J/other/ARep/68.ivo://CDS.VizieR/J/other/ARep/68.886CDSVolkov I.M.Volkova A.S.Bagaev L.A.2025-02-24T14:03:22Z2024-12-10T15:46:16ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomybroad-band-photometryNew high-precision photometric measurements of the eclipsing star V839 Cep (P=9.96-day, V(A+B)=9.64mag, e=0.07, B6 V + B7 V), which is the A component of the visual double star J21035+5925AB, have established that component B is also an eclipsing variable (P=4.075-days, B9 V + G8 V). For component A, the apsidal rotation rate was measured to be dw/dt=0.028deg/year, which exceeds the theoretical value under the condition of synchronism dw/dt=0.021 deg/year. The physical parameters of the component stars of the eclipsing pair "A" were obtained: T1=13200+/-300K, M1=(3.7+/-0.15)M_{sun}_, R1=(2.57+/-0.05)R_{sun}_, T2=11900+/-250K, M2=(3.2+/-0.15)M_{sun}_, R2=(2.42+/-0.05)R_{sun}_, and components of the eclipsing pair B: T1=10600+/-200K, M1=(2.6+/-0.2)M_{sun}_, R1=(1.97+/-0.05)R_{sun}_, T2=5540+/-50K, M2=(0.88+/-0.05)M_{sun}_, R2=(0.84+/-0.05)R_{sun}_ The age of the system is determined to be 70 Myr with solar chemical composition. The components of star "A" are pulsating variable stars of the slow Beta Cephei (SBC) type.2024ARep...68..886Vhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/ARep/68.886CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/ARep/68.886https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/ARep/68.886http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/ARep/68.886https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/ARep/68.886https://vizier.iucaa.in/viz-bin/votable?-source=J/other/ARep/68.886http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/ARep/68.886GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/other/ARep/68.886/uphotV839 Cep U light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian day for the middle of the expositiondtime.epoch;pos.heliocentricdoubleDmagDifference of magnitudes between the observation and mean plateau brightness (1)magphot.mag.sb;arith.diff;stat.meanfloatBandObserved bandinstr.bandpasscharJ/other/ARep/68.886/bphotV839 Cep B light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian day for the middle of the expositiondtime.epoch;pos.heliocentricdoubleDmagDifference of magnitudes between the observation and mean plateau brightness (1)magphot.mag.sb;obs;stat.meanfloatBandObserved bandinstr.bandpasscharJ/other/ARep/68.886/vphotV839 Cep V light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian day for the middle of the expositiondtime.epoch;pos.heliocentricdoubleDmagDifference of magnitudes between the observation and mean plateau brightness (1)magphot.mag.sb;arith.diff;stat.meanfloatBandObserved bandinstr.bandpasscharJ/other/ARep/68.886/rcphotV839 Cep Rc light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian day for the middle of the expositiondtime.epoch;pos.heliocentricdoubleDmagDifference of magnitudes between the observation and mean plateau brightness (1)magphot.mag.sb;obs;stat.meanfloatBandObserved bandinstr.bandpasscharJ/other/ARep/68.886/rphotV839 Cep R light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian day for the middle of the expositiondtime.epoch;pos.heliocentricdoubleDmagDifference of magnitudes between the observation and mean plateau brightness (1)magphot.mag.sb;obs;stat.meanfloatBandObserved bandinstr.bandpasscharJ/other/ARep/68.886/icphotV839 Cep Ic light curveBandObserved bandinstr.bandpasscharHJDHeliocentric Julian day for the middle of the expositiondtime.epoch;pos.heliocentricdoubleDmagDifference of magnitudes between the observation and mean plateau brightness (1)magphot.mag.sb;arith.diff;stat.meanfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintJ/other/ARep/68.886/iphotV839 Cep I light curverecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian day for the middle of the expositiondtime.epoch;pos.heliocentricdoubleDmagDifference of magnitudes between the observation and mean plateau brightness (1)magphot.mag.sb;arith.diff;stat.meanfloatBandObserved bandinstr.bandpasschar