J/A+A/649/A109ivo://CDS.VizieR/J/A+A/649/A109doi:10.26093/cds/vizier.36490109CDSGraczyk D.Pietrzynski G.Galan C.Gieren W.Tkachenko A.,Anderson R.I.Gallenne A.Gorski M.Hajdu G.Kaluszynski M.,Karczmarek P.Kervella P.Maxted P.F.L.Nardetto N.Narloch W.,Pavlovski K.Pilecki B.Pych W.Southworth J.Storm J.Suchomska K.,Taormina M.Villanova S.Wielgorski P.Zgirski B.Konorski P.2025-11-27T20:00:58Z2021-05-26T16:06:38ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsvisible-astronomymedium-band-photometryradial-velocityThe surface brightness-colour relation (SBCR) is a basic tool for establishing precise and accurate distances within the Local Group. Detached eclipsing binary stars with accurately determined radii and trigonometric parallaxes allow calibration of the SBCRs with unprecedented accuracy. We analysed four nearby eclipsing binary stars containing late F-type main sequence components: AL Ari, AL Dor, FM Leo, and BN Scl. We determined very precise spectroscopic orbits and combined them with high-precision ground- and space-based photometry. We derived the astrophysical parameters of their components with mean errors of 0.1% for mass and 0.4% for radius. We combined those four systems with another 24 nearby eclipsing binaries with accurately known radii from the literature for which Gaia EDR3 parallaxes are available in order to derive the SBCRs. The resulting SBCRs cover stellar spectral types from B9 V to G7 V. For calibrations, we used Johnson optical B and V , Gaia GBP and G, and 2MASS JHK bands. The most precise relations are calibrated using the infrared K band and allow angular diameters of A-, F-, and G-type dwarf and subgiant stars to be predicted with a precision of 1%2021A&A...649A.109Ghttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/649/A109CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/350 : Gaia EDR3 (Gaia Collaboration, 2020)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/649/A109https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/649/A109http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/649/A109https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/649/A109https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/649/A109http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/649/A109GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/649/A109/table1 (Basic daata on the eclipsing binary stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/649/A109/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/649/A109/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/649/A109/table1?GETtext/xml+votable180.050000true40.651416712.73550.0055555555555555566/183 27029 33237 469343.322582951404819e-19 3.852589004194616e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/649/A109?format=asciiOpticaldefaultJ/A+A/649/A109/table1Basic daata on the eclipsing binary starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRAJ2000Simbad Right Ascension (J2000.0)pos.eq.ra;meta.mainDEJ2000Simbad Declination (J2000.0)pos.eq.dec;meta.mainplxGaia/EDR3 parallaxmaspos.parallax.trigfloate_plxrms uncertainty on plxmasstat.error;pos.parallaxfloatSpTypeSpectral type primary+secondarysrc.spTypecharVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.error;phot.magfloatB-VB-V colour indexmagphot.color;em.opt.B;em.opt.Vfloate_B-Vrms uncertainty on B-Vmagstat.error;phot.color;em.opt.BfloatPobsObserved perioddtime.perioddoubleNRVNumber of radial velocity measurements in table3.datmeta.numberintVCShow the Radial Velocity curvesmeta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/A+A/649/A109/table2*Stromgren normalized ubvy photometry of AL ArirecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintDateObservation date (HJD-2450000)dtime.epoch;obsdoubleFuNormalized flux in u bandphot.flux;arith.ratiodoubleFvNormalized flux in v bandphot.flux;arith.ratiodoubleFbNormalized flux in b bandphot.flux;arith.ratiodoubleFyNormalized flux in y bandphot.flux;arith.ratiodoubleJ/A+A/649/A109/table3Velocimetry of four eclipsing binary starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameName of eclipsing binary star (1)meta.id;meta.maincharDateObservation date (HJD-2450000)dtime.epoch;obsdoubleRV1Radial velocity of primary star (2)km/sspect.dopplerVelocfloate_RV1Error of RV1km/sstat.errorfloatRV2Radial velocity of secondary star (2)km/sspect.dopplerVelocdoublee_RV2Error of RV2km/sstat.errorfloatInstSpectrograph used (CORALIE or HARPS)meta.id;instrchar