J/A+A/692/A168ivo://CDS.VizieR/J/A+A/692/A168doi:10.26093/cds/vizier.36920168CDSLei Y.Zhou G.Wang L.Li G.Li K.Yi T.2025-02-26T20:02:17Z2024-12-09T09:24:37ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsphotometryradial-velocitySemi-detached eclipsing binaries offer an exceptional opportunity to validate the evolutionary models of interacting binaries. This entails determining the absolute parameters and evaluating the evolutionary status of the binary components through simultaneous analysis of both light and radial velocity curves. The Transiting Exoplanet Survey Satellite (TESS) provides high-precision light curves, while the Large Sky Area Multi-Object Fibre Spectroscopic Telescope Medium-Resolution spectroscopic Survey (LAMOST MRS) offers multiple epoch observations. The fusion of these data arises the chance to derive precise parameters for binaries. The aim of this study is to estimate the absolute parameters of semi-detached binary components, offer potential explanations for their evolutionary status, and investigate the long-term variations of orbital periods to explore their underlying causes. By cross-matching the eclipsing binary catalogue from TESS with that from LAMOST MRS, semi-detached eclipsing binaries with radial velocities coverage spanning more than 0.3 phases were authenticated. The absolute parameters for these systems were determined by simultaneous modelling of light curves and radial velocities using the Wilson-Devinney programme. Additionally, the secular orbital variations were further analysed using O-C curves. Eight semi-detached eclipsing binaries have been identified. Among them, seven contain primary stars situated within the main-sequence band, while their secondaries are all in evolved stages. This suggests that these systems likely originated as detached binaries and have undergone a reversal of the mass ratio. However, TIC 428257299 is an exception where the primary is Roche lobe-filling, and its secondary has experienced mass loss events. Additionally, TIC 8677671 and TIC 318217844 demonstrate secular cyclical variations of orbital periods. Specifically, for TIC 8677671, the cyclical change could result from magnetic activity or a third body which is likely to be compact, with a mass of at least 2.97 solar mass.2024A&A...692A.168Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/692/A168CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/692/A168https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/692/A168http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/692/A168https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/692/A168https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/692/A168http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/692/A168GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/692/A168/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/692/A168/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/692/A168/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/692/A168/stars?GETtext/xml+votable180.050000true10.184291758.848250.0055555555555555566/3022 3152 4972 7233 9203 10707 14939 15113https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/692/A168?format=asciidefaultJ/A+A/692/A168/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTICTESS Input Catalog identifier (TIC NNNNNNN)meta.id;meta.maincharRAJ2000Simbad right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Simbad declination (J2000)pos.eq.dec;meta.mainVCShow the Radial Velocity curvesmeta.ref.urlcharJ/A+A/692/A168/rvRadial velocity data (table B1)TimeBarycentric Julian date (BJD-2457000)dtime.epochdoubleRV1Radial velocity of primarykm/sspect.dopplerVelocfloate_RV1Radial velocity error of primarykm/sstat.errorfloatRV2? Radial velocity of secondarykm/sspect.dopplerVelocfloatnullablee_RV2? Radial velocity error of secondarykm/sstat.errorfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintTICTESS Input Catalog identifier (TIC NNNNNNN)meta.id;meta.mainchar