J/MNRAS/422/2765ivo://CDS.VizieR/J/MNRAS/422/2765doi:10.26093/cds/vizier.74222765CDSDe Rosa R.J.Patience J.Vigan A.Wilson P.A.Schneider A.,McConnell N.J.Wiktorowicz S.Marois C.Song I.Macintosh B.,Graham J.R.Bessell M.S.Doyon R.Lai O.2024-07-17T20:15:43Z2012-11-19T14:25:08ZCDS support team

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

cds-question@unistra.frorbitsa-starsAs a part of our ongoing Volume-limited A-Star (VAST) adaptive optics survey, we have obtained observations of 26 binary systems with projected separations <100AU, 13 of which have sufficient historical measurements to allow for refinement of their orbital elements. For each system with an estimated orbit, the dynamical system mass obtained was compared with the system mass estimated from mass-magnitude relations. Discrepancies between the dynamical and theoretical system mass can be explained by the presence of a previously unresolved spectroscopic component, or by a non-solar metallicity of the system. Using this approach to infer the presence of additional companions, a lower limit to the fraction of binaries, triples, and quadruples can be estimated as 39%, 46%, and 15%, for systems with at least one companion within 100AU. The fraction of multiple systems with three or more components shows a relative increase compared to the fraction for Solar-type primaries resolved in previous volume-limited surveys. The observations have also revealed a pair of potentially young (<100Myr) M-dwarf companions, which would make an ideal benchmark for the theoretical models during the pre-Main Sequence contraction phase for M-dwarfs. In addition to those systems with orbit fits, we report 13 systems for which further orbital monitoring observations, are required, 11 of which are newly resolved as a part of the VAST survey.2012MNRAS.422.2765Dhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/422/2765CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/422/2765https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/422/2765http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/422/2765https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/422/2765https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/422/2765http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/422/2765GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/422/2765/table1 (Basic properties of sample members)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/422/2765/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/422/2765/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/422/2765/table1?GETtext/xml+votable180.050000true16.9494014-41.48692670.0055555555555555566/475 3338 3678 3710 3819 6340 7205 8156 8690 10000 10486 12491 16240 16685-16686 19825 20047 23658 26406 30914 31284 35440 37700 39611 47031 480377.952274030004205e-20 4.067783865629509e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/422/2765?format=asciidefaultJ/MNRAS/422/2765/table1Basic properties of sample membersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintS[OM] Sample: Orbit or Monitoringmeta.idcharHIPHipparcos (Cat. I/311) numbermeta.id;meta.mainintprimaryNameOther name of the starmeta.idHRHarvard Revised (Cat. V/50) number of starmeta.idcharHDHenry Draper (Cat. III/135) number of starmeta.idintADS? Aitken Double Star numbermeta.idintnullableSpTMK Spectral typesrc.spTypecharDistHeliocentric distance of starpcpos.distancefloate_DistMean error on Distpcstat.errorfloatVTmagHipparcos/Tycho blue magnitudemagphot.mag;em.opt.Vfloate_VTmagMean error on VTmagmagstat.error;phot.mag;em.opt.VfloatKsmag2MASSS Ks-band magnitudemagphot.mag;em.IR.Kfloate_KsmagMean error on Ksmagmagstat.error;phot.mag;em.IR.Kfloatr_Ksmag[ab] Ks magnitude from other source (1)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.refchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainJ/MNRAS/422/2765/table6Derived parameters of individual componentsCompComponentsmeta.code.multipcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintn_HIP[+*] Note about this system (1)meta.notecharHIPHipparcos (Cat. I/311)meta.id;meta.mainintm_HIPMultiplicity componentmeta.code.multipcharVTmagTycho V_T_ magnitudemagphot.mag;em.opt.Vfloate_VTmagMean error on VTmagmagstat.error;phot.mag;em.opt.VfloatKmag2MASS Ks magnitudemagphot.mag;em.IR.Kfloate_KmagMean error on Kmagmagstat.error;phot.mag;em.IR.KfloatV-KV-K color indexmagphot.color;em.opt.V;em.IR.Kfloate_V-KMean error on V-Kmagstat.error;phot.color;em.opt.VfloatVMAGAbsolute V magnitudemagphys.magAbs;em.opt.Vfloate_VMAGMean error on VMAGmagstat.errorfloatKMAGAbsolute K magnitudemagphys.magAbs;em.IR.Kfloate_KMAGMean error on KMAGmagstat.errorfloatSBSpectroscopic binary feature (SB1 or SB2)meta.notecharRefReferencemeta.ref;pos.framecharJ/MNRAS/422/2765/table8Estimated orbital parametersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHipparcos numbermeta.id;meta.mainintNmNumber of measuresmeta.numberintPerPeriodyrtime.periodfloate_PerMean error of Per (upper)yrstat.errorfloatE_PerMean error of Per (lower)yrstat.error;stat.maxfloataSemi-major axisarcsecphys.angSize.smajAxis;src.orbitalfloate_aMean error on a (upper)arcsecstat.errorfloatE_aMean error on a (lower)arcsecstat.error;stat.maxfloatiInclination of the orbitdegsrc.orbital.inclinationfloate_iMean error on i (upper)degstat.errorfloatE_iMean error on i (lower)degstat.error;stat.maxfloatOmeLongitude of node {Omega}degsrc.orbital.nodefloate_OmeMean error on Ome (upper)degstat.errorfloatE_OmeMean error on Ome (lower)degstat.error;stat.maxfloatT0Epoch of periastronyrsrc.orbital.periastrondoublee_T0Mean error on T0 (upper)yrstat.errorfloatE_T0Mean error on T0 (lower)yrstat.error;stat.maxfloateOrbit eccentricitysrc.orbital.eccentricityfloate_eMean error on e (upper)stat.errorfloatE_eMean error on e (lower)stat.error;stat.maxfloatomeLongitude of periastron {omega}degsrc.orbital.periastronfloate_omeMean error on ome (upper)degstat.errorfloatE_omeMean error on ome (lower)degstat.error;stat.maxfloatMassSystem masssolMassphys.massfloate_MassMean error on MasssolMassstat.error;phys.massfloatJ/MNRAS/422/2765/measuresList of binary separation and position angle measurementsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHIPHipparcos numbermeta.id;meta.mainintJDObservation epoch (Julian date)dtime.epochdoubleDateObservation epoch (Decimal year)dtime.epoch;obsfloatrhoMeasured binary separation {rho}arcsecpos.angDistance;src.orbitalfloate_rhoUncertainty on rhoarcsecstat.errorfloatthetaMeasured binary position angle {theta}degpos.posAngfloate_thetaUncertainty on thetadegstat.error;pos.posAngfloatRefBibcode of bibliographic source of measurement (blank when no bibliographic code is known)meta.bibchar