J/MNRAS/496/2605ivo://CDS.VizieR/J/MNRAS/496/2605doi:10.26093/cds/vizier.74962605CDSBakis V.Eker Z.Sari O.Yucel G.Sonbas E.2024-08-21T20:15:18Z2023-09-28T14:53:02ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsorbitsphotometryspectroscopyvisible-astronomyTwin binaries were identified among the eclipsing binaries with {delta}>-30{deg} listed in the All Sky Automated Survey (ASAS) catalogue. In addition to the known twin binaries in the literature, 68 new systems have been identified and photometric and spectroscopic observations were done. Colour, spectral type, temperature, ratio of radii and masses of the components have been derived and are presented. Including 12 twin binary systems that exist in both ASAS and the catalogue of absolute parameters of detached eclipsing binary stars, a total of 80 twin detached binary systems have been statistically studied. A comparison of the spectral type distribution of the twins with those of detached eclipsing binary stars in the ASAS database shows that the spectral type distribution of twins is similar to that of detached systems. This result has been interpreted as indicating that there is no special formation mechanism for twins compared to normal detached binaries. As a result of our case study for HD 154010, a twin binary, we present the precise physical parameters of the system.2020MNRAS.496.2605Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/496/2605CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)J/MNRAS/479/5491 : Absolute parameters of 509 main-sequence starshttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/496/2605https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/496/2605http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/496/2605https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/496/2605https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/496/2605http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/496/2605GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/496/2605/table4 (Basic information and photometric data for ASAS twins)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/496/2605/table4?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/496/2605/table4?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/496/2605/table4?GETtext/xml+votable180.050000true21.0998975-27.89010420.0055555555555555566/215 405 475 565 4907 12932 13082 16617 17036 17758 19169 20598 20744 20753 21072 21313 21679 21761 21856 21932 22156 22216 22227 22266 23520 23632 23670 24300 24695 24897 25399 26383 27281 27370 28294 28958 29008 29081 29090 29128 29147 29271 29444 29852 30131 30274 30380 30569 30957 31046 31885 32112 32341 32483 35784 36246 36468 36744 39787 39883 39891 40197 40230 40596 44330 44352 48727 487433.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/496/2605?format=asciiOpticaldefaultJ/MNRAS/496/2605/table4Basic information and photometric data for ASAS twinsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/68] Internal source identifiermeta.idintASASASAS source identifier (HHMMSS+DDMM.m)meta.id;meta.maincharNameSource namemeta.idcharT0Ephemeris time (HJD-2400000)dtime.epochdoublePOrbital perioddtime.perioddoubleVmag? Observed V-band magnitudemagphot.mag;em.opt.VfloatnullableU-B? Observed U-B colormagphot.color;em.opt.U;em.opt.BfloatnullableB-V? Observed B-V colormagphot.color;em.opt.B;em.opt.VfloatnullableV-R? Observed V-R colormagphot.color;em.opt.V;em.opt.RfloatnullableV-I? Observed V-I colormagphot.color;em.opt.V;em.opt.IfloatnullableDist? Distance from Gaia DR2pcpos.distanceintnullable_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/496/2605/table5Results from the analysis of photometric and spectral dataID[1/68] Internal