J/other/ARep/68.ivo://CDS.VizieR/J/other/ARep/68.472CDSVolkov I.M.Naroenkov S.A.Kravtsova A.S.2025-01-09T07:52:04Z2024-08-22T09:57:40ZCDS support team

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

cds-question@unistra.frvariable-starsinfrared-photometryvisible-astronomybroad-band-photometryNew high-precision photometric measurements of the V957 Cep system (P=1.99d, V=11.17, e=0.127, B6 V+B8 V), as well as an integrated approach to orbital parameters determining based both on photometric solutions of the light curves and on the study of the course of residual deviations of the minima timings from the linear formula O-C made it possible for the first time to accurately measure the apsidal motion rate: {omega}_obs_=2.91{deg}/year, which coincided with the theoretical value under the condition of the orbital and axial rotations synchronism: {omega}_theor_=2.92{deg}/year. The physical parameters of the component stars were obtained: T1=14550+/-300K, M1=4.0+/-0.2M_{sun}_, R1=2.55+/-0.05R_{sun}_, T2=12400+/-250K, M2=3.0+/-0.15M_{sun}_, R2=1.88+/-0.05R_{sun}_. This set of parameters corresponds to stars of zero age, recently descended to ZAMS. The secondary component is a pulsating variable star of the {beta} Cephei type.2024ARep...68..472Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/ARep/68.472CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/ARep/68.472https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/ARep/68.472http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/ARep/68.472https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/ARep/68.472https://vizier.iucaa.in/viz-bin/votable?-source=J/other/ARep/68.472http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/ARep/68.472GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/other/ARep/68.472/bbandV957 Cep B band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHelicoentric Julian day for the middle of expositiondtime.epochdoublemagMagnitude of the star in bandmagphot.magfloatBand[B V R Rc] Observed bandinstr.bandpasscharJ/other/ARep/68.472/rbandV957 Cep R band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHelicoentric Julian day for the middle of expositiondtime.epochdoublemagMagnitude of the star in bandmagphot.magfloatBand[B V R Rc] Observed bandinstr.bandpasscharJ/other/ARep/68.472/rcbandV957 Cep Rc band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHelicoentric Julian day for the middle of expositiondtime.epochdoublemagMagnitude of the star in bandmagphot.magfloatBand[B V R Rc] Observed bandinstr.bandpasscharJ/other/ARep/68.472/vbandV957 Cep V band light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHelicoentric Julian day for the middle of expositiondtime.epochdoublemagMagnitude of the star in bandmagphot.magfloatBand[B V R Rc] Observed bandinstr.bandpasschar