J/ApJ/697/1103ivo://CDS.VizieR/J/ApJ/697/1103doi:10.26093/cds/vizier.16971103CDSTobin J.J.Hartmann L.Furesz G.Mateo M.Megeath S.T.2017-07-11T13:08:13Z2011-06-20T14:31:08ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsradial-velocityopen-star-clustersWe present a kinematic study of the Orion Nebula Cluster (ONC) based upon RVs measured by multifiber echelle spectroscopy at the 6.5m MMT and Magellan telescopes. Velocities are reported for 1613 stars, with multi-epoch data for 727 objects as part of our continuing effort to detect and analyze spectroscopic binaries (SBs). We confirm and extend the results of Furesz et al. (2008, Cat. J/ApJ/676/1109), showing that the ONC is not relaxed, consistent with its youth, and that the stars generally follow the position-velocity structure of the moderate density gas in the region, traced by ^13^CO. The additional RVs we have measured enable us to probe some discrepancies between stellar and gaseous structure which can be attributed to binary motion and the inclusion of nonmembers in our kinematic sample. Our multi-epoch data allow us to identify 89 SBs; more will be found as we continue monitoring. Our results reinforce the idea that the ONC is a cluster in formation, and thus provide a valuable testing ground for theory.2009ApJ...697.1103Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/697/1103CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toII/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)J/ApJ/676/1109 : Velocities of stars in the ONC (Furesz+, 2008)J/AJ/129/363 : Spectroscopy in Orion Nebula Cluster (Sicilia-Aguilar+, 2005)J/A+A/375/130 : New PMS spectroscopic binaries in Orion (Covino+ 2001)J/AJ/121/1676 : ONC low-mass stars photometry (Rebull+, 2001)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/697/1103https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/697/1103http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/697/1103https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/697/1103https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/697/1103http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/697/1103GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/697/1103/table3 (Velocity summary)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/697/1103/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/697/1103/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/697/1103/table3?GETtext/xml+votable180.050000true83.32482083-5.360730560.005555555555555556Cone search capability for table J/ApJ/697/1103/sb (Spectroscopic binaries from velocity shifts or cross-correlation)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/697/1103/sb?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/697/1103/sb?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/697/1103/sb?GETtext/xml+votable180.050000true83.35998333-5.277950.005555555555555556Cone search capability for table J/ApJ/697/1103/obs (MIKE (fields A-D) and Hectochelle (fiels F) observations)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/697/1103/obs?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/697/1103/obs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/697/1103/obs?GETtext/xml+votable180.050000true83.8391667-5.96077780.0055555555555555566/21435 21436 21438 21439 22804 22805 228488.650015785639275e-20 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/697/1103?format=asciiOpticaldefaultJ/ApJ/697/1103/table3Velocity summaryo_HRVNumber of observations in HRV with R>6.0 (1)meta.numberintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMSimbad column added by the CDSmeta.ref.urlchar2MASS2MASS identification (HHMMSSs+DDMMSS)meta.id;meta.maincharprimaryHRV? Average radial velocity (1)km/sspect.dopplerVeloc;stat.meanfloatnullablee_HRV? Uncertainty in HRV (1)km/sstat.errorfloatnullableVmag? The V band magnitude (2)magphot.mag;em.opt.VfloatnullableV-I? The (V-I) color index (2)magphot.color;em.opt.V;em.opt.Ifloatnullablemult[1/2] Multiplicity (2 = close binary)meta.code.multipintFieldField identification(s) (G1)meta.id;obs.fieldchar2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainJ/ApJ/697/1103/sbSpectroscopic