J/MNRAS/525/3597ivo://CDS.VizieR/J/MNRAS/525/3597doi:10.26093/cds/vizier.75253597CDSInight K.Gansicke B.T.Schwope A.Anderson S.F.Badenes C.Breedt E.,Chandra V.Davies B.D.R.Gentile Fusillo N.P.Green M.J.Hermes J.J.,Huamani I.A.Hwang H.Knauff K.Kurpas J.Long K.S.Malanushenko V.,Morrison S.Quiroz C.I.J.Ramos G.N.A.Roman-Lopes A.Schreiber M.R.,Standke A.Stutz L.Thorstensen J.R.Toloza O.Tovmassian G.,Zakamska N.L.2025-08-21T20:13:34Z2023-10-25T06:57:07ZCDS support team

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

cds-question@unistra.frcataclysmic-variable-starsvisible-astronomysloan-photometryorbitswhite-dwarf-starsSDSS-V is carrying out a dedicated survey for white dwarfs, single and in binaries, and we report the analysis of the spectroscopy of 118 cataclysmic variables (CVs) and CV candidates obtained during the final plug plate observations of SDSS. We identify eight new CVs, spectroscopically confirm 53 and refute eleven published CV candidates, and we report 21 new or improved orbital periods. The orbital period distribution of the SDSS-V CVs does not clearly exhibit a period gap. In common with previous studies, the distribution shows that spectroscopically identified CVs have a larger proportion of short-period systems compared to samples identified from photometric variability. Remarkably, despite a systematic search, we find very few period bouncers. We estimate the space density of period bouncers to be ~=0.2x10^6^pc^-3^, i.e. they represent only a few per cent of the total CV population. This suggests that during their final phase of evolution, CVs either destroy the donor, e.g. via a merger, or that they become detached and cease mass transfer.2023MNRAS.525.3597Ihttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/525/3597CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/MNRAS/524/4867 : CVs from SDSS (Inight+, 2023)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/525/3597https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/525/3597http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/525/3597https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/525/3597https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/525/3597http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/525/3597GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/525/3597/tablea1 (CVs from the plate survey (superseded by J/MNRAS/536/1057))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/525/3597/tablea1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/525/3597/tablea1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/525/3597/tablea1?GETtext/xml+votable180.050000true1.50064345676281.35827514714030.0055555555555555566/1242 1253 1781 1807 1929 3235 3247 3299 3589 3874 3886 4120 4129-4130 4723 4768 4782 4804 4818 5341 5485 5569 6007 6148 6214 6223 6242 6245 6258 6266 6438-6439 6528 6530-6531 6797 6799 8330 8359 9150 9165 9340 10126 10153 10316 11072 11168 11217 11760 11803 12116 12627 12630 12636 12932-12933 14336 14625 14694 15345-15346 15531 15589-15590 17723 17767 17818 17836 17983 18071 18777 19085 19089 19460 19943 21634-21635 21831 21879 22062 22145 22170 22197 22240 22789 22813 23940 23953 24288 24348 24506 26586 26588 27294 27309 27313 27325 27362 28082 30786 30788 30982 31000 31095 31145 31778 31786 31873 31952 32579 32581 409571.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/525/3597?format=asciiOpticaldefaultJ/MNRAS/525/3597/tablea1CVs from the plate survey (superseded by J/MNRAS/536/1057)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintSDSSUnique reference for the SDSS object (JHHMMSS.ss+DDMMSS.s)meta.id;meta.maincharNameOther name (where available)meta.idcharGaiaEDR3The unique source_id of the Gaia EDR3 counterpart source_idmeta.idPer? Orbital period in hourshtime.perioddoublenullablee_Per? Error on orbital periodhstat.errordoublenullablen_Per[:*] Note on Per (1)meta.notecharGmagG-band magnitude from the Gaia EDR3 surveymagphot.mag;em.optfloatDistance? Distance from Bailer-Jones et al. (2021AJ....161..147B, Cat. I/352)pcpos.distanceintnullableVTypeClassification using the taxonomy defined in the paper (2)meta.code;src.varcharCartonsCartons (3)meta.codecharRef-discBibCode of the earliest identification of this CVmeta.bib.bibcodecharRef-spBibCode of the first published spectrummeta.bib.bibcodecharRef-PBibCode of the source of the orbital periodmeta.bib.bibcodecharRAJ2000Right ascension (J2000)degpos.eq.ra;meta.mainDEJ2000Declination (J2000)degpos.eq.dec;meta.mainSimbadNameSimbad column added by the CDSmeta.idcharnullable