J/AJ/144/167ivo://CDS.VizieR/J/AJ/144/167doi:10.26093/cds/vizier.51440167CDSLacy C.H.S.Torres G.Claret A.2017-07-04T07:08:19Z2014-01-20T12:30:56ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsradial-velocityvisible-astronomybroad-band-photometryccd-photometryCF Tau is now known to be an eclipsing triple star with relatively deep total and annular eclipses. New light and radial velocity curves as well as new times of minima were obtained and used for further modeling of the system. Very accurate (better than 0.9%) masses and radii of the eclipsing pair are determined from analysis of the two new light curves, the radial velocity curve, and the times of minimum light. The mass and luminosity of the distant third component is accurately determined as well. Theoretical models of the detached, evolved eclipsing pair match the observed absolute properties of the stars at an age of about 4.3Gyr and [Fe/H]=-0.14.2012AJ....144..167Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/144/167CatalogResearchIsServedByTAP VizieR generic servicerelated-toV/128 : Chromospherically Active Binaries. Third version (Eker+, 2008)B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)B/sb9 : 9th Catalogue of Spectroscopic Binary Orbits (Pourbaix+ 2004-2013)J/A+A/537/A117 : Velocity curves of SW CMa and HW CMa (Torres+, 2012)J/AJ/142/185 : Properties of the eclipsing binary stars HY Vir (Lacy+, 2011)J/AJ/139/2347 : CO And Vr light curves and RV curve (Lacy+, 2010)J/AJ/138/1622 : Absolute properties of LV Her (Torres+, 2009)J/ApJ/640/1018 : Differential photometry of V1061 Cyg (Torres+, 2006)J/AJ/130/2838 : Velocity and light curves of RW Lac (Lacy+, 2005)J/AJ/128/1340 : Properties of the EB star V459 Cas (Lacy+, 2004)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/144/167https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/144/167http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/144/167https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/144/167https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/144/167http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/144/167GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/144/167/table1Radial velocity measurements for CF TaurecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintYear[1985.98/2009.05] YearyrtimefloatHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoubledtCorrection applied to the dates of observation for light-travel time in the outer orbit ({Delta}t)dtime.epochfloatIPhase[0/1] Inner phasetime.phasefloatOPhase[0/1] Outer phasetime.phasefloatRVAa[-122.87/97.02] Primary radial velocity (G1)km/sphys.veloc;pos.heliocentricfloatRVAb[-129.27/93.27] Secondary radial velocity (G1)km/sphys.veloc;pos.heliocentricfloatRVB[-38.2/-2.67] Tertiary radial velocity (G1)km/sphys.veloc;pos.heliocentricfloatO-CAa[-6.08/7.65] Primary (O-C) residual (G1)km/sstat.fit.residualfloatO-CAb[-4.54/3.91] Secondary (O-C) residual (G1)km/sstat.fit.residualfloatO-CB[-3.3/1.69] Tertiary (O-C) residual (G1)km/sstat.fit.residualfloatJ/AJ/144/167/table2Times of eclipse for CF TaurecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintYear[1989.92/2011.84] YearyrtimefloatHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoublee_HJDUncertainty in HJD (1)dstat.error;time.epochfloatECycle number (2)meta.id;meta.mainfloatT[1/2] Eclipse type (1=deeper eclipse of the hotter component Ab; 2=eclipse of the cooler component Aa) (G1)meta.noteintMethObservational method (pe=photoelectric, ccd or ROTSE)stat.fitcharO-CResiduals from our combined orbital fitdstat.fit.residualfloatRef[1/20] Reference; in refs.dat filemeta.ref;pos.frameintJ/AJ/144/167/table4URSA differential photometry of CF Tau (URSA WebScope at Kimpel Observatory, Arkansas)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoubleDVmagDifferential V band magnitudemagphot.mag;em.opt.V;arith.difffloatJ/AJ/144/167/table5NFO differential photometry of CF Tau (NFO WebScope near Silver City, New Mexico)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoubleDVmagDifferential V band magnitudemagphot.mag;em.opt.V;arith.difffloatJ/AJ/144/167/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference numbermeta.id;meta.mainintprimaryBibCodeBibliographic codemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentsmeta.notechar