J/A+A/510/A100ivo://CDS.VizieR/J/A+A/510/A100doi:10.26093/cds/vizier.35100100CDSSouthworth J.Copperwheat C.M.Gaensicke B.T.Pyrzas S.2010-04-25T22:03:03Z2010-03-16T08:12:47ZCDS support team

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

cds-question@unistra.freclipsing-binary-starssolar-system-planetsphotometryWe present photometry of nine cataclysmic variable stars identified by the Sloan Digital Sky Survey, aimed at measuring the orbital periods of these systems. Four of these objects show deep eclipses, from which we measure their orbital periods. The light curves of three of the eclipsing systems are also analysed using the LCURVE code, and their mass ratios and orbital inclinations determined. SDSS J075059.97+141150.1 has an orbital period of 134.1564+/-0.0008min, making it a useful object with which to investigate the evolutionary processes of cataclysmic variables. SDSS J092444.48+080150.9 has a period of 131.2432+/-0.0014min and is probably magnetic. The white dwarf ingress and egress phases are very deep and short, and there is no clear evidence that this object has an accretion disc. SDSS J115207.00+404947.8 and SDSS J152419.33+220920.1 are nearly identical twins, with periods of 97.5+/-0.4 and 93.6+/-0.5min and mass ratios of 0.14+/-0.03 and 0.17+/-0.03, respectively. Their eclipses have well-defined white dwarf and bright spot ingress and egress features, making them excellent candidates for detailed study. All four of the orbital periods presented here are shorter than the 2-3 hour period gap observed in the known population of cataclysmic variables.2010A&A...510A.100Shttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/510/A100CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/373/687 : Spectra of 5 faint cataclysmic variables (Southworth+, 2006)J/A+A/507/929 : Light curves of SDSS J100658.40+233724.4 (Southworth+, 2009)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/510/A100https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/510/A100http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/510/A100https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/510/A100https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/510/A100http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/510/A100GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/510/A100/stars (List of the stars)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/510/A100/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/510/A100/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/510/A100/stars?GETtext/xml+votable180.050000true47.71525-7.91672220.0055555555555555566/4123 4173 4747 4769 5457 8630 22363 22485 36719https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/510/A100?format=asciiOpticaldefaultJ/A+A/510/A100/starsList of the starsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSStar name (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharPeriod? Orbital perioddtime.perioddoublenullableFile.BName of B light curve filemeta.notecharFile.VName of V light curve filepos.cartesian.y;meta.filecharFile.gName of g light curve filemeta.id;meta.filecharFile.rName of r light curve filemeta.id;meta.filecharLCplot of the light curve(s)meta.ref.urlcharDR7Display all details of SDSS7 photometry for this starmeta.ref.urlcharSloanDisplay the SDSS data for this starmeta.ref.urlcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.main