J/ApJ/832/121ivo://CDS.VizieR/J/ApJ/832/121doi:10.26093/cds/vizier.18320121CDSGaulme P.McKeever J.Jackiewicz J.Rawls M.L.Corsaro E.Mosser B.,Southworth J.Mahadevan S.Bender C.Deshpande R.2017-07-05T06:59:20Z2017-03-30T13:03:23ZCDS support team

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

cds-question@unistra.frgiant-starseclipsing-binary-starsradial-velocitysurveysmetallicityGiven the potential of ensemble asteroseismology for understanding fundamental properties of large numbers of stars, it is critical to determine the accuracy of the scaling relations on which these measurements are based. From several powerful validation techniques, all indications so far show that stellar radius estimates from the asteroseismic scaling relations are accurate to within a few percent. Eclipsing binary systems hosting at least one star with detectable solar-like oscillations constitute the ideal test objects for validating asteroseismic radius and mass inferences. By combining radial velocity (RV) measurements and photometric time series of eclipses, it is possible to determine the masses and radii of each component of a double-lined spectroscopic binary. We report the results of a four-year RV survey performed with the echelle spectrometer of the Astrophysical Research Consortium's 3.5m telescope and the APOGEE spectrometer at Apache Point Observatory. We compare the masses and radii of 10 red giants (RGs) obtained by combining radial velocities and eclipse photometry with the estimates from the asteroseismic scaling relations. We find that the asteroseismic scaling relations overestimate RG radii by about 5% on average and masses by about 15% for stars at various stages of RG evolution. Systematic overestimation of mass leads to underestimation of stellar age, which can have important implications for ensemble asteroseismology used for Galactic studies. As part of a second objective, where asteroseismology is used for understanding binary systems, we confirm that oscillations of RGs in close binaries can be suppressed enough to be undetectable, a hypothesis that was proposed in a previous work.2016ApJ...832..121Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/832/121CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/133 : Kepler Input Catalog (Kepler Mission Team, 2009)J/ApJS/215/19 : APOKASC catalog of Kepler red giants (Pinsonneault+, 2014)J/ApJS/211/2 : Revised properties of Q1-16 Kepler targets (Huber+, 2014)J/A+A/557/A119 : Eclipsing binary system LL Aquarii (Southworth, 2013)J/A+A/555/A150 : Physical parameters of cool solar-type stars (Tsantaki+, 2013)J/A+A/546/A14 : Limb-darkening for CoRoT, Kepler, Spitzer (Claret+, 2012)J/ApJS/199/30 : Effective temperatures for KIC stars (Pinsonneault+, 2012)J/AJ/142/112 : KIC photometric calibration (Brown+, 2011)J/A+A/510/A21 : Stellar Limb-Darkening Coefficients (Sing, 2010)J/A+A/469/783 : Code for automatic determination of EW (ARES) (Sousa+, 2007)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/832/121https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/832/121http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/832/121https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/832/121https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/832/121http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/832/121GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJ/832/121/sample (Atmospheric parameters of the red giants from the ARC 3.5m visible spectra and asteroseismic frequencies)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/832/121/sample?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/832/121/sample?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/832/121/sample?GETtext/xml+votable180.050000true291.9300839.072078890.005555555555555556Cone search capability for table J/ApJ/832/121/table2 (*Orbital parameters from dynamical modeling with JKTEBOP)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJ/832/121/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJ/832/121/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJ/832/121/table2?GETtext/xml+votable180.050000true299.2435943.814361940.0055555555555555566/14583 14585 14744 14759 14763 14772 14777 14781 14795 14818 14931 14959 14968 15107 15139https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJ/832/121?format=asciiOpticaldefaultJ/ApJ/832/121/sampleAtmospheric