J/AJ/148/61ivo://CDS.VizieR/J/AJ/148/61doi:10.26093/cds/vizier.51480061CDSTofflemire B.M.Gosnell N.M.Mathieu R.D.Platais I.2014-12-11T17:19:12Z2014-11-26T08:59:38ZCDS support team

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

cds-question@unistra.fropen-star-clustersradial-velocityThe open cluster NGC 6791 has been the focus of much recent study due to its intriguing combination of old age and high metallicity (~8Gyr, [Fe/H]=+0.30), as well as its location within the Kepler field. As part of the WIYN Open Cluster Study, we present precise ({sigma}=0.38km/s) radial velocities for proper motion candidate members of NGC 6791 from Platais et al. Our survey, extending down to g' ~ 16.8, is comprised of the evolved cluster population, including blue stragglers, giants, and horizontal branch stars. Of the 280 proper-motion-selected stars above our magnitude limit, 93% have at least one radial velocity measurement and 79% have three measurements over the course of at least 200 days, sufficient for secure radial-velocity-determined membership of non-velocity-variable stars. The Platais et al. proper motion catalog includes 12 anomalous horizontal branch candidates blueward of the red clump, of which we find only 4 to be cluster members. Three fall slightly blueward of the red clump and the fourth is consistent with being a blue straggler. The cleaned color-magnitude diagram shows a richly populated red giant branch and a blue straggler population. Half of the blue stragglers are in binaries. From our radial velocity measurement distribution, we find the cluster's radial velocity dispersion to be {sigma}_c_=0.62+/-0.10km/s. This corresponds to a dynamical mass of ~4600M_{sun}_.2014AJ....148...61Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/148/61CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/543/A106 : UBVRI photometry in NGC 6791 (Brogaard+, 2012)J/ApJ/729/L10 : KIC stars properties in NGC 6791 and NGC 6819 (Basu+, 2011)J/AJ/139/1383 : Radial velocities in M35 (NGC 2168) (Geller+, 2010)J/AJ/135/2264 : Stellar radial velocities in NGC 188 (Geller+, 2008)J/A+A/492/171 : VIc light curves of NGC 6791 V20 (Grundahl+, 2008)J/A+A/471/515 : V light curves of NGC 6791 variable stars (De Marchi+, 2007)J/AJ/129/2856 : Variable stars in NGC 6791 (Mochejska+, 2005)J/PASP/115/413 : BVI photometry in the open cluster NGC 6791 (Stetson+, 2003)J/A+AS/114/1 : CCD UBVI photometry of NGC 6791 (Kaluzny+, 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/148/61https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/148/61http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/148/61https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/148/61https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/148/61http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/148/61GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/148/61/table1 (Radial velocity summary table)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/148/61/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/148/61/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/148/61/table1?GETtext/xml+votable180.050000true290.22962537.78786110.005555555555555556Cone search capability for table J/AJ/148/61/table4 (NGC 6791 blue horizontal branch (HB) proper motion candidate members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/148/61/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/148/61/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/148/61/table4?GETtext/xml+votable180.050000true290.191666737.79855560.0055555555555555566/14573 14575 14584 14586https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/148/61?format=asciiOpticaldefaultJ/AJ/148/61/table1Radial velocity summary tablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWOCS[1002/102050] WIYN Open Cluster Study number \linkRole{radial velocity data (table2) }meta.id;meta.mainintprimaryRAJ2000Hour of Right Ascension (J2000) (G1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (G1)pos.eq.dec;meta.maing'magThe g' band magnitude (G1)magphot.mag;em.opt.Bfloatg'-r'The (g'-r') color index (G1)magphot.color;em.opt.B;em.opt.VfloatNobs[0/14] Number of radial velocity measurementsmeta.number;spect.dopplerVelocint<RV>? Mean radial velocitykm/sspect.dopplerVeloc;stat.meandoublenullablePpm[0/99] Proper motion membership probability (G1)%stat.probability;pos.pmintPrv[0/99]? Radial velocity membership probability%stat.probability;spect.dopplerVelocintnullablef_Prv[*] The probability remains uncertain until a binary orbital solution is foundmeta.codechare/i? Radial velocity standard deviation to radial velocity precision ratioinstr.precision;arith.ratiofloatnullableComAdditional comment (G2)meta.noteMmbMembership class (1)srccharvsini? Rotational velocity vsin(i) for rapidly rotating starkm/sphys.veloc.rotatfloatnullableJ/AJ/148/61/table2Radial velocity data tablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWOCS[1002/102050] WIYN Open Cluster Study number \linkRole{radial velocity summary and membership (table1) }meta.id;meta.mainintHJDHeliocentric Julian Date (HJD-2450000)dtime.epoch;obsdoubleRV1Primary radial velocitykm/sspect.dopplerVelocfloatCH1[0/1] Correlation Height of primarystat.correlationfloatRV2? Secondary radial velocity (1)km/sspect.dopplerVelocfloatnullableCH2[0/1]? Correlation Height of secondary (1)stat.correlationfloatnullableJ/AJ/148/61/table4NGC 6791 blue horizontal branch (HB) proper motion candidate membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWOCS[2001/46008] WIYN Open Cluster Study numbermeta.id;meta.mainintP11Number in Platais et al. (2011ApJ...733L...1P)meta.idintRAJ2000Hour of Right Ascension (J2000) (G1)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000) (G1)pos.eq.dec;meta.maing'magThe g' band magnitude (G1)magphot.mag;em.opt.Bfloatg'-r'The (g'-r') color index (G1)magphot.color;em.opt.B;em.opt.VfloatPpm[0/99] Proper motion membership probability (G1)%stat.probability;pos.pmint<RV>Mean radial velocitykm/sspect.dopplerVeloc;stat.meanfloate_<RV>1{sigma} error in <RV>km/sstat.errorfloatPrv[0/99] Radial velocity membership probability%stat.probability;spect.dopplerVelocintf_Prv[*] The probability remains uncertain until a binary orbital solution is foundmeta.codecharS03? Number in Stetson et al. 2003 (J/PASP/115/413)meta.idintnullableK65Identification in Kinman (1965ApJ...142..655K)meta.idcharComAdditional comment (G2)meta.notechar