2.5+/-0.5kpc and an age of ~20Myr were derived using stars with P_mu_>70 per cent. A mass function slope of x=1.60+/-0.10 was derived for the cluster, and the cluster was found to be dynamically relaxed. Finally, we provide positions, calibrated B and V magnitudes, relative PMs and membership probabilities for the stars in the field of NGC 3766. We have produced a catalogue that is electronically available to the astronomical community.2013MNRAS.430.3350Yhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/430/3350CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/622/1052 : byH{alpha} photometry of NGC 3766 (McSwain+, 2005)J/A+A/554/A108 : Periodic variables in NGC 3766 (Mowlavi+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/430/3350https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/430/3350http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/430/3350https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/430/3350https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/430/3350http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/430/3350GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/430/3350/table3 (Catalogue of proper motions with their corresponding uncertainties and membership probabilities for about 2500 stars in the region of NGC 3766)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/430/3350/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/430/3350/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/430/3350/table3?GETtext/xml+votable180.050000true173.953125-61.86297220.0055555555555555566/37901 379123.322582951404819e-19 4.920466254354166e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/430/3350?format=asciiOpticaldefaultJ/MNRAS/430/3350/table3Catalogue of proper motions with their corresponding uncertainties and membership probabilities for about 2500 stars in the region of NGC 3766DEJ2000Declination (J2000)pos.eq.dec;meta.mainSeq[1/2468] Sequential numbermeta.recordintprimaryRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainXposX positionpixpos.cartesian.x;instr.detdoubleYposY positionpixpos.cartesian.y;instr.detdoublepmRAProper motion along RA, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloate_pmRArms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion along DEmas/yrpos.pm;pos.eq.decfloate_pmDErms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatBmagB magnitudemagphot.mag;em.opt.Bfloate_Bmagrms uncertainty on Bmagmagstat.error;phot.mag;em.opt.BfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.mag;em.opt.VfloatPmu[0/100] Membership probability from proper motion%meta.code.memberint