J/PASP/124/411ivo://CDS.VizieR/J/PASP/124/411doi:10.26093/cds/vizier.61240411CDSWilliamon R.M.Sowell J.R.2025-09-09T14:14:21Z2013-04-26T13:43:45ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsvisible-astronomybroad-band-photometryYY Cet is a 10.5 mag semidetached variable with a 19 hr orbital period. The Wilson-Devinney program is used to simultaneously solve two new sets of UBV light curves together with preexisting photometry and single-line radial velocity measurements . The system has the lower-mass component completely filling its Roche lobe. The resulting masses are M1=1.78+/-0.19M_{sun}_ and M2=0.92+/-0.10M_{sun}_, and the radii are R1=2.08+/-0.08R_{sun}_ and R2=1.62+/-0.06R_{sun}_. Its computed distance is 534+/-28pc. Light- and velocity-curve parameters, orbital elements, and absolute dimensions are presented. A study of published TOM observations indicates that the period changed around 1999.2012PASP..124..411Whttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/PASP/124/411CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/PASP/124/411https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/PASP/124/411http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/PASP/124/411https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/PASP/124/411https://vizier.iucaa.in/viz-bin/votable?-source=J/PASP/124/411http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/PASP/124/411GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/PASP/124/411/table1Photometric observations from Fernbank ObservatoryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-VHeliocentric Julian date (HJD-2400000)dtime.epochdoubledVmagDifferential V magnitudemagphot.mag;em.opt.V;arith.difffloatHJD-BHeliocentric Julian date (HJD-2400000)dtime.epochdoubledBmagDifferential B magnitudemagphot.mag;em.opt.B;arith.difffloatHJD-UHeliocentric Julian date (HJD-2400000)dtime.epochdoubledUmagDifferential U magnitudemagphot.mag;em.opt.U;arith.difffloatJ/PASP/124/411/table2Photometric Observations from the Mt. John University ObservatoryrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJD-VHeliocentric Julian date (HJD-2400000)dtime.epochdoubledVmagDifferential V magnitudemagphot.mag;em.opt.V;arith.difffloatHJD-BHeliocentric Julian date (HJD-2400000)dtime.epochdoubledBmagDifferential B magnitudemagphot.mag;em.opt.B;arith.difffloatHJD-UHeliocentric Julian date (HJD-2400000)dtime.epochdoubledUmagDifferential U magnitudemagphot.mag;em.opt.U;arith.difffloat