J/A+AS/123/273ivo://CDS.VizieR/J/A+AS/123/273CDSHameury J.M.Ritter H.1998-09-05T09:46:26Z1998-09-05T09:44:55ZCDS support team

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

cds-question@unistra.fraccretionWe give a simple, but accurate method that can be used to account for illumination in compact binary systems which have a low-mass companion, even if spherically symmetric illumination of the secondary star (not necessarily on the main sequence) is not assumed. This is done by introducing a multiplicative factor {PHI} in the Stefan-Boltzmann surface boundary condition, which accounts for the blocking of the intrinsic secondary flux by X-ray heating of the photospheric layers. Numerical fits and tables for {PHI} are given for unperturbed effective temperatures in the range 2500-5600K and logg in the range 1.0-5.0.1997A&AS..123..273Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+AS/123/273CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+AS/123/273https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+AS/123/273http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+AS/123/273https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+AS/123/273https://vizier.iucaa.in/viz-bin/votable?-source=J/A+AS/123/273http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+AS/123/273GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/A+AS/123/273/table1Function G(x)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintloggSurface gravitylog(cm.s**-2)phys.gravityfloatlog(Teff)Effective temperature of the unilluminated starlog(K)phys.temperature.effectivefloatlog(1+x)log(1+x) where x is the illuminating flux in units of the unperturbed stellar fluxphot.flux.bolfloatlog(1/G(x))-log(G(x)) where G is the fraction of the interior flux that is not blocked by illuminationphot.flux.boldoubleJ/A+AS/123/273/table2Coefficients of the fit of the modified Stefan-Boltzmann surface boundary condition.recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintR2/aRatio of the secondary radius versus orbital separation (f2=R2/a)phys.size.radius;arith.ratiofloatloggSurface gravitylog(cm.s**-2)phys.gravityfloatlog(Teff)Effective temperature of the unilluminated starlog(K)phys.temperature.effectivefloata1Coefficient a1 of the polynomial fit of the modified boundary conditionstat.fit.paramdoublea2Coefficient a2 of the polynomial fit of the modified boundary conditionstat.fit.paramdoublea3Coefficient a3 of the polynomial fit of the modified boundary conditionstat.fit.paramdouble