J/AJ/156/45ivo://CDS.VizieR/J/AJ/156/45doi:10.26093/cds/vizier.51560045CDSSkinner J.Covey K.R.Bender C.F.Rivera N.De Lee N.Souto D.,Chojnowski D.Troup N.Badenes C.Bizyaev D.Blake C.H.Burgasser A.,Canas C.Carlberg J.Maqueo Chew Y.G.Deshpande R.Fleming S.W.,Fernandez-Trincado J.G.Garcia-Hernandez D.A.Hearty F.Kounkel M.,Longa-Pene P.Mahadevan S.Majewski S.R.Minniti D.Nidever D.,Oravetz A.Pan K.Stassun K.Terrien R.Zamora O.2019-02-01T12:37:11Z2019-01-31T15:24:16ZCDS support team

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

cds-question@unistra.frmultiple-starsdwarf-starsm-starsstellar-massesradial-velocityBinary stars make up a significant portion of all stellar systems. Consequently, an understanding of the bulk properties of binary stars is necessary for a full picture of star formation. Binary surveys indicate that both multiplicity fraction and typical orbital separation increase as functions of primary mass. Correlations with higher-order architectural parameters such as mass ratio are less well constrained. We seek to identify and characterize double-lined spectroscopic binaries (SB2s) among the 1350 M-dwarf ancillary science targets with APOGEE spectra in the SDSS-III Data Release 13. We measure the degree of asymmetry in the APOGEE pipeline cross-correlation functions (CCFs) and use those metrics to identify a sample of 44 high-likelihood candidate SB2s. At least 11 of these SB2s are known, having been previously identified by Deshpande et al. (2013, J/AJ/146/156) and/or El-Badry et al. (2018MNRAS.476..528E). We are able to extract radial velocities (RVs) for the components of 36 of these systems from their CCFs. With these RVs, we measure mass ratios for 29 SB2s and five SB3s. We use Bayesian techniques to fit maximum-likelihood (but still preliminary) orbits for four SB2s with eight or more distinct APOGEE observations. The observed (but incomplete) mass-ratio distribution of this sample rises quickly toward unity. Two-sided Kolmogorov-Smirnov tests find probabilities of 18.3% and 18.7%, demonstrating that the mass-ratio distribution of our sample is consistent with those measured by Pourbaix et al. (2004, Cat. B/sb9) and Fernandez et al. (2017PASP..129h4201F), respectively.2018AJ....156...45Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/156/45CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/sb9 : SB9: 9th Catalogue of Spectroscopic Binary OrbitsJ/AJ/146/156 : APOGEE M-dwarf survey. I. First year velocitiesJ/ApJ/804/64 : Empirical and model parameters of 183 M dwarfs (Mann+, 2015)J/MNRAS/449/2618 : M-dwarfs in Multiples (MinMs) survey. I. (Ward-Duong+, 2015)J/AJ/155/38 : The rotation of M dwarfs observed by APOGEE (Gilhool+, 2018)http://www.sdss3.org/ : The SDSS-III websitehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/156/45https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/156/45http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/156/45https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/156/45https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/156/45http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/156/45GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapdefaultJ/AJ/156/45/table1Selected binariesSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharprimaryf_2MASSFlag on 2MASS (1)meta.codecharmoreindicates radial velocity and mass data in Tables 3-5 for this binarymeta.ref.urlcharMass[0.109/0.926] Photometricly derived mass (2)solMassphys.massfloatf_Mass[*] Flag on Mass (3)meta.codecharNvis[3/15] Number of visitsmeta.numberintR151[2.46/10.64] R value for central 151 lags (4)stat.fit.paramfloatR101[2.06/9.14] R value for central 101 lags (4)stat.fit.paramfloatR51[2.12/6.7] R value for central 51 lags (4)stat.fit.paramfloatCCF[0.32/0.89] Maximum cross-correlation functionstat.fit.paramfloatXRange[5.27/186.37] Bisector width (5)stat.fit.paramfloatSep[0/12] Well separated epochsmeta.numberintJ/AJ/156/45/RVRadial velocity measurements of SB2s (table 3) and SB3s (table 4)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSBBinary typemeta.code.classchar2MASS2MASS identifier (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharNvis[1/20] Number of visitsmeta.numberintf_NvisFlag on Nvis (only in Table 3) (1)meta.codecharMJD[55811.11/56836.4321] Epochdtime.epochdoublePMFSDSS Plate-MJD-Fibermeta.idcharS/N[6/549] Signal-to-noise ratiostat.snrintRV1[-183.3/109.2]? Primary radial velocity (2)km/sspect.dopplerVelocfloatnullablee_RV1[0.12/0.56]? Uncertainty in RV1 (2)km/sstat.errorfloatnullableRV2[-186.3/116.2]? Secondary radial velocity (2)km/sspect.dopplerVelocfloatnullablee_RV2[0.12/2.5]? Uncertainty in RV2 (2)km/sstat.errorfloatnullableRV3[-57.52/20.1]? Tertiary radial velocity (only in Table 4) (2)km/sspect.dopplerVelocfloatnullablee_RV3[0.24/1.02]? Uncertainty in RV3 (only in Table 4) (2)km/sstat.errorfloatnullableJ/AJ/156/45/table5Mass ratio and {Delta}RV of analyzed starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordint2MASS2MASS identifier (2MHHMMSSss+DDMMSSs)meta.id;meta.maincharf_2MASSFlag on 2MASS (1)meta.codecharq[0.217/0.998] Mass ratio; M_sec_/M_pri_phys.massfloate_q[0.001/0.389]? Uncertainty in qstat.errorfloatnullableRatio[0.002/0.688]? Ratio of e_q to qphys.mass;arith.ratiofloatnullableMaxDelRV[29.56/161.26] Maximum primary-secondary velocity separation Max{Delta}RVkm/sphys.veloc;arith.difffloat