J/AJ/142/117ivo://CDS.VizieR/J/AJ/142/117doi:10.26093/cds/vizier.51420117CDSSamec R.G.Labadorf C.M.Hawkins N.C.Faulkner D.R.Van Hamme W.2022-11-21T11:31:42Z2013-02-28T15:46:09ZCDS support team

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

cds-question@unistra.frvariable-starseclipsing-binary-starsinfrared-photometryvisible-astronomybroad-band-photometryWe present precision CCD light curves, a period study, photometrically derived standard magnitudes, and a five-color simultaneous Wilson code solution of the totally eclipsing, yet shallow amplitude (Av~0.4mag) eclipsing, binary V1853 Orionis. It is determined to be an extreme mass ratio, q=0.20, W-type W UMa overcontact binary. From our standard star observations, we find that the variable is a late-type F spectral-type dwarf, with a secondary component of about 0.24 solar masses (stellar type M5V). Its long eclipse duration (41 minutes) as compared to its period, 0.383-days, attests to the small relative size of the secondary. Furthermore, it has reached a Roche lobe fill-out of ~50% of its outer critical lobe as it approaches its final stages of binary star evolution, that of a fast spinning single star. Finally, a summary of about 25 extreme mass ratio solar-type binaries is given.2011AJ....142..117Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/142/117CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/142/117https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/142/117http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/142/117https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/142/117https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/142/117http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/142/117GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/142/117/table6 (Statistical summary of extreme mass ratio solar-type binaries (EMRBs))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/142/117/table6?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/142/117/table6?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/142/117/table6?GETtext/xml+votable180.050000true235.751046743.26536530.0055555555555555566/497 1291 1314 4114 6354 8357 8871 9578 9922 10351 11100 18403 19075 19914 24114 24391 27250 30237 37890 41864 43355 44981 47825 48023https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/142/117?format=asciiOpticalInfrareddefaultJ/AJ/142/117/table1Photometry of V1853 OrirecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintdmagDifferential magnitudemagphot.mag;arith.difffloatHJDHeliocentric Julian date (HJD-2454460)dtime.epochfloatBand[UBVRI] Observed bandinstr.bandpasscharJ/AJ/142/117/table6Statistical summary of extreme mass ratio solar-type binaries (EMRBs)qMass ratio (M2/M1)phys.massfloatrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameEMRBs name (last lines for Average and Standard error values)meta.id;meta.maincharinclInclinationdegsrc.orbital.inclinationfloatT1? Temperature of primaryKphys.temperatureintnullableT2? Temperature of secondaryKphys.temperatureintnullableDT? Differentce in temperatureKphys.temperatureintnullableTavg? Average temperatureKphys.temperaturefloatnullableSpTypeMK spectral typesrc.spTypecharfoFill-out factorphys.volume;arith.ratiofloatPerPerioddtime.perioddoublePchgnComment on period changemeta.notecharSpot[Yes/No ] Presence of Spotsmeta.codechar3rd[Yes/No ?] Presence of 3rd componentsmeta.codecharRefReference(s)meta.ref;pos.framecharSimbadSimbad column added by the CDSmeta.ref.urlchar_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.mainnullable_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.mainnullable