J/AcA/65/39ivo://CDS.VizieR/J/AcA/65/39doi:10.26093/cds/vizier.120650039CDSSoszynski I.Stepien K.Pilecki B.Mroz P.Udalski A.Szymanski M.K.,Pietrzynski G.Wyrzykowski L.Ulaczyk K.Poleski R.Kozlowski S.,Pietrukowicz P.Skowron J.Pawlak M.2025-09-25T20:16:13Z2017-01-03T14:21:36ZCDS support team

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

cds-question@unistra.freclipsing-binary-starsapparent-magnitudeWe present a sample of 242 ultra-short-period (Porb<0.22d) eclipsing and ellipsoidal binary stars identified in the OGLE fields toward the Galactic bulge. Based on the light curve morphology, we divide the sample into candidates for contact binaries and non-contact binaries. In the latter group we distinguish binary systems consisting of a cool main-sequence star and a B-type subdwarf (HW Vir stars) and candidates for cataclysmic variables, including five eclipsing dwarf novae. One of the detected eclipsing binary systems - OGLE-BLG-ECL-000066 - with the orbital period below 0.1d, likely consists of M dwarfs in a nearly contact configuration. If confirmed, this would be the shortest-period M-dwarf binary system currently known. We discuss possible evolutionary mechanisms that could lead to the orbital period below 0.1d in an M-dwarf binary.2015AcA....65...39Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AcA/65/39CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/439/559 : OGLE eclipsing binaries (bulge+lmc+smc) (Groenewegen+, 2005)J/A+A/572/A71 : Times of minima for 18 SMC eclipsing binaries (Zasche, 2014)J/AcA/48/563 : BVI photometry of OGLE SMC eclipsing binaries (Udalski+, 1998)J/AcA/53/1 : OGLE eclipsing binaries in LMC (Wyrzykowski+, 2003)J/AcA/54/1 : OGLE II SMC eclipsing binaries (Wyrzykowski+, 2004)J/AcA/61/103 : VI light curves of LMC eclipsing binaries (Graczyk+, 2011)J/AcA/61/103 : VI light curves of LMC eclipsing binaries (Graczyk+, 2011)J/AcA/62/33 : OGLEII detached red giant eclipsing binary twins (Nataf+, 2012)J/AcA/63/115 : OLGE-III Galactic disk eclipsing binaries (Pietrukowicz+, 2013)J/AcA/63/323 : OGLE-III SMC eclipsing binary stars (Pawlak+, 2013)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AcA/65/39https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AcA/65/39http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AcA/65/39https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AcA/65/39https://vizier.iucaa.in/viz-bin/votable?-source=J/AcA/65/39http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AcA/65/39GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AcA/65/39/list (Observational parameters of ultra-short-period eclipsing and ellipsoidal binary stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AcA/65/39/list?https://vizier.iucaa.in/viz-bin/conesearch/J/AcA/65/39/list?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AcA/65/39/list?GETtext/xml+votable180.050000true258.4205833-30.07144440.0055555555555555564/1798 5/7177 7179-7180 7183 7205 7217 7220 12009 6/28687 28698-28699 28701-28703 28706-28707 28712-28713 28725-28728 28731 28746-28747 28757 28786 28792 28794 28797-28798 28800-28801 28805 28817 28825-28826 28829-28830 28837-28839 28841-28842 28845 28847 28851 28854 28857 28860 28864-28865 28867 28874-28876 28879 28885 28893 28895 28897 28902 28906-28907 28910-28911 28914 28916 28921 28923 28926 28973 28975 29066 29185 29188 29249 29251-29252 29255 29257 29260 29267 42359 42364-42366 42837 48033 48041-48042https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AcA/65/39?format=asciidefaultJ/AcA/65/39/listObservational parameters of ultra-short-period eclipsing and ellipsoidal binary starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintLCPlot of the light curvemeta.ref.urlcharStarStar name (OGLE-BLG-ECL-NNNNNN or OGLE-BLG-ELL-NNNNNN)meta.id;meta.maincharOGLEOGLE identifier (BLGFFF.FF.NNN)meta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainTypeType of variability (1)meta.notecharImaxMaximum I magnitudemagphot.mag;em.opt.IfloatVmax? Maximum V magnitudemagphot.mag;em.opt.VfloatnullablePorbOrbital perioddtime.perioddoubleAmpI1Primary eclipse depth in I-bandmagphot.mag;em.opt.IfloatAmpI2Secondary eclipse depth in I-bandmagphot.mag;em.opt.IfloatTminEpoch of the primary eclipse minimum (HJD-2450000)dtime.epochdoubleSimbadSimbad column added by the CDSmeta.ref.urlchar