J/AJ/147/1ivo://CDS.VizieR/J/AJ/147/1doi:10.26093/cds/vizier.51470001CDSLacy C.H.S.Torres G.Wolf M.Burks C.L.2017-07-03T14:27:06Z2014-08-29T13:41:10ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsradial-velocityphotometryNew photometric, spectroscopic, and eclipse timing observations of the eclipsing binary star HP Aur allow for very accurate orbital determinations, even in the presence of a third body and transient starspot activity. The eclipsing binary masses are determined to an accuracy of +/-0.4% and the radii to +/-0.6%. The masses are 0.9543+/-0.0041 and 0.8094+/-0.0036 solar masses, and the radii are 1.0278+/-0.0042 and 0.7758+/-0.0034 solar radii, respectively. The orbital period in the outer orbit is accurately determined for the first time: 4.332+/-0.011yr. A comparison with current theories of stellar evolution shows that the components' absolute properties can be well-matched by the current models at an age of about 7 billion years.2014AJ....147....1Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/147/1CatalogResearchIsServedByTAP 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/AJ/144/167 : Photometry and spectroscopy of CF Tauri (Lacy+, 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/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/147/1https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/147/1http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/147/1https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/147/1https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/147/1http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/147/1GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/147/1/table1Dates of minimum light for HP AurrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintType[12] Type of eclipse (1 or 2) (1)meta.noteintHJDHeliocentric Julian Date (HJD-2400000)dtime.epochdoublef_HJD[b] These dates were omitted from the final orbital fit due to very bad residualsmeta.codechare_HJD[0/0.003] Precision in HJDdstat.error;time.epochdoubler_HJD[1/47] Reference (in refs.dat file)meta.ref;pos.frameintJ/AJ/147/1/refsReferencesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRefReference identifierpos.frameintBibCodeBibliographic codemeta.bib.bibcodecharAutAuthor's namemeta.bib.authorcharComCommentmeta.notecharJ/AJ/147/1/table5NFO differential photometry of HP Aur (NFO WebScope near Silver City, New Mexico)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPhase[0/1] Orbital phasetime.phasedoubleDVmagDifferential V band magnitude (1)magphot.mag;em.opt.V;arith.difffloatHJD[52235/55463] Heliocentric Julian Date (HJD-2400000)dtime.epochdoubleJ/AJ/147/1/table4URSA differential photometry of HP Aur (URSA WebScope at Kimpel Observatory, Arkansas)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintPhase[0/1] Orbital phasetime.phasedoubleDVmagDifferential V band magnitude (1)magphot.mag;em.opt.V;arith.difffloatHJD[52235/55463] Heliocentric Julian Date (HJD-2400000)dtime.epochdoubleJ/AJ/147/1/table2CfA (Harvard-Smithsonian Center for Astrophysics) radial velocities of HP AurrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD[52532/54108] Heliocentric Julian Date (HJD-2400000)dtime.epochdoubleRV1Primary radial velocitykm/sspect.dopplerVelocfloate_RV1Uncertainty in RV1km/sstat.errorfloatRV2Secondary radial velocitykm/sspect.dopplerVelocfloate_RV2Uncertainty in RV2km/sstat.errorfloatPhase[0/1] Phase in the inner orbit (1)time.phasefloat