J/AJ/149/128ivo://CDS.VizieR/J/AJ/149/128doi:10.26093/cds/vizier.51490128CDSThorstensen J.R.Taylor C.J.Peters C.S.Skinner J.N.Southworth J.,Gansicke B.T.2018-05-29T17:21:52Z2015-05-13T14:08:12ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starsradial-velocityWe report follow-up spectroscopy of 29 cataclysmic variables from the Sloan Digital Sky Survey (SDSS), 22 of which were discovered by SDSS and seven of which are previously known systems that were recovered in SDSS. The periods for 16 of these objects were included in the tabulation by Gansicke et al. While most of the systems have periods less than 2hr, only one has a period in the 80-86 minutes "spike" found by Gansicke et al., and 11 have periods longer than 3hr, indicating that the present sample is skewed toward longer-period, higher-luminosity objects. Seven of the objects have spectra resembling dwarf novae, but have apparently never been observed in outburst, suggesting that many cataclysmics with relatively low variability amplitude remain to be discovered. Some of the objects are notable. SDSS J07568+0858 and SDSS J08129+1911 were previously known to have deep eclipses; in addition to spectroscopy, we use archival data from the Catalina Real Time Transient Survey to refine their periods. We give a parallax-based distance of 195(+54,-39)pc for LV Cnc (SDSS J09197+0857), which at P_orb_=81m has the shortest orbital period in our sample. SDSS J08091+3814 shows both the spectroscopic phase offset and phase-dependent absorption found in SW Sextantis stars. The average spectra of SDSS J08055+0720 and SDSS J16191+1351 show contributions from K-type secondaries, and SDSS J080440+0239 shows a contribution from an early M star. We use these to constrain the distances. SDSS J09459+2922 has characteristics typical of a magnetic system. SDSS11324+6249 may be a novalike variable, and if so, its orbital period (99 minutes) is unusually short for that subclass.2015AJ....149..128Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/149/128CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2014)B/gcvs : General Catalogue of Variable Stars (Samus+ 2007-2013)V/139 : The SDSS Photometric Catalog, Release 9 (Adelman-McCarthy+, 2012)V/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006)J/AJ/144/81 : Spectroscopy + photometry of CV candidates (Thorstensen+, 2012)J/AJ/142/181 : CVs from SDSS. VIII. The final year (Szkody+, 2011)J/AJ/136/2107 : Distances of cataclysmic variables (Thorstensen+, 2008)J/AJ/134/185 : Cataclysmic variables from SDSS-DR5 (Szkody+, 2007)J/AJ/126/3017 : Distances of Cataclysmic variables (Thorstensen, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/149/128https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/149/128http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/149/128https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/149/128https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/149/128http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/149/128GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/149/128/table1 (List of variables)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/149/128/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/149/128/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/149/128/table1?GETtext/xml+votable180.050000true119.22129178.97550.0055555555555555566/4174 4607 4757 4860 4964 4988 5129 5345 5485 5727 5756 6131 6456 7211 7390 8296 9738 10232 10598 21879 22010 22360 28501 31331 31357 31715 32409 32432 324363.588997330618193e-19 4.653515163505597e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/149/128?format=asciidefaultJ/AJ/149/128/table3Fits to radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarAbbreviated SDSS name of the star (HHMM, J2000)meta.idintf_StarSpectra (absorption, emission, or combined) (1)meta.codecharSDSSSDSS star identifier (JHHMMSS.ss+DDMMSS.s) (G1)meta.id;meta.maincharVPVelocity Plotmeta.ref.urlcharT0? Heliocentric Julian Date T_0_ (HJD-2400000 (2)dtime.epochdoublenullablee_T0]0/0.01]? Uncertainty in T0dstat.errorfloatnullableP[0.05/0.29] Period (2)dtime.perioddoublef_PFlag for refined eclipse period (3)meta.codechare_P]0/0.002] Uncertainty in Pdstat.errordoubleK? The K parameter (semi-amplitude) (2)km/sphys.veloc;src.orbitalfloatnullablee_K[3/234]? Uncertainty in Kkm/sstat.errorintnullablegam? The {gamma} parameter (systemic velocity) (2)km/sphys.veloc;pos.heliocentricintnullablee_gam[2/17]? Uncertainty in {gamma}km/sstat.errorintnullableN[16/158]? Number of spectra usedmeta.numberintnullablerms[7/61]? The rms residual of the fit ({sigma})km/sstat.fit.residual;stat.fit.param;meta.modelledintnullableJ/AJ/149/128/table1List of variablesNvNumber of velocities (table2)meta.numberintnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarAbbreviated SDSS name of the star (HHMM, J2000)meta.idintNoNumber of orbits (table3)meta.numberintnullableSDSSSDSS star identifier (JHHMMSS.ss+DDMMSS.s) (G1)meta.id;meta.maincharprimaryONameOther star namemeta.idcharn_ONameAdditional note on star name (1)meta.notecharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.maingmagSDSS g-band magnitudemagphot.mag;em.opt.BfloatVmagSynthetic V-band magnitude (2)magphot.mag;em.opt.VfloatRefReference for position and gmag (3)meta.ref;pos.framenullableSDSS9Display the SDSS-DR9 data (Adelman-McCarthy et al. 2012, cat. V/139)meta.ref.urlcharSloanDisplay the SDSS data for this starmeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharJ/AJ/149/128/table2Radial velocitiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS star identifier (HHMMSS.ss+DDMMSS.s, J2000)meta.id;meta.maincharHJDUTC Heliocentric Julian Date of mid-exposuredtime.epochdoubleRVeRadial velocity from emission lineskm/sphys.veloc;pos.heliocentricinte_RVeUncertainty in RVekm/sstat.errorintRVa? Radial velocity from absorption lineskm/sphys.veloc;pos.heliocentricintnullablee_RVa? Uncertainty in RVakm/sstat.errorintnullable