J/A+A/672/A119ivo://CDS.VizieR/J/A+A/672/A119doi:10.26093/cds/vizier.36720119CDSGallenne A.Merand A.Kervella P.Graczyk D.Pietrzynski G.Gieren W.,Pilecki B.2025-06-24T20:01:03Z2023-10-03T14:36:57ZCDS support team

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

cds-question@unistra.frspectroscopic-binary-starsorbitsstellar-massesparallaxspectroscopyvisible-astronomyWe aim to measure very precise and accurate model-independent masses and distances of detached binary stars. Precise masses at the <1% level are necessary to test and calibrate stellar interior and evolution models, while precise and independent orbital parallaxes are essential to check for the next Gaia data releases. We combined RV measurements with interferometric observations to determine orbital and physical parameters of ten double-lined spectroscopic systems. We report new relative astrometry from VLTI/GRAVITY and, for some systems, new VLT/UVES spectra to determine the radial velocities of each component. We measured the distance of ten binary systems and the mass of their components with a precision as high as 0.03% (average level 0.2%). They are combined with other stellar parameters (effective temperatures, radii, flux ratios, etc.) to fit stellar isochrones and determine their evolution stage and age. We also compared our orbital parallaxes with Gaia and showed that half of the stars are beyond 1{sigma} with our orbital parallaxes; although, their RUWE is below the frequently used cutoff of 1.4 for reliable Gaia astrometry. By fitting the telluric features in the GRAVITY spectra, we also estimated the accuracy of the wavelength calibration to be ~0.02% in high and medium spectral resolution modes. We demonstrate that combining spectroscopic and interferometric observations of binary stars provides extremely precise and accurate dynamical masses and orbital parallaxes. As they are detached binaries, they can be used as benchmark stars to calibrate stellar evolution models and test the Gaia parallaxes.2023A&A...672A.119Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/672/A119CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/672/A119https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/672/A119http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/672/A119https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/672/A119https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/672/A119http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/672/A119GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/672/A119/table6 (Best-fit orbital elements and parameters for our binary systems)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/672/A119/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/672/A119/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/672/A119/table6?GETtext/xml+votable180.050000true52.3453136-24.10086080.0055555555555555566/17201 18422 18666 18673 21261 21785 27890 36139 43075 48768https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/672/A119?format=asciiOpticaldefaultJ/A+A/672/A119/table1Stellar atmospheric parameters of the hottest component used for the spectral templates to estimate the radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintVCShow the Radial Velocity curvesmeta.ref.urlcharSystemSystem namemeta.id;meta.maincharTeffEffective temperatureKphys.temperature.effectiveintloggSurface gravitylog(cm.s**-1)phys.gravityfloat[Fe/H]Metallicityphys.abund.ZfloatRefReferencemeta.ref;pos.framecharJ/A+A/672/A119/table6Best-fit orbital elements and parameters for our binary systemsSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSystemSystem namemeta.id;meta.maincharProbOrbital perioddtime.perioddoublee_ProbOrbital period errordstat.errordoubleTpTime passage through periastrondsrc.orbital.periastrondoublee_TpTime passage through periastron errordstat.errorfloateEccentricitysrc.orbital.eccentricitydoublee_eEccentricity errorstat.errordoubleK1Radial velocity semi-amplitude of the primarykm/sspect.dopplerVelocfloate_K1Radial velocity semi-amplitude of the primary errorkm/sstat.errorfloatK2Radial