J/AJ/120/1548ivo://CDS.VizieR/J/AJ/120/1548doi:10.26093/cds/vizier.51201548CDSElias II N.M.Koch R.H.2023-04-06T16:50:39Z2000-10-23T12:02:33ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsinfrared-photometryvisible-astronomybroad-band-photometryThe cool, overcontact, close binary, V523 Cassiopeiae was observed with the 1 m reflector at the US Naval Observatory, Flagstaff Station. The photometry was very good, with a precision on the order of a few millimagnitudes, but not numerous enough for complete light-curve analyses (e.g., differential corrections). A conventional published synthesis has been found acceptable as a fiducial model, and most of the observational weight has been used to develop a spot model for the stars and to support the validity of theoretical limb-darkening coefficients. Both photospheres and chromospheres contribute to the model. This result indicates that multifilter measures of this and similarly cool binaries are necessary for fuller descriptions of stellar activity cycles. A number of newly determined times of minimum light solidify the published rate of period variability.2000AJ....120.1548Ehttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/120/1548CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/120/1548https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/120/1548http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/120/1548https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/120/1548https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/120/1548http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/120/1548GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticalInfrareddefaultJ/AJ/120/1548/table2Comparison star {DELTA}M_i_ for UBVR_C_I_C filtersrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintID[2/18] Comparison star numbermeta.idintUmagU magnitudemagphot.mag;em.opt.Ufloate_Umagrms uncertainty on Umagmagstat.errorfloatBmagB magnitudemagphot.mag;em.opt.Bfloate_Bmagrms uncertainty on Bmagmagstat.errorfloatVmagV magnitudemagphot.mag;em.opt.Vfloate_Vmagrms uncertainty on Vmagmagstat.errorfloatRcmagR_C_ magnitude (Cousins)magphot.mag;em.opt.Rfloate_Rcmagrms uncertainty on Rcmagmagstat.errorfloatIcmagI_C_ magnitude (Cousins)magphot.mag;em.opt.Ifloate_Icmagrms uncertainty on Icmagmagstat.errorfloatJ/AJ/120/1548/table3V523 Cassiopeiae delmagsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian datedtime.epochdoubleFilt[UBVRI] Filtermeta.code;instr.filterchardelmagDifferential magnitude in filter (1)magphot.mag;arith.difffloate_delmagrms uncertainty on delmagmagstat.errorfloat