J/A+A/521/A39ivo://CDS.VizieR/J/A+A/521/A39doi:10.26093/cds/vizier.35210039CDSOrellana R.B.De Biasi M.S.Bustos Fierro I.H.Calderon J.H.2017-11-28T13:21:43Z2010-10-19T14:50:35ZCDS support team

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

cds-question@unistra.fropen-star-clustersproper-motionsBased on stellar positions and proper motions, we aim to re-analyse the region of the controversial open cluster Collinder 132. Methods. We have developed a model which analyse the proper motion distribution and the stellar density to find moving groups. The astrometric data was obtained from four Carte du Ciel (CdC) and one Astrogaphic Catalogue (AC) plates of the Cordoba Astronomical Observatory collection (Argentina). We detected an open cluster from the field stars and calculated the mean proper motion and the membership probabilities of the stars of the region. We report new coordinates of its centre RAc=108.347deg, DEc=-31.011deg, the components of mean proper motion mu_RA_cosDE=-2.62+/-0.44mas/yr, mu_DE_=4.79+/-0.88mas/yr. 11 stars are astrometric members giving a value of 370 for the cluster angular diameter. 6 stars fullfill astrometric and photometric analysis for being cluster members and locate the cluster at 360pc from the Sun. An over-density in the VPD was found after removing the cluster members, consequently a simple model for the proper motion distribution of an association and of the field was adopted. We report the components of the association mean proper motion mu_RA_cosDE=-1.38+/-0.14mas/yr, mu_DE_=2.26+/-0.16mas/yr. 174 astrometric members were found while 11 members have been located between 417 and 660pc from the Sun by Tycho-2 photometry.2010A&A...521A..39Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/521/A39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/259 : The Tycho-2 Catalogue (Hog+ 2000)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)I/289 : The UCAC2 Catalogue (Zacharias+ 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/521/A39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/521/A39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/521/A39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/521/A39https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/521/A39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/521/A39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/521/A39/ccac (Stellar positions and proper motions of all stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/521/A39/ccac?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/521/A39/ccac?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/521/A39/ccac?GETtext/xml+votable180.050000true109.3432466-29.13081040.005555555555555556Cone search capability for table J/A+A/521/A39/table6 (Astrometric members of Collinder 132 association)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/521/A39/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/521/A39/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/521/A39/table6?GETtext/xml+votable180.050000true108.217508-30.23662040.0055555555555555564/2489 5/9955 9964 6/39738-39739 39742 39813-39815 39845 39860 39874 398803.4014663096393355e-19 5.101838343667421e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/521/A39?format=asciiOpticaldefaultJ/A+A/521/A39/ccacStellar positions and proper motions of all starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintASimbad column added by the CDSmeta.ref.urlcharCCACStar number in CCACmeta.id;meta.mainintprimaryRAJ2000Right ascension at Epoch EpRA (ICRS)degpos.eq.ra;meta.maine_RAJ2000Mean error in right ascension at EpRAarcsecstat.error;pos.eq.rafloatDEJ2000Declination at Epoch EpDE (ICRS)degpos.eq.dec;meta.maine_DEJ2000Mean error in declination at EpDEarcsecstat.error;pos.eq.decfloatNplNumber of plates in the determination of RA and DEmeta.id;instr.plateintEpRAMean epoch of the plates in RAyrtime.epochfloatpmRA? Proper motion in right ascensionmas/yrpos.pm;pos.eq.rafloatnullableEpDEMean epoch of the plates in DEyrtime.epochfloatNepNumber of epochs in the determination of proper motionmeta.numberinte_pmRA? Error of proper motion in right ascensionmas/yrstat.error;pos.pm;pos.eq.rafloatnullablepmDE? Proper motion in declinationmas/yrpos.pm;pos.eq.decfloatnullablee_pmDE? Error of proper motion in declinationmas/yrstat.error;pos.pm;pos.eq.decfloatnullableTYCTycho-2 identifier (Cat. I/259)meta.idcharUCAC2? UCAC2 identifier (Cat. I/289)meta.idintnullableUSNOB1USNOB1.0 identifier (Cat. I/284)meta.idcharJ/A+A/521/A39/table6Astrometric members of Collinder 132 associationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCCACStar number in CCACmeta.id;meta.mainintrDistance to the association cluster centerarcsecmeta.id.assoc;pos.angDistancefloatRAJ2000Right ascension (ICRS)degpos.eq.ra;meta.mainDEJ2000Declination (ICRS)degpos.eq.dec;meta.mainpmRA? Proper motion in right ascension, pmRA*cosDEmas/yrpos.pm;pos.eq.rafloatnullablepmDE? Proper motion in declinationmas/yrpos.pm;pos.eq.decfloatnullablePaProbability of appartenancemeta.code.memberfloatTYCTycho-2 identifier (Cat. I/259)meta.idcharBTmag? Tycho-2 BT magnitudemagphot.mag;em.opt.Bfloatnullablee_BTmag? rms uncertainty on BTmagmagstat.error;phot.mag;em.opt.BfloatnullableVTmag? Tycho-2 VT magnitudemagphot.mag;em.opt.Vfloatnullablee_VTmag? rms uncertainty on VTmagmagstat.error;phot.mag;em.opt.Vfloatnullable