parameters of the red giants from the ARC 3.5m visible spectra and asteroseismic frequenciesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKIC[3955867/10001167] KIC numbermeta.id;meta.mainintNpDisplay the orbital parameters for this KIC if anymeta.ref.urlintnullableKpmag[9.2/14] Kepler magnitudemagphot.mag;em.optfloatTeff[4516/5058]? Effective temperature from ARCESKphys.temperature.effectiveintnullablee_Teff[36/152]? Teff uncertaintyKstat.error;phys.temperature.effectiveintnullablelogg[2.2/3.7]? Surface gravity from ARCESlog(cm.s**-2)phys.gravityfloatnullablee_logg[0.09/0.4]? logg uncertaintylog(cm.s**-2)stat.errorfloatnullable[Fe/H][-0.7/0.3]? Metallicity from ARCESlog(Sun)phys.abund.Zfloatnullablee_[Fe/H][0.01/0.1]? [Fe/H] uncertaintylog(Sun)stat.error;phys.abund.FefloatnullableTeff2[4539/5044]? Effective temperature from APOGEEKphys.temperature.effectiveintnullablee_Teff2[91]? Teff2 uncertaintyKstat.errorintnullablelogg2[2.3/3.3]? Surface gravity from APOGEElog(cm.s**-2)phys.gravityfloatnullablee_logg2[0.1]? logg2 uncertaintylog(cm.s**-2)stat.errorfloatnullable[Fe/H]2[-0.7/0.5]? Metallicity from APOGEElog(Sun)phys.abund.Zfloatnullablee_[Fe/H]2[0.02/0.08]? [Fe/H]2 uncertaintylog(Sun)stat.error;phys.abund.Fefloatnullablenumax[19.9/322] Asteroseismic frequency at maximum amplitudeuHzem.freq;src.varfloatnullablee_numax[0.09/2.1] numax uncertaintyuHzstat.errorfloatnullabledelnu[2.7/22.3] Observed mean large spacing {Delta}{nu}_obs_uHzem.freq;src.varfloatnullablee_delnu[0.01/0.06] delnu uncertaintyuHzstat.errorfloatnullableSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Kepler Input Catalog (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPositions from Kepler Input Catalog (V/133) (declination part)degpos.eq.dec;meta.mainJ/ApJ/832/121/table2*Orbital parameters from dynamical modeling with JKTEBOPe[0.001/0.5] Eccentricitysrc.orbital.eccentricityfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNpDisplay the atmospheric parameters for this KIC if anymeta.ref.urlintnullableKIC[3955867/10001167] KIC numbermeta.id;meta.mainintprimaryNvNumber of radial velocity measurements for this KICmeta.numberintnullablePer[14.6/1058.2] Orbital perioddtime.perioddoublee_Per[0/0.02] Per uncertaintydstat.errordoubleTpTime of periastron in Kepler Julian Date (BJD-2454833 days)dtime.epochdoublee_Tp[0.0003/0.02] Tp uncertaintydstat.errorfloatomega[4.1/356] Argument of periastron {omega}degsrc.orbital.periastronfloate_omega[0.02/5] omega uncertaintydegstat.errorfloate_e[0.0002/0.01] e uncertaintystat.errorfloati[81.5/90] Orbital plane inclinationdegsrc.orbital.inclinationfloate_i[0.006/0.6]? i uncertaintydegstat.errorfloatnullablef_iFlag on i (1)meta.codecharR2/R1[5.3/23.3] R2/R1 value (2)%phys.size;arith.ratiofloate_R2/R1[0.02/0.3] R2/R1 uncertainty%stat.errorfloatRatio[1.924/24.4] (R1+R2)/a value (2)%phys.size;arith.ratiofloate_Ratio[0.007/0.3] Ratio uncertainty%stat.error;arith.ratiofloatT2/T1[0.07/4] (T2/T1)^4^ (2)phys.temperaturefloate_T2/T1[0.002/0.4] T2/T1 uncertaintystat.errorfloatL2/L1[0.02/15.1] L2/L1 value (2)%phys.luminosity;arith.ratiofloate_L2/L1[0.0006/0.1] L2/L1 uncertainty%stat.error;phys.abundfloatK1[12.3/50.2] Radial velocity semiamplitude of the red giantkm/sspect.dopplerVeloc;em.opt.Rfloate_K1[0.1/0.8] K1 uncertaintykm/sstat.errorfloatK2[23/58]? Radial velocity semiamplitude of the companionkm/sspect.dopplerVelocfloatnullablee_K2[0.3/3]? K2 uncertaintykm/sstat.errorfloatnullablegamma[-185/25] Radial velocity offsetkm/sphys.veloc;arith.diffdoublee_gamma[0.009/0.4] gamma uncertaintykm/sstat.errorfloatVPVelocity Plotmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlchar_RAPositions from Kepler Input Catalog (V/133) (right ascension part)degpos.eq.ra;meta.main_DEPositions from Kepler Input Catalog (V/133) (declination part)degpos.eq.dec;meta.mainJ/ApJ/832/121/table5Radial velocitiesKJDKepler Julian Date; BJD-2454833 (1)dtime.epochdoubleRVel1[-228.5/58.7] Primary radial velocitykm/sphys.veloc;pos.heliocentricfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintKIC[3955867/10001167] Object identifiermeta.id;meta.maininte_RVel1[0.02/0.2] Uncertainty in RVel1km/sstat.errorfloatRVel2[-242/70]? Secondary radial velocitykm/sphys.veloc;pos.heliocentricfloatnullablee_RVel2[0/7]? Uncertainty in RVel2km/sstat.errorfloatnullable