velocity semi-amplitude of the secondarykm/sspect.dopplerVelocfloate_K2Radial velocity semi-amplitude of the secondary errorkm/sstat.errorfloatgamma1Systemic velocity of the primarykm/sphys.velocfloate_gamma1Systemic velocity of the primary errorkm/sstat.errorfloatgamma2? Systemic velocity of the secondarykm/sphys.velocfloatnullablee_gamma2? Systemic velocity of the secondary errorkm/sstat.errorfloatnullableomegaArgument of periastrondegsrc.orbital.periastronfloate_omegaArgument of periastron errordegstat.errorfloatOmegaPosition angle of the ascending nodedegsrc.orbital.nodefloate_OmegaPosition angle of the ascending node errordegstat.errorfloataAngular semi-major axismasphys.angSizefloate_aAngular semi-major axis errormasstat.errorfloatalLinear semi-major axisAUphys.size.smajAxisfloate_alLinear semi-major axis errorAUstat.errorfloatinclOrbital inclinationdegsrc.orbital.inclinationfloate_inclOrbital inclination errordegstat.errorfloatM1Mass of the primarysolMassphys.massdoublee_M1Mass of the primary errorsolMassstat.errordoubleM2Mass of the secondarysolMassphys.massdoublee_M2Mass of the secondary errorsolMassstat.errordoubleDistDistancepcpos.distancedoublee_DistDistance errorpcstat.errorfloatplxParallaxmaspos.parallax.spectfloate_plxParallax errormasstat.error;pos.parallaxfloat_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/A+A/672/A119/table7Stellar parameters used for the age determinations, together with our fitted and adopted age for the systemse_RadRadius error (1)solRadstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRadRadius (1)solRadphys.size.radiusfloatTeffEffective temperatureKphys.temperature.effectiveinte_TeffEffective temperature errorKstat.error;phys.temperature.effectiveintlogLLuminositylog(solLum)phys.luminosityfloate_logLLuminosity errorlog(solLum)stat.errorfloat[Fe/H]? Metallicityphys.abund.Zfloatnullablee_[Fe/H]? Metallicity errorstat.error;phys.abund.FefloatnullableKMAGAbsolute K magnitudemagphys.magAbsfloate_KMAGAbsolute K magnitude errormagstat.errorfloatE(B-V)? Reddenningmagphot.color.excessfloatnullablee_E(B-V)? Reddenning errormagstat.errorfloatnullableRefReference(s) (2)meta.ref;pos.framechartparsec? Age estimated with PARSECGyrtime.agefloatnullablee_tparsec? Age estimated with PARSEC errorGyrstat.errorfloatnullabletbasti? Age estimated with BaTSIGyrtime.agefloatnullablee_tbasti? Age estimated with BaTSI errorGyrstat.errorfloatnullabletmist? Age estimated with MISTGyrtime.agefloatnullablee_tmist? Age estimated with MIST errorGyrstat.errorfloatnullabletdsep? Age estimated with DSEPGyrtime.agedoublenullablee_tdsep? Age estimated with DSEP errorGyrstat.errorfloatnullabletavg? Average age from the best fitted models (see text)Gyrtime.age;stat.meanfloatnullablee_tavg? Average age errorGyrstat.errorfloatnullableSystemSystem namemeta.id;meta.maincharStar[A/B] Star multiplicity indexmeta.code.multipcharJ/A+A/672/A119/tableb1Relative astrometric position of the secondary component for all systemsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSystemSystem namemeta.id;meta.maincharObs.dateObservation date'Y:M:D'time.epoch;obsnullableMJDModified Julian datedtime.epochdoubleBaselinesBaselinesmeta.id;instrcharSpResSpectral resolutionspect.resolutioncharCalCalibrator number (in table D1)instr.calibintDRASeparation in right ascensionmaspos.eq.ra;arith.difffloatDDESeparation in declinationmaspos.eq.dec;arith.difffloatsPA1{sigma} error position angledegstat.error;pos.posAngfloatsmaj1{sigma} error major axismagstat.error;phys.sizefloatsmin1{sigma} error minor axismasstat.error;phys.angSizefloatfFlux ratio%phot.flux;arith.ratiofloate_f? Flux ratio error (1)%stat.errorfloatnullableJ/A+A/672/A119/tablec1Measured radial velocities for all starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSystemSystem namemeta.id;meta.maincharMJDModified Julian datedtime.epochdoubleV1Velocity of A componentkm/sphys.velocfloate_V1Velocity of A component errorkm/sstat.errorfloatV2velocity of B componentkm/sphys.velocfloate_V2Velocity of B component errorkm/sstat.errorfloatInstInstrumentmeta.id;instrchar