J/other/RAA/18.6ivo://CDS.VizieR/J/other/RAA/18.68doi:10.26093/cds/vizier/dx/bikgiCDSHan X.L.Zhang L.-Y.Shi J.-R.Pi Q.-F.Lu H.-P.Zhao L.-B.,Terheide R.K.Jiang L.-Y.2026-02-10T20:07:32Z2019-10-02T09:14:24ZCDS support team

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

cds-question@unistra.frvariable-starscataclysmic-variable-starsvisible-astronomysloan-photometryBig data in the form of stellar spectra from the spectroscopic survey associated with the Large Sky Area Multi-object Fiber Spectroscopic Telescope (LAMOST) are important for studying properties of cataclysmic variables (CVs). By cross matching the catalogs of CVs compiled with LAMOST DR3, acquired from October 2011 to July 2015, we obtained the first spectroscopic catalog for CVs observed by LAMOST with high signal to noise ratio, above 8. By integrating line profiles, their equivalent widths (EWs) of the H{alpha}, H{beta}, H{gamma} and H{delta}, as well as HeI 5876 and 6678{AA} lines, were calculated. There were 74 stellar spectra from 48 known CVs and three spectra from three new CV candidates. At the same time, we also collected their previously published EWs. Thirty-three objects had repeated spectra and 30 stars showed spectral variability in the H{alpha} line. Moreover, we carried out photometric follow-up studies for five CVs (UU Aqr, TT Tri, PX And, BP Lyn and RW Tri). We obtained nine new light curves and revised their linear ephemerides. For RW Tri, there is a possible oscillation with an amplitude of 0.0031(2) days and a period of 47.6+/-0.4 years, which might be caused by a third body (brown dwarf) or magnetic activity cycle.2018RAA....18...68Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/RAA/18.68CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toV/123 : Catalog of Cataclysmic Variables (Downes+ 2001-2006)V/153 : LAMOST DR4 catalogs (Luo+, 2018)J/AJ/142/181 : CVs from SDSS. VIII. The final year (Szkody+, 2011)J/MNRAS/443/3174 : 72 faint CV candidates in CRTS (Breedt+, 2014)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/RAA/18.68https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/RAA/18.68http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/RAA/18.68https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/RAA/18.68https://vizier.iucaa.in/viz-bin/votable?-source=J/other/RAA/18.68http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/RAA/18.68GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/other/RAA/18.68/table1 (Parameters of CVs observed in LAMOST DR3 spectroscopic survey)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/RAA/18.68/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/other/RAA/18.68/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/RAA/18.68/table1?GETtext/xml+votable180.050000true5.451935.08090.0055555555555555566/463 511 928 1179 1422 2079 2153-2154 2188 2244 2621 2674 2717 3189 4196 4336 4515 4532 4603 4691 4740 4790 4964 5117 5210 5650 5802 5918 6274 6643 6694 6838 7306 7426 9165 9484 9578 10434 11072 11084 15090 19009 19039 19592 19950 20351 23546 23636 23994 24061 24390 24394 24466 24483 24487 24490 26328 27341 28127 28185 450461.1166583743361574e-19 6.090060298487514e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/other/RAA/18.68?format=asciiOpticaldefaultJ/other/RAA/18.68/table1Parameters of CVs observed in LAMOST DR3 spectroscopic surveySimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintStarStar number, cvNN or nonCVnn (1)meta.id;meta.maincharLAMOSTLAMOST name (LAMOST JHHMMSS.ss+DDMMSS.s)meta.idcharONameOther Namemeta.idcharFirst[Y/N] First time this spectrum has been observed by LAMOST ?meta.codecharDateObservation datetime.epoch;obsnullableumag? SDSS u magnitudemagphot.mag;em.opt.Ufloatnullablezmag? SDSS z magnitudemagphot.mag;em.opt.Ifloatnullablegmag? SDSS g magnitudemagphot.mag;em.opt.Bfloatnullablermag? SDSS r magnitudemagphot.mag;em.opt.Rfloatnullableimag? SDSS i magnitudemagphot.mag;em.opt.IfloatnullableJmag? 2MASS J magnitudemagphot.mag;em.IR.JfloatnullableHmag? 2MASS H magnitudemagphot.mag;em.IR.HfloatnullableKmag? 2MASS K magnitudemagphot.mag;em.IR.KfloatnullablesnruSignal Noise Ratio of u filterstat.snrfloatsnrgSignal Noise Ratio of g filterstat.snrfloatsnrrSignal Noise Ratio of r filterstat.snrfloatsnriSignal Noise Ratio of i filterstat.snrfloatsnrzSignal Noise Ratio of z filterstat.snrfloatRefReference (2)meta.ref;pos.framechar_RAPositions from LAMOST DR4 (right ascension part)degpos.eq.ra;meta.main_DEPositions from LAMOST DR4 (declination part)degpos.eq.dec;meta.main