J/AJ/132/2489ivo://CDS.VizieR/J/AJ/132/2489doi:10.26093/cds/vizier.51322489CDSHenry G.W.Fekel F.C.Sowell J.R.Gearhart J.S.2017-07-04T07:08:26Z2008-11-11T17:20:32ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsphotometryOur differential BV photometric observations, acquired with an automated telescope at Fairborn Observatory, show that HD 71636 is an eclipsing binary. From follow-up red-wavelength spectroscopic observations we classify the primary and secondary as an F2 dwarf and an F5 dwarf, respectively. The system has a period of 5.01329 days and a circular orbit. We used the Wilson-Devinney program to simultaneously solve our BV light curves and radial velocities and determined a number of fundamental properties of the system. Comparison with evolutionary tracks indicates that both stars are well ensconced on the main sequence. The age of the system is about 1.2 billion years.2006AJ....132.2489Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/132/2489CatalogResearchIsServedByTAP VizieR generic servicerelated-toJ/AJ/129/2815 : Eleven new {gamma} Doradus variables (Henry+, 2005)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/132/2489https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/132/2489http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/132/2489https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/132/2489https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/132/2489http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/132/2489GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/132/2489/table1Photometric observations of HD 71636recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datetime.epochdoublePhaseOrbital Phase (1)time.phasefloatDelB? HD71636-HD69715 differential magnitude in B (2)magphot.mag;arith.difffloatnullableDelV? HD71636-HD69715 differential magnitude in V (2)magphot.mag;arith.difffloatnullable