source identifiermeta.idintrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintASASASAS source identifier (HHMMSS+DDMM.m)meta.id;meta.maincharTeff1Primary effective temperatureKphys.temperature.effectiveintTeff2Secondary effective temperatureKphys.temperature.effectiveintlogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullabler1/r2Primary to secondary radius ratiophys.size;arith.ratiofloatM1/M2Primary to secondary mass ratiophys.massfloatf_M1/M2[*] Flag on M1/M2 (1)meta.codecharVrot? Rotational velocitykm/sphys.veloc.rotatintnullablePhase? Orbital phase at the time of spectroscopic observationtime.phasefloatnullableDV? Radial velocity difference of the components at the time of observationkm/sspect.dopplerVeloc;arith.diffintnullableSpTypeSpectral typesrc.spTypecharq_SpTypeSpectral type quality mark (2)meta.code.qual;src.spTypecharJ/MNRAS/496/2605/table6Twins in the list of absolute parameters of 509 main-sequence stars (Eker et al. 2018MNRAS.479.5491E, Cat. J/MNRAS/479/5491)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[1/12] Internal source identifiermeta.idintASASASAS source identifier (HHMMSS+DDMM.m)meta.id;meta.maincharTeff1Primary effective temperatureKphys.temperature.effectiveintTeff2Secondary effective temperatureKphys.temperature.effectiveintlogg1? Primary surface gravitylog(cm.s**-2)phys.gravityfloatnullablelogg2? Secondary surface gravitylog(cm.s**-2)phys.gravityfloatnullabler1/r2Primary to secondary radius ratiophys.size;arith.ratiofloatM1/M2Primary to secondary mass ratiophys.massfloatSpTypeSpectral typesrc.spTypecharJ/MNRAS/496/2605/table7The RVs of the components of HD 154010recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian date (HJD-2400000)dtime.epochdoublePhaseOrbital phasetime.phasefloatRV1? Radial velocity of the primarykm/sspect.dopplerVelocfloatnullableRV2Radial velocity of the secondarykm/sspect.dopplerVelocfloatJ/MNRAS/496/2605/table8Parameters of the spectroscopic orbit of HD 154010qM2/M1 mass ratiophys.massfloate_qError on qstat.errorfloateEccentricity (fixed to 0)src.orbital.eccentricityfloatVsysSystemic velocitykm/sphys.velocfloate_VsysError on Vsyskm/sstat.errorfloate_T0Error on T0dstat.errorfloatK1Velocity semi-amplitude of primarykm/sphys.velocfloate_K1Error on K1km/sstat.errorfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPOrbital perioddtime.perioddoubleT0Ephemeris time (HJD-2458353)dtime.epochfloatK2Velocity semi-amplitude of secondarykm/sphys.velocfloate_K2Error on K2km/sstat.errorfloatm1sini3Primary component masssolMassphys.massfloate_m1sini3Error on m1sini3solMassstat.errorfloatm2sini3Secondary component masssolMassphys.massfloate_m2sini3Error on m2sini3solMassstat.errorfloatasiniProjected semi-major axissolRadphys.angSize.smajAxisfloate_asiniError on asinisolRadstat.errorfloatNameBinary name (HD 154010)meta.id;meta.maincharJ/MNRAS/496/2605/table9V-band LC model parameters of HD 154010recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameBinary name (HD 154010)meta.id;meta.maincharPOrbital perioddtime.perioddoubleT0Ephemeris time (HJD-2452709)dtime.epochfloate_T0Error on T0dstat.errorfloatTeff1Primary effective temperatureKphys.temperature.effectiveintTeff2Secondary effective temperatureKphys.temperature.effectiveinte_Teff2Error on Teff2Kstat.errorintqM2/M1 mass ratiophys.massfloatL1/L1+2Primary luminosity to total luminosity ratiophys.luminosity;arith.ratiofloate_L1/L1+2Error on L1/L1+2stat.errorfloateEccentricity (fixed to 0)src.orbital.eccentricityfloatomegaArgument of periastrondegsrc.orbital.periastronfloatiInclinationdegsrc.orbital.inclinationfloate_iError on idegstat.errorfloatOmega1Surface gravity potential of the primaryarith.factor;phys.gravityfloate_Omega1Error