J/ApJ/664/1102ivo://CDS.VizieR/J/ApJ/664/1102doi:10.26093/cds/vizier.16641102CDSKiminki D.C.Kobulnicky H.A.Kinemuchi K.Irwin J.S.Fryer C.L.,Berrington R.C.Uzpen B.Monson A.J.Pierce M.J.Woosley S.E.2017-10-11T05:13:33Z2009-11-04T16:32:46ZCDS support team

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

cds-question@unistra.frstellar-associationsearly-type-starsradial-velocityWe conducted a radial velocity survey of the Cyg OB2 association over a 6yr (1999-2005) time interval to search for massive close binaries. During this time we obtained 1139 spectra on 146 OB stars to measure mean systemic radial velocities and radial velocity variations. We spectroscopically identify 73 new OB stars for the first time, the majority of which are likely to be association members.2007ApJ...664.1102Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/664/1102CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/101/1408 : Massive stars in Cyg OB2 (Massey+ 1991)J/ApJS/184/84 : Massive Star Forming Region Cygnus OB2 (Wright+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/664/1102https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/664/1102http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/664/1102https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/664/1102https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/664/1102http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/664/1102GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/664/1102/table2 (Early type stars in the direction of Cyg OB2)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/664/1102/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/664/1102/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/664/1102/table2?GETtext/xml+votable180.050000true307.66612541.61413890.005555555555555556Cone search capability for table J/ApJ/664/1102/table3 (Non-OB Stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/664/1102/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/664/1102/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/664/1102/table3?GETtext/xml+votable180.050000true307.726708341.54702780.0055555555555555566/14692 14693 14694https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/664/1102?format=asciiOpticaldefaultJ/ApJ/664/1102/table2Early type stars in the direction of Cyg OB2recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[MT91]Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408)meta.id;meta.mainintprimarySpTypLSpectral classification from literaturesrc.spTypecharSpTypeSpectral classification from this worksrc.spTypecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainAVCalculated visual extinction (1)magphys.absorption;em.opt.VfloatVmagMassey & Thompson (1991, J/AJ/101/1408) V band magnitudemagphot.mag;em.opt.VfloatVMAGAbsolute V band magnitude (2)magphys.magAbs;em.opt.Vfloat(B-V)Massey & Thompson (1991, J/AJ/101/1408) measured (B-V) color indexmagphot.color;em.opt.B;em.opt.Vfloat(B-V)0Wegner (1994MNRAS.270..229W) intrinsic (B-V) color indexmagphot.color;em.opt.B;em.opt.VfloatMPDInitial mass (4)solMassphys.massfloatM0Current mass (3)solMassphys.massfloatDMTrue distance modulusmagphot.mag.distModfloatNoteAdditional note (5)meta.notecharPActPhotometric activity found in literaturespect.indexcharr_PActReference for PAct (6)meta.ref;pos.framecharRVSimbad column added by the CDSmeta.ref.urlcharMT91Display data from Massey et al., Cat. J/AJ/101/1408meta.ref.urlcharJ/ApJ/664/1102/table5Derived radial velocity parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[MT91]Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408)meta.id;meta.mainintSpTypeSpectral classification as determined/accepted by this surveysrc.spTypecharNobsNumber of usable observationsmeta.numberintVavgWeighted average heliocentric velocitykm/sphys.velocfloatVmidSimple average of the largest and smallest observed heliocentric velocitykm/sphys.velocfloatVhMeasure of the velocity semiamplitudekm/sphys.velocfloatVrmsrms heliocentric velocity dispersion of all observationskm/sstat.stdev;phys.velocfloate_VavgMean velocity uncertainty, averaged over all observationskm/sstat.errorfloatProbProbability that {chi}^2^ would be exceeded by chance, given {vu}=Nobs-1 degrees of freedomstat.probabilityfloatBinBinarity (1)meta.notecharn_Bin[ab] note on type (2)meta.notecharJ/ApJ/664/1102/table4Complete table of observations and radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[MT91]Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408)meta.id;meta.mainintHJDHeliocentric Julian date of the observationdtime.epochdoubleHRVHeliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricdoublee_HRVThe 1{sigma} uncertainty on HRVkm/sstat.errorfloatJ/ApJ/664/1102/table3Non-OB StarsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint[MT91]Star designation from Massey & Thompson (1991, Cat. J/AJ/101/1408)meta.id;meta.mainintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainVmagMassey & Thompson (1991, J/AJ/101/1408) V band magnitudemagphot.mag;em.opt.VfloatSpTypeSpectral classificationsrc.spTypechar