J/AJ/153/144ivo://CDS.VizieR/J/AJ/153/144doi:10.26093/cds/vizier.51530144CDSOliveira A.S.Rodrigues C.V.Cieslinski D.Jablonski F.J.,Silva K.M.G.Almeida L.ARodriguez-Ardila A.Palhares M.S.2020-05-28T06:51:28Z2017-03-10T13:16:54ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starsspectroscopyThe increasing number of synoptic surveys made by small robotic telescopes, such as the photometric Catalina Real-Time Transient Survey (CRTS), provides a unique opportunity to discover variable sources and improves the statistical samples of such classes of objects. Our goal is the discovery of magnetic Cataclysmic Variables (mCVs). These are rare objects that probe interesting accretion scenarios controlled by the white-dwarf magnetic field. In particular, improved statistics of mCVs would help to address open questions on their formation and evolution. We performed an optical spectroscopy survey to search for signatures of magnetic accretion in 45 variable objects selected mostly from the CRTS. In this sample, we found 32 CVs, 22 being mCV candidates, 13 of which were previously unreported as such. If the proposed classifications are confirmed, it would represent an increase of 4% in the number of known polars and 12% in the number of known IPs. A fraction of our initial sample was classified as extragalactic sources or other types of variable stars by the inspection of the identification spectra. Despite the inherent complexity in identifying a source as an mCV, variability-based selection, followed by spectroscopic snapshot observations, has proved to be an efficient strategy for their discoveries, being a relatively inexpensive approach in terms of telescope time.2017AJ....153..144Ohttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/153/144CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/ApJ/696/870 : Catalina Real-time Transient Survey (CRTS) (Drake+, 2009)J/MNRAS/441/1186 : Cataclysmic variables from CRTS (Drake+, 2014)J/MNRAS/443/3174 : 72 faint CV candidates in CRTS (Breedt+, 2014)J/A+A/573/A61 : Photometry of new eclipsing CVs (Southworth+, 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/AJ/153/144https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/153/144http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/153/144https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/153/144https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/153/144http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/153/144GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/153/144/table1 (List of objects observed)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/153/144/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/153/144/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/153/144/table1?GETtext/xml+votable180.050000true16.05-3.228060.005555555555555556Associated datahttps://cdsarc.cds.unistra.fr/assocdata/?obs_collection=J/AJ/153/1446/491 529 4324 13575 14336 17813 17986 18672 19153 19259 21729 23179 23469 23888 24205 25060 25692 26167 26897 29675 30052 30861 31690 32322 38788 38949 40283 40293 42972 43358 43444 44278 44771 44866 45417 45766 45784 45859 47526 48277 48611 48724 48728 48759 49118https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/153/144?format=asciidefaultJ/AJ/153/144/table1List of objects observedspspectrummeta.ref.urlcharsp2spectrummeta.ref.urlcharSimbadNameSimbad column added by the CDSmeta.idcharTypeType of objects (1)src.classcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharSNameAbreviation namemeta.idcharRAJ2000Right ascension (J2000)pos.eq.ra;meta.mainDEJ2000Declination (J2000)pos.eq.dec;meta.mainObs.Date? Date of observation(s)time.epochcharTel? Telescope used for observationsinstr.setupcharExpTime? Exposure timestime.duration;obs.exposureintnullableFileNameName of the fits spectrum file in subdirectory fitsmeta.id;meta.fitscharFileName2Name of the second fits spectrum file for CSS2108-03 and USNO0825-18 in subdirectory fitsmeta.id;meta.filechar