J/A+A/326/1044ivo://CDS.VizieR/J/A+A/326/1044doi:10.26093/cds/vizier.33261044CDSJordi C.Ribas I.Torra J.Gimenez A.1997-12-09T17:03:54Z1997-12-09T18:03:51ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsvisible-astronomymedium-band-photometrySystematic differences in photometric stellar surface gravity determination are studied by means of the comparison with empirical values derived from detached double-lined eclipsing binaries. Photometric gravities were computed using Moon & Dworetsky (1985MNRAS.217..305M) grids based on Kurucz (1979ApJS...40....1K) atmosphere models, and empiric al gravities were taken from Andersen (1991A&ARv...3...91A). Individual Stroemgren colours and {beta} indices of each component of the binary system have to be taken into account to correctly analyze the observed differences. A compilation of data on a sample containing 30 detached double-lined eclipsing binaries with accurate (=~1-2%) determination of mass and radius and available uvbyH_{beta}_ photometric data is also presented. Correction of the differences in terms of T_eff_ and logg for the range 11000K<T_eff_<20000K reduces the mean residuals from 0.13dex to 0.07dex. For the range 7000K<T_eff_<8500K, the consideration of metallicity effects by means of {delta}m_o_ index improves the accuracy from 0.20dex to 0.09dex.1997A&A...326.1044Jhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/326/1044CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/326/1044https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/326/1044http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/326/1044https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/326/1044https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/326/1044http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/326/1044GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/326/1044/table5 (uvbyH{beta} photometry for 30 detached eclipsing binaries)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/326/1044/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/326/1044/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/326/1044/table5?GETtext/xml+votable180.050000true335.81625-15.3322220.005555555555555556https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/326/1044?format=asciiOpticaldefaultJ/A+A/326/1044/table5uvbyH{beta} photometry for 30 detached eclipsing binariesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameIdentification name (Name, HD, BD)meta.id;meta.maincharm_NameComponent: A=primary, B=secondarymeta.code.multipcharSpTypeSpectral typesrc.spTypecharRA2000Right Ascension 2000 (hours) (4)pos.eq.ra;meta.mainDE2000Declination 2000 (sign) (4)pos.eq.dec;meta.mainnullableVmagVisual apparent magnitudemagphot.mag;em.opt.Vfloate_Vmag? Error in Vmagmagstat.errorfloat(b-y)b-y indexmagphot.color;em.opt.B;em.opt.Vfloate_(b-y)? Error in b-ymagstat.errorfloatm1m1 index ((v-b) - (b-y))magphot.colorfloate_m1? Error in m1magstat.errorfloatc1c1 index ((u-v) - (v-b))magphot.colorfloate_c1? Error in c1magstat.errorfloatbetaH{beta} indexmagspect.indexfloate_beta? Error in betamagstat.errorfloatlogg(emp)? Empirical determination of logg (1)log(cm.s**-2)phys.gravityfloatlogg(MD)? Photometric determination of logg (2)log(cm.s**-2)phys.gravityfloatlogg(cor)? Corrected photometric determination of logglog(cm.s**-2)phys.gravityfloatTeff(MD)? Photometric determination of effective temperature (2)Kphys.temperature.effectiveintNotesNotes (3)meta.notechar