binaries from velocity shifts or cross-correlationrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintMSimbad column added by the CDSmeta.codechar2MASS2MASS identification (HHMMSSs+DDMMSS)meta.id;meta.mainchar<RV>Average radial velocity (1)km/sspect.dopplerVeloc;stat.meanfloate_<RV><RV> maximum uncertaintykm/sstat.errorfloatmaxDVMaximum velocity difference between componentskm/sphys.veloc;arith.diff;stat.maxfloate_maxDV? maxDV uncertainty (only for table 11)km/sstat.errorfloatnullablelog(P)? {chi}^2^ probability (only for table 11)stat.fit.goodnessfloatnullablechi2? Reduced {chi}^2^ of RV (only for table 11)stat.fit.chi2floatnullableNobsNumber of observations with R>4.5 (for table 11) or R>6.0 (for table 12)meta.numberintVmag? V-band magnitude (2)magphot.mag;em.opt.VfloatnullableV-I? V-I color index (2)magphot.color;em.opt.V;em.opt.IfloatnullableKsmag2MASS Ks-band magnitudemagphot.mag;em.IR.KfloatKs-[3.6]? Ks-3.6um IRAC band color indexmagphot.color;em.IR;em.IRfloatnullableSB[1/2] 1 for single-line binary (SB1) or 2 for double-line binary (SB2)meta.codeintq_SB[1/2]? 1: High confidence in detection or 2: moderate confidence (only for table 12)meta.code.qualintnullableFieldField identification(s) (G1)meta.id;obs.fieldcharRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainJ/ApJ/697/1103/obsMIKE (fields A-D) and Hectochelle (fiels F) observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFieldField identification: A-D for MIKE (table 1) or F for Hectochelle (table 2)meta.id;obs.fieldcharDateDate of observationtime.epochnullableJDJulian date (-2454000)dtime.epochfloatRAJ2000Hour of right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000)pos.eq.dec;meta.mainAirMAir massobs.airMassfloatExpT1Exposure time 1stime.duration;obs.exposureintExpT2Exposure time 2stime.duration;obs.exposureintBinn1Binning for exposure 1instr.setupintBinn2Binning for exposure 2instr.setupintFiltFilter (Mg for table 1 or RV31 for table 2)meta.id;instr.filtercharZPSZero-point shift (1)km/sinstr.paramfloatf_ZPS[b] Shift applied (2)meta.codechare_ZPSZPS uncertaintykm/sstat.errorfloatZPS2? Zero-point shift 2km/sinstr.paramfloatnullablef_ZPS2[c] Shift applied (2)meta.codechare_ZPS2? ZPS2 uncertaintykm/sstat.errorfloatnullableNtarNumber of targetsmeta.numberintJ/ApJ/697/1103/vHectoHectochelle velocity datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFHectoechelle field number (1=table4, 2=table5, 3=table6)obs.fieldchar2MASS2MASS identification (HHMMSSs+DDMMSS)meta.id;meta.maincharFE1-RVHectochelle Field (1 for table 4, 2 for table 5 or 3 for table 6), Epoch 1 radial velocitykm/sphys.veloc;pos.heliocentricfloate_FE1-RVUncertainty in FE1-RVkm/sstat.errorfloatFE2-RV? Hectochelle Field, Epoch 2 radial velocity (not for table 6)km/sphys.veloc;pos.heliocentricfloatnullablee_FE2-RV? Uncertainty in FE2-RVkm/sstat.errorfloatnullableFE1-RHectochelle Field, Epoch 1 Cross-correlation signal to noisestat.snrfloatFE2-R? Hectochelle Field, Epoch 2 Cross-correlation signal to noise (not for table 6)stat.snrfloatnullableJ/ApJ/697/1103/vMikeMIKE velocity datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFMIKE Field: A=table7, B=table8, C=table9, D=table10obs.fieldchar2MASS2MASS identification (HHMMSSs+DDMMSS)meta.id;meta.maincharE1-RVMIKE Fiber field (A for table 7, B for table 8, C for table 9 or D for table 10), Epoch 1 radial velocitykm/sphys.veloc;pos.heliocentricfloate_E1-RVUncertainty in 1-RVkm/sstat.errorfloatE2-RV? MIKE Fiber C field, Epoch 2 radial velocity (not for table 10)km/sphys.veloc;pos.heliocentricfloatnullablee_E2-RV? Uncertainty in 2-RVkm/sstat.errorfloatnullableE3-RV? MIKE Fiber field, Epoch 3 radial velocity (only for table 9)km/sphys.veloc;pos.heliocentricfloatnullablee_E3-RV? Uncertainty in 3-RVkm/sstat.errorfloatnullableE1-RMIKE Fiber field, Epoch 1 Cross-correlation signal to noisestat.snrfloatE2-R? MIKE Fiber field, Epoch 2, Cross-correlation signal to noise (not for table 10)stat.snrfloatnullableE3-R? MIKE Fiber field, Epoch 3, Cross-correlation signal to noise (only for table 9)stat.snrfloatnullable