J/MNRAS/437/2831ivo://CDS.VizieR/J/MNRAS/437/2831doi:10.26093/cds/vizier.74372831CDSZhou G.Bayliss D.Hartman J.D.Bakos G.A.Penev K.Csubry Z.,Tan T.G.Jordan A.Mancini L.Rabus M.Brahm R.Espinoza N.,Mohler-Fischer M.Ciceri S.Suc V.Csak B.Henning T.Schmidt B.2024-08-07T20:12:36Z2016-04-07T12:53:02ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsvisible-astronomysloan-photometryradial-velocityWe report the discovery of four transiting F-M binary systems with companions between 0.1 and 0.2M_{sun}_ in mass by the HATSouth survey. These systems have been characterized via a global analysis of the HATSouth discovery data, combined with high-resolution radial velocities and accurate transit photometry observations. We determined the masses and radii of the component stars using a combination of two methods: isochrone fitting of spectroscopic primary star parameters and equating spectroscopic primary star rotation velocity with spin-orbit synchronization. These new very low mass companions are HATS550-016B (0.110_-0.006_^+0.005^M_{sun}_, 0.147_-0.004_^+0.003^R_{sun}_), HATS551-019B (0.17_-0.01_^+0.01^M_sun}_, 0.18_-0.01_^+0.01^R_{sun}_), HATS551-021B (0.132_-0.005_^+0.014^M_sun}_, 0.154_-0.008_^+0.006^R_{sun}_) and HATS553-001B (0.20_-0.02_^+0.01^M_sun}_, 0.22_-0.01_^+0.01^R_{sun}_). We examine our sample in the context of the radius anomaly for fully convective low-mass stars. Combining our sample with the 13 other well-studied very low mass stars, we find a tentative 5 percent systematic deviation between the measured radii and theoretical isochrone models.2014MNRAS.437.2831Zhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/437/2831CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/437/2831https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/437/2831http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/437/2831https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/437/2831https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/437/2831http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/437/2831GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/437/2831/stars (List of studied stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/437/2831/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/437/2831/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/437/2831/stars?GETtext/xml+votable180.050000true72.0971667-24.83802780.0055555555555555566/20669 20714 20875 34773https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/437/2831?format=asciiOpticaldefaultJ/MNRAS/437/2831/starsList of studied starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainPerPeriod (from table 4)dtime.perioddoubleLCShow the Light curvesmeta.ref.urlcharPhotName of the table with photometrymeta.id;meta.filecharVCShow the Radial Velocity curvesmeta.ref.urlcharRVName of the table with radial velocitiesmeta.id;meta.filecharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/437/2831/tablea1g'r'i'z' differential photometry for HATS550-016recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleFluxDifferential fluxphot.flux;arith.ratiodoublee_Fluxrms uncertainty on Fluxstat.error;phot.fluxdoubleInstInstrumentmeta.id;instrcharFilt[griz' Rc] Filtermeta.id;instr.filtercharJ/MNRAS/437/2831/tablea2r'Rc differential photometry for HATS551-019recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleFluxDifferential fluxphot.flux;arith.ratiodoublee_Fluxrms uncertainty on Fluxstat.error;phot.fluxdoubleInstInstrumentmeta.id;instrcharFilt[griz' Rc] Filtermeta.id;instr.filtercharJ/MNRAS/437/2831/tablea3r' differential photometry for HATS551-021recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleFluxDifferential fluxphot.flux;arith.ratiodoublee_Fluxrms uncertainty on Fluxstat.error;phot.fluxdoubleInstInstrumentmeta.id;instrcharFilt[griz' Rc] Filtermeta.id;instr.filtercharJ/MNRAS/437/2831/tablea4r'Rc differential photometry for HATS553-001Filt[griz' Rc] Filtermeta.id;instr.filtercharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleFluxDifferential fluxphot.flux;arith.ratiodoublee_Fluxrms uncertainty on Fluxstat.error;phot.fluxdoubleInstInstrumentmeta.id;instrcharJ/MNRAS/437/2831/tablea5Radial velocities for HATS550-016recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatInstInstrumentmeta.id;instrcharJ/MNRAS/437/2831/tablea6Radial velocities for HATS551-019recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatInstInstrumentmeta.id;instrcharJ/MNRAS/437/2831/tablea7Radial velocities for HATS551-021recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatInstInstrumentmeta.id;instrcharJ/MNRAS/437/2831/tablea8Radial velocities for HATS553-001InstInstrumentmeta.id;instrcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintBJDBarycentric Julian date (BJD-2400000)dtime.epochdoubleRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloat