J/A+A/419/533ivo://CDS.VizieR/J/A+A/419/533doi:10.26093/cds/vizier.34190533CDSBlecha A.Meylan G.North P.Royer F.2004-06-26T18:43:55Z2004-06-26T18:43:38ZCDS support team

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

cds-question@unistra.frglobular-star-clustersvisible-astronomybroad-band-photometryproper-motionsradial-velocityRecently, combining radial velocities from Keck/HIRES echelle spectra with published proper motion membership probabilities, Cote et al. (2002ApJ...574..783C) observed a sample of 21 stars, probable members of Palomar 13, a globular cluster in the Galactic halo. Their projected velocity dispersion sigma_p_=2.2+/-0.4km/s gives a mass-to-light ratio M/L_V_=40^+24^_-17_, about one order of magnitude larger than the usual estimate for globular clusters. We present here radial velocities measured from three different CCD frames of commissioning observations obtained with the new ESO/VLT instrument FLAMES (Fibre Large Array Multi Element Spectrograph). From these data, now publicly available, we measure the homogeneous radial velocities of eight probable members of this globular cluster. A new projected velocity dispersion sigma_p_=0.6-0.9+/-0.3km/s implies Palomar 13 mass-to-light ratio M/L_V_=3-7, similar to the usual value for globular clusters. We discuss briefly the two most obvious reasons for the previous unusual mass-to-light ratio finding: binaries, now clearly detected, and more homogeneous data from the multi-fibre FLAMES spectrograph.2004A&A...419..533Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/419/533CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+AS/121/499 : BV and rg photometry of Pal 13 (Borissova+ 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/419/533https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/419/533http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/419/533https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/419/533https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/419/533http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/419/533GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/419/533/table2 (Barycentric radial velocities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/419/533/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/419/533/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/419/533/table2?GETtext/xml+votable180.050000true346.6727112.824580.005555555555555556Cone search capability for table J/A+A/419/533/table3 (Membership probabilities)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/419/533/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/419/533/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/419/533/table3?GETtext/xml+votable180.050000true346.67312512.78291670.0055555555555555566/19979 20001https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/419/533?format=asciiOpticaldefaultJ/A+A/419/533/table2Barycentric radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqIdentification number (this study)meta.id;meta.mainintprimaryCDM? Identification number (1)meta.id.crossintnullablePMemb[0/1] Membership probability (this study)meta.code.memberintT3indicates that the star is also in table3.meta.refcharPMembCDM[0/1]? Membership probability (1)meta.code.memberintnullableRAdegRight ascension (2000.0)degpos.eq.ra;meta.mainDEdegDeclination (2000.0)degpos.eq.dec;meta.mainRDistance to the cluster centerarcsecpos.angDistanceintVmagV magnitude (2)magphot.mag;em.opt.VfloatRV1? Radial velocity for FLAMES epoch 1, 2002/09/01km/sphys.veloc;pos.heliocentricfloatnullableRV2? Radial velocity for FLAMES epoch 2, 2002/09/01km/sphys.veloc;pos.heliocentricfloatnullableRV3? Radial velocity for FLAMES epoch 3, 2002/09/03km/sphys.veloc;pos.heliocentricfloatnullableo_RV1Number of valid FLAMES measurementsmeta.numberintq_RV1Cross-correlation-peak quality (3)meta.code.qualcharSigma? Standard deviation associated to FLAMES RVkm/sstat.stdevfloatnullableRVMean radial velocity from FLAMES datakm/sphys.veloc;pos.heliocentricfloate_RVEstimated error on mean RVkm/sstat.errorfloatRVCDM? Mean radial velocity (1)km/sphys.veloc;pos.heliocentricfloatnullableJ/A+A/419/533/table3Membership probabilitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeqIdentification number (this study)meta.id;meta.mainintRA2000Right ascension hours (2000.0)pos.eq.ra;meta.mainDE2000Declination degrees (2000.0)pos.eq.dec;meta.mainpmRAProper motion mu_alpha (1)mas/yrpos.pm;pos.eq.rafloate_pmRAError on mu_alpha (1)mas/yrstat.errorfloatpmDEProper motion mu_delta (1)mas/yrpos.pm;pos.eq.decfloate_pmDEError on mu_delta (1)mas/yrstat.errorfloatPMembMembership probability from proper motion (1)%stat.fit.goodnessintRVMean radial velocity from FLAMES datakm/sphys.veloc;pos.heliocentricfloatUmagU magnitude (1)magphot.mag;em.opt.Ufloate_UmagError on U magnitude (1)magstat.errorfloatBmagB magnitude (1)magphot.mag;em.opt.Bfloate_BmagError on B magnitude (1)magstat.errorfloatVmagV magnitude (1)magphot.mag;em.opt.Vfloate_VmagError on V magnitude (1)magstat.errorfloatCMDPosition in the CMD (2)src.classchar