J/AJ/150/154ivo://CDS.VizieR/J/AJ/150/154doi:10.26093/cds/vizier.51500154CDSTorres G.Lacy C.H.S.Pavlovski K.Fekel F.C.Muterspaugh M.W.2017-07-12T06:59:48Z2016-06-28T08:10:04ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsradial-velocityphotometryWe report extensive high-resolution spectroscopic observations and V-band differential photometry of the slightly eccentric 7.02day detached eclipsing binary V501 Mon (A6m+F0), which we use to determine its absolute dimensions to high precision (0.3% for the masses and 1.8% for the radii, or better). The absolute masses, radii, and temperatures are M_A_=1.6455+/-0.0043M_{sun}_, R_A_=1.888+/-0.029R_{sun}_, and T_eff_^A^=7510+/-100K for the primary and M_B_=1.4588+/-0.0025M_{sun}_, R_B_=1.592+/-0.028R_{sun}_, and T_eff_^B^=7000+/-90K for the secondary. Apsidal motion has been detected, to which General Relativity contributes approximately 70%. The primary star is found to be a metallic-line A star. A detailed chemical analysis of the disentangled spectra yields abundances for more than a dozen elements in each star. Based on the secondary, the system metallicity is near solar: [Fe/H]=+0.01+/-0.06. Lithium is detected in the secondary but not in the primary. A comparison with current stellar evolution models shows a good match to the measured properties at an age of about 1.1Gyr.2015AJ....150..154Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/150/154CatalogResearchIsServedByTAP VizieR generic servicerelated-toB/vsx : AAVSO International Variable Star Index VSX (Watson+, 2006-2014)B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/259 : The Tycho-2 Catalogue (Hog+ 2000)J/AN/334/860 : Catalogue of eclipsing variables. Version 2 (Avvakumova+, 2013)J/AJ/142/185 : Properties of the eclipsing binary stars HY Vir (Lacy+, 2011)J/AcA/54/207 : Ephemerids of eclipsing binaries (Kreiner, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/150/154https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/150/154http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/150/154https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/150/154https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/150/154http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/150/154GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/150/154/velocitiesHeliocentric radial velocities of V501 Mon from CfA , and from Fairborn ObservatoryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleRVA[-90.7/64.5] Primary heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_RVA[0.16/1.19] Uncertainty in RVAkm/sstat.errorfloatO-CA[-1.24/1.76] Primary (O-C) residualkm/sstat.fit.residualfloatRVB[-87.1/90.2] Secondary heliocentric radial velocitykm/sspect.dopplerVeloc;pos.heliocentricfloate_RVB[0.42/3.1] Uncertainty in RVBkm/sstat.errorfloatO-CB[-2.16/3.61] Secondary (O-C) residualkm/sstat.fit.residualfloatPhase[0/1] Orbital phasetime.phasefloatInstInstrument used (DS or TRES; only for Table2) (1)instr.setupcharJ/AJ/150/154/table5Differential V-band measurements of V501 MonrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleDVmag[2.2/3.1] Differential V band magnitude (variable minus comparisons)magphot.mag;em.opt.V;arith.difffloatJ/AJ/150/154/table7Abundances from our disentangled TRES spectra of V501 MonrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintZ[11/56] Atomic numbermeta.id;meta.mainintElElement and ionization degreephys.atmol.element;phys.atmol.ionizationcharAbd1[2.52/7.83]? Logarithm of the number abundance for the primary (1)phys.abundfloatnullablee_Abd1[0.05/0.11]? Error in Abd1stat.errorfloatnullable[X/H]1[-0.63/1.76]? Logarithmic abundance relative to the Sun for the primarylog(Sun)phys.abundfloatnullablee_[X/H]1[0.07/0.14]? Error in [X/H]1log(Sun)stat.error;phys.abundfloatnullableN1[3/159]? Number of spectral lines measured for the primarymeta.numberintnullableAbd2[2.17/7.52]? Logarithm of the number abundance for the secondary (1)phys.abundfloatnullablee_Abd2[0.04/0.14]? Error in Abd2stat.errorfloatnullable[X/H]2[-0.08/0.06]? Logarithmic abundance relative to the Sun for the secondarylog(Sun)phys.abundfloatnullablee_[X/H]2[0.06/0.15]? Error in [X/H]2log(Sun)stat.error;phys.abundfloatnullableN2[4/126]? Number of spectral lines measured for the secondarymeta.numberintnullableloge[2.18/7.6] Reference photospheric solar value (log {epsilon}_{Sun}_) (2)phys.abundfloate_loge[0.03/0.09] Error in logEstat.errorfloatJ/AJ/150/154/table1Times of eclipse for V501 MonrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[30077.2/56676.7] Heliocentric Julian Date (HJD-2400000)dtime.epochdoublee_HJD[0.0002/0.0025]? Error in HJD (listed as published) (1)dstat.error;time.epochdoublenullableE[1/2] Eclipse (1=primary, 2=secondary)meta.codeintTypeType of observation (pg=photographic measurement or CCD=more modern determination)meta.code;obscharO-C[-0.05/0.06] The (O-C) residual (2)dstat.fit.residual;stat.fit.omcdoubleRef[1/9] Source of observation (3)meta.bibint