J/AJ/106/2058ivo://CDS.VizieR/J/AJ/106/2058doi:10.26093/cds/vizier.51062058CDSChambliss C.R.Walker R.L.Karle J.H.Snodgrass H.B.Vracko Y.A.2023-04-06T16:50:04Z1997-12-09T20:05:55ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsvariable-starsV505 Sgr is a classical Algol system consisting of an A2 V primary and a G5 IV secondary that fills its Roche lobe. New times of minimum light are presented. The period of the eclipsing system (1.18287d) varies, due in part to an orbital light-time effect. A third component has been detected that orbits the eclipsing pair. This investigation uses the SIMPLEX algorithm [Kallrath & Linnell, ApJ, 313, 346 (1987)] and the Differential Correction code [Wilson, ApJ, 234, 1054 (1979)] to analyze two separate datasets. The results indicate the third component, an F8 V star, contributes about 5% of the light to the system. The minimum projected distance between the third component and the eclipsing pair is 37 AU. This implies an orbital period of about 105 years, a value that differs with the O-C data. The photometric solution, combined with recent spectroscopic data, yields R(1)=2.14R(Sun) and R(2)=2.24R(Sun) and M(1)=2.20M(Sun) and M(2)=1.15M(Sun).1993AJ....106.2058Chttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/106/2058CatalogResearchIsServedByTAP VizieR generic servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/106/2058https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/106/2058http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/106/2058https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/106/2058https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/106/2058http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/106/2058GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapOpticaldefaultJ/AJ/106/2058/tableKarle observations of V505 SgrrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintHJDHeliocentric Julian Datedtime.epochdoublePhase[0/1[ Phasetime.phasedoubleAngle[0/360[ Phase angledegsrc.orbitalfloatDeltaDelta magnitudemagphot.mag;arith.difffloat