J/ApJ/821/8ivo://CDS.VizieR/J/ApJ/821/8doi:10.26093/cds/vizier.18210008CDSKounkel M.Hartmann L.Tobin J.J.Mateo M.Bailey III J.I.Spencer M.2020-07-01T09:52:03Z2016-07-07T13:33:24ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsradial-velocityeffective-temperatureWe examine the spectroscopic binary population for two massive nearby regions of clustered star formation, the Orion Nebula Cluster (ONC) and NGC 2264, supplementing the data presented by Tobin et al. (2009, J/ApJ/697/1103) with more recent observations and more extensive analysis. The inferred multiplicity fraction up to 10 au based on these observations is 5.3+/-1.2% for NGC 2264 and 5.8+/-1.1% for the ONC; these values are consistent with the distribution of binaries in the field in the relevant parameter range. Eight of the multiple systems in the sample have enough epochs to perform an initial fit for the orbital parameters. Two of these sources are double-lined spectroscopic binaries; for them, we determine the mass ratio. Our reanalysis of the distribution of stellar radial velocities toward these clusters presents a significantly better agreement between stellar and gas kinematics than was previously thought.2016ApJ...821....8Khttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/821/8CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/818/59 : IN-SYNC. IV. YSOs in Orion A (Da Rio+, 2016)J/AJ/150/108 : Spectroscopy and HST imaging in ONC (O'Dell+, 2015)J/AJ/149/119 : Radial velocities of stars in NGC 2264 (Tobin+, 2015)J/A+A/564/A29 : Optical and near-infrared photometry in Orion A (Bouy+, 2014)J/AJ/146/85 : Spectral types of optical stars in ONC (Hillenbrand+, 2013)J/ApJS/190/1 : A survey of stellar families (Raghavan+, 2010)J/AJ/138/963 : Rotation of NGC 2264 members (Baxter+, 2009)J/ApJ/697/1103 : Kinematics of Orion Nebula Cluster (Tobin+, 2009)J/ApJ/676/1109 : Velocities of stars in the ONC (Furesz+, 2008)J/AJ/134/2272 : Visual binaries in the Orion Nebula Cluster (Reipurth+, 2007)J/A+A/458/461 : Binary stars in the Orion Nebula Cluster (Koehler+, 2006)J/ApJ/648/1090 : Radial velocities of NGC 2264 stars (Furesz+, 2006)J/AJ/129/363 : Spectroscopy in Orion Nebula Cluster (Sicilia-Aguilar+, 2005)J/AJ/114/2644 : UBVRIHa photometry of NGC2264 (Sung+, 1997)J/AJ/113/1733 : Orion Nebula Cluster population (Hillenbrand 1997)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/821/8https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/821/8http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/821/8https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/821/8https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/821/8http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/821/8GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/821/8/sources (List of sources from tables 2 and 3; table added by CDS)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/821/8/sources?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/821/8/sources?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/821/8/sources?GETtext/xml+votable180.050000true83.3247917-5.36072220.005555555555555556Cone search capability for table J/ApJ/821/8/table2 (Sources that show no variation in radial velocity between multiple observations (1927 unique sources))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/821/8/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/821/8/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/821/8/table2?GETtext/xml+votable180.050000true83.3247917-5.36072220.005555555555555556Cone search capability for table J/ApJ/821/8/table3 (Sources with variable radial velocity (130 unique sources))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/821/8/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/821/8/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/821/8/table3?GETtext/xml+votable180.050000true83.3724167-5.13030560.005555555555555556Cone search capability for table J/ApJ/821/8/table4 (Sources that were surveyed for the presence of Li I)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/821/8/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/821/8/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/821/8/table4?GETtext/xml+votable180.050000true83.564375-6.11530560.0055555555555555565/5909 6/21436 21438 21439 22804 22805 22848https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/821/8?format=asciidefaultJ/ApJ/821/8/sourcesList of sources from tables 2 and 3; table added by CDSSimbadNameSimbad column added by the CDSmeta.idcharVPVelocity Plotmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVar"no"=no variation in RV (objects from table 2); "var"=variable RV (objects from table 3)meta.code;src.varcharSeq[1/2057] RV Sequencial Running numbermeta.id;meta.mainintprimaryf_Seq[c] Variability Flag (G1)meta.codecharReg[0/1] Region: 0=ONC; 1=NGC 2264meta.codeintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainOCatDisplay the Orion catalogs data within 0.5" (from Bouy+, 2014, J/A+A/564/A29 and Tobin+, 2009, J/ApJ/697/1103)meta.ref.urlintnullableT15Display NGC 2264 catalog data within 0.5" from Tobin+, 2015, J/AJ/149/119meta.ref.urlintnullableNvNumber of radial velocity measures for this sourcemeta.numberintnullableLiImeta.ref.urlintnullable2MDisplay the 2MASS data (Cutri+ 2003, II/246) within 0.5"meta.ref.urlcharJ/ApJ/821/8/table2Sources that show no variation in radial velocity between multiple observations (1927 unique sources)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[1/2057] RV Sequencial Running number (1)meta.id;meta.mainintReg[0/1] Region: 0=ONC; 1=NGC 2264meta.codeintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainJDJulian Date of Observationdtime.epochdoubleHRV[-93/100] Heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_HRV[0.2/15.1] Uncertainty in HRVkm/sstat.errorfloatR[3/41] Cross-correlation signal to noisestat.snrfloatTeff[3500/7000] Effective Temperature from spectral synthesisKphys.temperature.effectiveintRR[0y] Filtering parameters (G2)meta.codecharInstInstrument and line used in Observation (Hectochelle; MIKE; or M2FS H{alpha}, Li, MgI, Li+H{alpha})instr.setup;obscharJ/ApJ/821/8/table3Sources with variable radial velocity (130 unique sources)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[10/2039] RV Sequencial Running numbermeta.id;meta.mainintf_Seq[c] Variability Flag (G1)meta.codecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainJDJulian Date of Observationdtime.epochdoubleHRV1[-95/100]? Velocity of first componentkm/sphys.velocfloatnullablee_HRV1[0.3/22]? Uncertainty in HRV1km/sstat.errorfloatnullableHRV2[-58/114]? Velocity of second component (1)km/sphys.velocfloatnullablee_HRV2[2/5]? Uncertainty in HRV2km/sstat.errorfloatnullableR[3/38] Cross-correlation signal to noisestat.snrfloatTeff[3500/7000] Effective Temperature from spectral synthesisKphys.temperature.effectiveintRR[0y] Filtering parameters (G2)meta.codecharInstInstrument and line used in Observation (Hectochelle; MIKE; or M2FS H{alpha}, Li, MgI, or Li+H{alpha})instr.setup;obscharJ/ApJ/821/8/table4Sources that were surveyed for the presence of Li IrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSeq[113/2268] RV Sequencial Running number (1)meta.id;meta.mainintRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainHRV[-35.4/82.1] Heliocentric Radial Velocity (2)km/sspect.dopplerVeloc;pos.heliocentricfloate_HRV[0.3/13] Uncertainty in HRVkm/sstat.errorfloatR-Li[3/25.2] Cross-correlation signal to noisestat.snrfloatl-Li[6708.1/6709.1]? Line center for LiI6707{AA} (3)0.1nmem.wlfloatnullableEW-Li[0.1/1.9]? Equivalent Width of LiI6707{AA}, in Angstroms (4)0.1nmspect.line.eqWidthfloatnullableTeff[3500/7000] Effective Temperature from spectral synthesisKphys.temperature.effectiveint