J/ApJ/783/35ivo://CDS.VizieR/J/ApJ/783/35doi:10.26093/cds/vizier.17830035CDSTerrell D.Nelson R.H.2017-06-19T07:58:07Z2016-04-06T16:14:04ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomyphotometryradial-velocityWe present new radial velocities and photometry of the short-period Algol TT Herculis. Previous attempts to model the light curves of the system have met with limited success, primarily because of the lack of a reliable mass ratio. Our spectroscopic observations are the first to result in radial velocities for the secondary star, and thus provide a spectroscopic mass ratio. Simultaneous analysis of the radial velocities and new photometry shows that the system is a double contact binary, with a rapidly rotating primary that fills its limiting lobe.2014ApJ...783...35Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJ/783/35CatalogResearchIsServedByTAP VizieR generic servicerelated-toII/336 : AAVSO Photometric All Sky Survey (APASS) DR9 (Henden+, 2016)I/259 : The Tycho-2 Catalogue (Hog+ 2000)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJ/783/35https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJ/783/35http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJ/783/35https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJ/783/35https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJ/783/35http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJ/783/35GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapInfraredOpticaldefaultJ/ApJ/783/35/table1Log of spectroscopic observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDAOImage number from Dominion Astrophysical Observatory (DAO)obs.imageintHJDMid time Heliocentric Julian Date (HJD-2400000)dtime.epochdoublePhaseOrbital phasetime.phasefloatExpExposure timestime.duration;obs.exposureintRV1Primary radial velocitykm/sspect.dopplerVelocfloate_RV1Uncertainty in RV1km/sstat.errorfloatRV2? Secondary radial velocitykm/sspect.dopplerVelocfloatnullablee_RV2? Uncertainty in RV2km/sstat.errorfloatnullableJ/ApJ/783/35/table2Photometry of TT HerculisrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintFltFilter (V, R_c_, or I_c_)pos.cartesian.ycharHJD? Heliocentric Julian Day (HJD-2400000.0)dtime.epoch;pos.heliocentricdoublenullablePhase? Orbital phasetime.phasefloatnullableDmag? Instrumental magnitude difference in Fltmagphot.mag;arith.difffloatnullable