J/MNRAS/443/3174ivo://CDS.VizieR/J/MNRAS/443/3174doi:10.26093/cds/vizier.74433174CDSBreedt E.Gansicke B.T.Drake A.J.Rodriguez-Gil P.Parsons S.G.,Marsh T.R.Szkody P.Schreiber M.R.Djorgovski S.G.2024-08-10T20:18:21Z2016-08-03T08:06:18ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starsvisible-astronomysloan-photometryOver six years of operation, the Catalina Real-time Transient Survey (CRTS) has identified 1043 cataclysmic variable (CV) candidates - the largest sample of CVs from a single survey to date. Here, we provide spectroscopic identification of 85 systems fainter than g>=19, including three AM Canum Venaticorum binaries, one helium-enriched CV, one polar and one new eclipsing CV. We analyse the outburst properties of the full sample and show that it contains a large fraction of low-accretion-rate CVs with long outburst recurrence times. We argue that most of the high-accretion-rate dwarf novae in the survey footprint have already been found and that future CRTS discoveries will be mostly low-accretion-rate systems. We find that CVs with white-dwarf-dominated spectra have significantly fewer outbursts in their CRTS light curves compared to disc-dominated CVs, reflecting the difference in their accretion rates. Comparing the CRTS sample to other samples of CVs, we estimate the overall external completeness to be 23.6 per cent, but show that as much as 56 per cent of CVs have variability amplitudes that are too small to be selected using the transient selection criteria employed by current ground-based surveys. The full table of CRTS CVs, including their outburst and spectroscopic properties examined in this paper, is provided in the online materials.2014MNRAS.443.3174Bhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/443/3174CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)J/ApJS/213/9 : Catalina Surveys periodic variable stars (Drake+, 2014)J/MNRAS/441/1186 : Cataclysmic variables from CRTS (Drake+, 2014)J/MNRAS/453/1562 : CRTS close supermassive black hole binaries (Graham+, 2015)J/MNRAS/456/4441 : Cataclysmic variables outburst catalogue (Coppejans+, 2016)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/443/3174https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/443/3174http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/443/3174https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/443/3174https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/443/3174http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/443/3174GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/443/3174/targets (Observation log (table 1) and spectral properties and classification of our spectroscopic targets (table 2))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/443/3174/targets?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/443/3174/targets?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/443/3174/targets?GETtext/xml+votable180.050000true12.2597.7910.0055555555555555566/1563 4130 4145 4219 4269 4273 4294 4437 4695 4714 4721 4773 5064 5071 5089 5375 5569 5584 5626 5929 6148 6257 6266 6439 6491 6531 6608 6611 8423 8566 8610 9027 9189 9402 9520 9645 9656 9758 9923 10242 10316 11396 12398 12511 18167 18354 18533 19050 19828 20162 21831 21850 21862 22012 22955 22958 23400 25683 26207 26358 26554 27426 27446 28333 28370 28616 31586 31904 32505 32677 44737 491513.588997330618193e-19 4.653515163505597e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/443/3174?format=asciiOpticaldefaultJ/MNRAS/443/3174/targetsObservation log (table 1) and spectral properties and classification of our spectroscopic targets (table 2)ComCommentsmeta.noteANameAlternative namemeta.idcharmoreindicates observation informationsmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCRTSCRTS name (JHHMMSS.s+DDMMSS)meta.id;meta.maincharprimaryRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainInstInstrumentmeta.id;instrcharObsObservation datestime.epoch;obsnullableExpTimeExposure time (1)mintime.duration;obs.exposurefloatumagBest estimates of the quiescent brightness in SDSS g magnitude (from SDSS DR7 and DR9)magphot.mag;em.opt.UfloatFWHM? Velocity width, refers to H{alpha}, except for the starred values, which refer to HeI {lambda}5876 (1)km/sspect.dopplerVeloc;em.line.Halphaintnullablen_FWHM[*] * : No hydrogen in the spectrum, linewidth refers to the HeI {lambda}5876 linemeta.notecharPorb? Orbital perioddtime.perioddoublenullableu_PorbUncertainty flag on Porbmeta.code.errorchare_Porb? rms uncertainty on Porbdstat.errordoublenullablen_Porb[p] Note on Porb (2)meta.notecharr_PorbReference for Porb (3)meta.ref;pos.framecharClassClassification/Properties (4)meta.code.classcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/MNRAS/443/3174/table3Dereddened magnitudes of the AM CVn systems and helium-enriched binaries identified in our follow-up sampleMJD9? SDSS DR9 MJDdtime.epochfloatnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCRTSCRTSmeta.id;meta.maincharFUV? GALEX FUV dereddened magnitudemagphot.mag;em.UV.100-200nmfloatnullableNUV? GALEX NUV dereddened magnitudemagphot.mag;em.UVfloatnullableumag7? SDSS DR7 dereddened u magnitudemagphot.mag;em.opt.Ufloatnullablegmag7? SDSS DR7 dereddened g magnitudemagphot.mag;em.opt.Bfloatnullableg-r7? SDSS DR7 dereddened g-r colour indexmagphot.color;em.opt.B;em.opt.RfloatnullableMJD7? SDSS DR7 MJDdtime.epochfloatnullableumag9? SDSS DR9 dereddened u magnitudemagphot.mag;em.opt.Ufloatnullablegmag9? SDSS DR9 dereddened g magnitudemagphot.mag;em.opt.Bfloatnullableg-r9? SDSS DR9 dereddened g-r colour indexmagphot.color;em.opt.B;em.opt.RfloatnullableNoteNotes (1)meta.notecharJ/MNRAS/443/3174/table4CRTS CVs with SDSS BOSS spectrarecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSSDSS designation (JHHMMSS.ss+DDMMSS.s)meta.idcharCRTSCRTS designation (JHHMMSS.s+DDMMSS)meta.id;meta.mainchargmagSDSS g magnitudemagphot.mag;em.opt.Bfloatn_gmag[a] a: estimated from spectrum, not SDSS photometrymeta.notecharPlateSDSS plate numbermeta.id;instr.plateintMJDSDSS MJD numbertime.epochintFiberSDSS fiber numbermeta.idintn_Fiber[b] b: spectrum taken as part of the SDSS Legacy survey, using the original SDSS spectrographmeta.notecharComCommentsmeta.notecharJ/MNRAS/443/3174/table5*Outburst spectra of CVs as observed by PESSTO as part of supernova follow-up observationsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintCRTSCRTS designation (JHHMMSS.s+DDMMSS)meta.id;meta.maincharObs.dateObservation datetime.epoch;obsnullableNoteReference note (1)meta.notecharSimbadSimbad column added by the CDSmeta.ref.urlchar