J/A+A/397/921ivo://CDS.VizieR/J/A+A/397/921doi:10.26093/cds/vizier.33970921CDSvan Genderen A.M.2017-07-03T14:25:47Z2003-02-21T20:45:33ZCDS support team

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

cds-question@unistra.frmultiple-starsearly-type-starsvisible-astronomybroad-band-photometryThe 1982-1985 photometry (VBLUW system) of the O3V+O8V close binary HD 93205 has been rediscussed because of new insights into its true nature and orbital changes. By comparing this data set with the one obtained by Antokhina et al. (2000ApJ...529..463A) in 1993, and using the same ephemeris to construct the light curve in the phase diagram, the effect of the apsidal motion became obvious: a phase shift between the two light curves and a small change of the shape. A phase-locked light variation in the L passband (containing the higher Balmer lines) is clearly present in the 1982-1985 data set and is presumably due to absorption if the O8 star is seen through cooler inter-binary gas, e.g. the bow-shock between the two colliding winds.2003A&A...397..921Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/397/921CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/397/921https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/397/921http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/397/921https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/397/921https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/397/921http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/397/921GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+A/397/921/table1Journal of brightness and colour indices of HD 93205 (1982-1985) in the VBLUW system (in log intensity scale) and the computed brightness V_J_ of the UBV systemrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleVwmagWalraven V magnitudemagphot.mag;em.opt.VfloatV-BV-B colour indexmagphot.colorfloatB-UB-U colour indexmagphot.colorfloatU-WU-W colour indexmagphot.colorfloatB-LB-L colour indexmagphot.colorfloatVJmagJohnson V magnitudemagphot.mag;em.opt.Vfloat