on Omega1stat.errorfloatOmega2Surface gravity potential of the secondaryarith.factor;phys.gravityfloate_Omega2Error on Omega2stat.errorfloatr1Fractional radius of the primary (1)phys.size.radius;arith.ratiofloate_r1Error on r1stat.errorfloatr2Fractional radius of the secondary (1)phys.size.radius;arith.ratiofloate_r2Error on r2stat.errorfloatchi2Reduced chi-squaredstat.fit.chi2floatJ/MNRAS/496/2605/table10Binary stellar parameters of HD 154010recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameBinary name (HD 154010)meta.id;meta.maincharSpType1Spectral type of the primarysrc.spTypecharSpType2Spectral type of the secondarysrc.spTypecharM1Mass of the primarysolMassphys.massfloate_M1Error on M1solMassstat.errorfloatM2Mass of the secondarysolMassphys.massfloate_M2Error on M2solMassstat.errorfloatR1Radius of the primarysolRadphys.size.radiusfloate_R1Error on R1solRadstat.errorfloatR2Radius of the secondarysolRadphys.size.radiusfloate_R2Error on R2solRadstat.errorfloataSemi-major axissolRadphys.angSize.smajAxisfloate_aError on asolRadstat.errorfloatPOrbital perioddtime.perioddoubleiInclinationdegsrc.orbital.inclinationfloate_iError on idegstat.errorfloatqMass ratio M1/M2phys.massfloate_qError on qstat.errorfloateEccentricity (fixed to 0)src.orbital.eccentricityfloatlogg1Surface gravity of the primarylog(cm.s**-2)phys.gravityfloate_logg1Error on logg1log(cm.s**-2)stat.errorfloatlogg2Surface gravity of the secondarylog(cm.s**-2)phys.gravityfloate_logg2Error on logg2log(cm.s**-2)stat.errorfloatVmagVisual magnitude of the systemmagphot.mag;em.opt.VfloatV1magVisual magnitude of the primarymagphot.mag;em.opt.Vfloate_V1magError on V1magmagstat.error;phot.magfloatV2magVisual magnitude of the secondarymagphot.mag;em.opt.Vfloate_V2magError on V2magmagstat.error;phot.magfloatB-VB-V colour index of the systemmagphot.color;em.opt.B;em.opt.Vfloate_B-VError on B-Vmagstat.error;phot.color;em.opt.BfloatTeff1Effective temperature of the primaryKphys.temperature.effectiveinte_Teff1Error on Teff1Kstat.errorintTeff2Effective temperature of the secondaryKphys.temperature.effectiveinte_Teff2Error on Teff2Kstat.errorintlogL1Logarithm of the primary luminositysolLumphys.luminosityfloate_logL1Error on logL1solLumstat.errorfloatlogL2Logarithm of the secondary luminositysolLumphys.luminosityfloate_logL2Error on logL2solLumstat.errorfloatMbol1Bolometric magnitude of the primarymagphys.magAbs.bolfloate_Mbol1Error on Mbol1magstat.errorfloatMbol2Bolometric magnitude of the secondarymagphys.magAbs.bolfloate_Mbol2Error on Mbol2magstat.errorfloatVMAG1Absolute visual magnitude of the primarymagphys.magAbsfloate_VMAG1Error on VMAG1magstat.errorfloatVMAG2Absolute visual magnitude of the secondarymagphys.magAbsfloate_VMAG2Error on VMAG2magstat.errorfloatBC1Bolometric correction of the primarymagphot.mag.bcfloate_BC1Error on BC1magstat.errorfloatBC2Bolometric correction of the secondarymagphot.mag.bcfloate_BC2Error on BC2magstat.errorfloatK1Velocity amplitude of the primarykm/sphys.velocfloate_K1Error on K1km/sstat.errorfloatK2Velocity amplitude of the secondarykm/sphys.velocfloate_K2Error on K2km/sstat.errorfloatVsysSystemic velocitykm/sphys.velocfloate_VsysError on Vsyskm/sstat.errorfloatVsynch1Synchronization velocity of the primarykm/sphys.velocfloate_Vsynch1Error on Vsynch1km/sstat.errorfloatVsynch2Synchronization velocity of the secondarykm/sphys.velocfloate_Vsynch2Error on Vsynch2km/sstat.errorfloatVrot1Rotational velocity of the primarykm/sphys.veloc.rotatinte_Vrot1Error on Vrot1km/sstat.errorintVrot2Rotational velocity of the secondarykm/sphys.veloc.rotatinte_Vrot2Error on Vrot2km/sstat.errorintDistDistance of the systempcpos.distanceinte_DistError on Distpcstat.errorint