J/AJ/158/82ivo://CDS.VizieR/J/AJ/158/82doi:10.26093/cds/vizier.51580082CDSMilone E.F.Schiller S.J.Mellergaard Amby T.Frandsen S.2019-12-03T06:01:32Z2019-12-03T06:50:51ZCDS support team

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

cds-question@unistra.fropen-star-clusterseclipsing-binary-starsradial-velocityinfrared-photometryvisible-astronomybroad-band-photometryThe Wilson-Devinney program has been used to analyze well-calibrated photometric and new radial velocity data to determine the properties and distance of DS Andromedae, a 1.01 day period, double-lined, totally eclipsing binary system of early-F spectral type and a likely member of the intermediate-age open cluster NGC 752. The determinations of many of the system elements including the distance are robust against modest changes in model assumptions. Third light is present in all passbands at the 10% level. The weighted means of the best-fitting model yield a distance of 477+/-4+/-12 pc, equivalent to (m-M)_0_=8.390+/-0.018+/-0.060 mag, and masses of 1.655+/-0.003+/-0.030 M_Sun_ and 1.087+/-0.005+/-0.040 M_Sun_, radii of 2.086+/-0.003+/-0.013 and 1.255+/-0.005+/-0.012 R_Sun_, and effective temperatures 7056+/-21+/-140 R_Sun_ and 5971+/-33+/-130 K, for components 1 and 2, respectively, where the formal internal uncertainties are followed by conservatively estimated systematic errors. Possible but less satisfactory semidetached models produce more parameter variations and larger mean residuals. The primary star is seen to be at or very close to the main-sequence turnoff at an age of 1.55+/-0.05 Gyr but appears to be too small for its mass, whereas the secondary appears to be too luminous for its temperature and too large for its mass compared to models of single stars.2019AJ....158...82Mhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/158/82CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/118 : UBVRI standards around Celestial Equator (Landolt 1983)J/PASP/106/281 : Photometry and radial velocities in NGC752 (Daniel+, 1994)J/ApJS/176/262 : VRI photometry and theta values in open clustershttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/158/82https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/158/82http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/158/82https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/158/82https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/158/82http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/158/82GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tap2.367228618189496e-19 6.118840631666147e-19OpticalInfrareddefaultJ/AJ/158/82/table1DS Andromedae radial velocity datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoubleRV1[-106.4/127.6] Primary radial velocitykm/sspect.dopplerVelocfloatRV2[-169.6/186.3] Secondary radial velocitykm/sspect.dopplerVelocfloatJ/AJ/158/82/table15DS Andromedae photometric datarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-Ic? Heliocentric Julian Date for I_C_ passbanddtime.epochdoublenullableIcmag[9.91/10.436]? Cousins I_C_ band magnitudemagphot.mag;em.opt.Ifloatnullablew_Icmag[0.239/1]? Weight for I_C_ passbandstat.weightfloatnullableHJD-Rc? Heliocentric Julian Date for R_C_ passbanddtime.epochdoublenullableRcmag[10.178/10.704]? Cousins R_C_ band magnitudemagphot.mag;em.opt.Rfloatnullablew_Rcmag[0.157/1]? Weight for R_C_ passbandstat.weightfloatnullableHJD-VHeliocentric Julian Date for V passbanddtime.epochdoubleVmag[10.403/10.955] Johnson V band magnitudemagphot.mag;em.opt.Vfloatw_Vmag[0.093/1] Weight for V passbandstat.weightfloatHJD-B? Heliocentric Julian Date for B passbanddtime.epochdoublenullableBmag[10.782/11.372]? Johnson B band magnitudemagphot.mag;em.opt.Bfloatnullablew_Bmag[0.088/1]? Weight for B passbandstat.weightfloatnullableHJD-U? Heliocentric Julian Date for U passbanddtime.epochdoublenullableUmag[10.844/11.369]? Johnson U band magnitudemagphot.mag;em.opt.Ufloatnullablew_Umag[1]? Weight for U passbandstat.weightfloatnullable