J/AJ/152/141ivo://CDS.VizieR/J/AJ/152/141doi:10.26093/cds/vizier.51520141CDSBenedict G.F.Henry T.J.Franz O.G.McArthur B.E.Wasserman L.H.,Jao W.-C.Cargile P.A.Dieterich S.B.Bradley A.J.Nelan E.P.,Whipple A.L.2024-10-11T20:09:42Z2017-05-30T05:57:56ZCDS support team

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

cds-question@unistra.frm-starsdwarf-starsradial-velocityWe present a mass-luminosity relation (MLR) for red dwarfs spanning a range of masses from 0.62M_{Sun}_ to the end of the stellar main sequence at 0.08M_{Sun}_. The relation is based on 47 stars for which dynamical masses have been determined, primarily using astrometric data from Fine Guidance Sensors (FGS) 3 and 1r, white-light interferometers on the Hubble Space Telescope (HST), and radial velocity data from McDonald Observatory. For our HST/FGS sample of 15 binaries, component mass errors range from 0.4% to 4.0% with a median error of 1.8%. With these and masses from other sources, we construct a V-band MLR for the lower main sequence with 47 stars and a K-band MLR with 45 stars with fit residuals half of those of the V band. We use GJ 831 AB as an example, obtaining an absolute trigonometric parallax, {pi}_abs_=125.3+/-0.3mas, with orbital elements yielding M_A_=0.270+/-0.004M_{Sun}_ and M_B_=0.145+/-0.002M_{Sun}_. The mass precision rivals that derived for eclipsing binaries. A remaining major task is the interpretation of the intrinsic cosmic scatter in the observed MLR for low-mass stars in terms of physical effects. In the meantime, useful mass values can be estimated from the MLR for the ubiquitous red dwarfs that account for 75% of all stars, with applications ranging from the characterization of exoplanet host stars to the contribution of red dwarfs to the mass of the universe.2016AJ....152..141Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/152/141CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/279 : Revised Luyten Half-Second Catalogue (Bakos+ 2002)I/239 : The Hipparcos and Tycho Catalogues (ESA 1997)J/AJ/144/64 : Solar neighborhood. XXVIII. (Dieterich+, 2012)J/AJ/143/10 : WIYN speckle observations of binaries. VII. (Horch+, 2012)J/A+AS/105/503 : Binary star speckle measurements (Balega+ 1994)J/AJ/106/773 : Mass-luminosity relation (Henry+, 1993)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/152/141https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/152/141http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/152/141https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/152/141https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/152/141http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/152/141GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/152/141/table1 (Identifications and coordinates)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/152/141/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/152/141/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/152/141/table1?GETtext/xml+votable180.050000true3.86664167-16.133841670.0055555555555555566/1477 3751 6974 7132 10027 12454 14772 16827 22148 27730-27731 30327 33425 36526 48985https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/152/141?format=asciiOpticaldefaultJ/AJ/152/141/table1Identifications and coordinatesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifiermeta.id;meta.maincharGiclasGiclas identifiermeta.idcharHIP? Hipparcos identifiermeta.idintnullableLHS? Luyten Half Second (LHS) identifiermeta.idintnullableONameOther namemeta.idcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainPerOrbital perioddtime.periodfloate_PerUncertainty in Perdstat.errorfloatNrvNumber of radial velocity measurements (table3)meta.numberintnullableNresNumber of residuals to the orbit fits (table8)meta.numberintnullableVPVelocity Plotmeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharJ/AJ/152/141/table3Radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier (GJ22 AC, GJ234 AB, GJ469 AB, GJ623 AB, GJ748 AB, GJ791.2 AB, or GJ831 AB)meta.id;meta.maincharf_Name[cH] Flag on Name (1)meta.codecharJD[46627.5/54875.3] Modified Julian Date of observation (JD-2400000.0)dtime.epochdoubleRV1[-65/18.2] Primary radial velocitykm/sspect.dopplerVelocfloate_RV1[0.008/6.24] 1{sigma} uncertainty in RV1km/sstat.errorfloatRV2[-72.74/-0.4]? Secondary radial velocitykm/sspect.dopplerVelocfloatnullablee_RV2[0.07/6.32]? 1{sigma} uncertainty in RV2km/sstat.errorfloatnullableJ/AJ/152/141/table8Component position angles, separations, residuals, and sourcesSep[0.6/2530] Separation {rho}maspos.angDistancefloatSet[1/64] Set numbermeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentifier (G193-027 AB, G250-029 AB, GJ1005 AB, GJ1081 AB, GJ1245 AC, GJ22 AC, GJ234 AB, GJ469 AB, GJ473 AB, GJ54 AB, GJ623 AB, GJ65 AB, GJ748 AB, GJ791.2 AB, or GJ831 AB)meta.id;meta.maincharJD[32832/55828] Modified Julian Date of observationdtime.epochdoubleDSep[-218.3/333] Residual in Sep ({Delta}{rho})masstat.fit.residualfloatPA[1.5/358] Position angle {theta}degpos.posAngfloatDPA[-13/9] Residual in PA ({Delta}{theta})degstat.fit.residualfloaterr[-141/227.1] The {rho}{Delta}{theta} valuemasstat.error;src.orbitalfloatSceMeasurement source (FGS1r=FGS unit 1r, FGS3=FGS unit 3, or non-FGS) (1)meta.bibchar