J/ApJS/282/26ivo://CDS.VizieR/J/ApJS/282/26CDSHou W.Lin J.-M.Luo A.-L.Dai Z.-B.Dong Y.-Q.Ma S.-G.2026-08-25T11:06:22Z2026-08-25T11:54:22ZCDS support team

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

cds-question@unistra.frvariable-starsvisible-astronomyspectroscopyabsolute-magnitudetwo-color-diagramsnovaeWe present a systematic search for cataclysmic variables (CVs) using spectroscopic data from Data Release 1 of the Dark Energy Spectroscopic Instrument. Applying the Bagging-TopPush algorithm, we identified 433 CV candidates and related objects, of which 412 are confirmed CVs including 76 new systems. Subtypes were assigned through a combination of DESI spectra, Gaia data, and light curves from time-domain surveys, revealing populations of dwarf novae, novalike variables, magnetic CVs, and AM CVn binaries. Orbital periods were constrained from eclipsing light curves and DESI radial velocity curves for 14 systems. For 31 WZ Sge-type dwarf novae, we estimated white dwarf masses and radii by combining Galaxy Evolution Explorer ultraviolet photometry with DESI optical spectra, obtaining average values of 0.82M_{sun}_ for mass and 13452K for effective temperature. We also calculated the strength of the magnetic field for three polars based on the cyclotron features. Furthermore, we derived subtype-dependent space densities and found values consistent, within uncertainties, with those inferred from Sloan Digital Sky Survey, Gaia, and other survey data, though remaining lower than theoretical predictions by 1-2 orders of magnitude. Besides, we highlight several notable objects, including newly identified AM CVn systems, eclipsing systems in the period gap, donor-dominated binaries, and other unusual systems of particular interest for follow-up observations.2026ApJS..282...26Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/ApJS/282/26CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/cb : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2004)I/347 : Distances to 1.33 billion stars in Gaia DR2 (Bailer-Jones+, 2018)V/113 : Cataclysmic Binaries, LMXBs, and related objects (Ritter+, 2003)I/355 : Gaia DR3 Part 1. Main source (Gaia Collaboration, 2022)V/161 : DESI DR1 redshift catalog (DESI Col.+ 2025)J/AJ/142/181 : CVs from SDSS. VIII. The final year (Szkody+, 2011)J/MNRAS/429/2143 : Hidden population of AM CVns in the SDSS (Carter+, 2013)J/MNRAS/443/3174 : 72 faint CV candidates in CRTS (Breedt+, 2014)J/MNRAS/441/1186 : Cataclysmic variables from CRTS (Drake+, 2014)J/ApJ/901/93 : Atmosphere of hot WDs from SDSS DR12 (Bedard+, 2020)J/AJ/159/43 : CVs from LAMOST survey. I. (Hou+, 2020)J/AJ/159/198 : CVs in ZTF 1st-yr (2018-2019) (Szkody+, 2020)J/ApJS/257/65 : Cataclysmic variables from LAMOST DR6 (Sun+, 2021)J/MNRAS/513/2719 : Stellar parameters study with SED fit algo (Vines+, 2022)J/AJ/165/148 : Sp. identified CVs from LAMOST. II. (Hou+, 2023)J/MNRAS/524/4867 : CVs from SDSS (Inight+, 2023)J/A+A/669/A104 : Stellar parameters from Gaia DR3 (Kordopatis+, 2023)J/MNRAS/536/1057 : CVs from SDSS-V (Inight+, 2025)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/ApJS/282/26https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/ApJS/282/26http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/ApJS/282/26https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/ApJS/282/26https://vizier.iucaa.in/viz-bin/votable?-source=J/ApJS/282/26http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/ApJS/282/26GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/ApJS/282/26/table3 (Newly identified CVs from DESI DR1)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/ApJS/282/26/table3?https://vizier.iucaa.in/viz-bin/conesearch/J/ApJS/282/26/table3?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/ApJS/282/26/table3?GETtext/xml+votable180.050000true140.0466838933.945126940.0055555555555555566/160 548 623 669 695 698 733 751 763 902 2087 2096 2135 2139 2208-2209 2223 2243 2564 2611 2709 4104 4120 4127 4129 4149 4167 4231 4273 4294 4400 4619-4620 4626 4650 4655 4721 4740 4769 4782 4975 4990 4999 5062 5115 5359 5457 5558 5650 5864 5905 5929 5932 5960 5971 5982 6086 6093 6174 6193 6223 6227 6245 6253 6266 6271 6383 6433 6444 6510 6530 6588 6634 6985 6991 7037 7172 7342 7390 7465 7510 7546 7579 7589 7611 7974 8164 8209 8244 8267 8269 8296 8474 8552 8562 8569 8575 8596 8614 8804 8877 9021 9150 9165 9189 9219 9231 9267 9291 9301 9311 9340 9402 9419 9446 9477 9503-9504 9509 9527 9538 9562 9632 9672-9673 9723 9732 9770 9792 9820 9862 9867 9920 9923 10078 10150 10205 10228 10714 10721 10799 11072 11133 11176 11213 11230 11280 11317 11324 11633 11709 11895 11931 11940 12039 12289 12298 12305 12339 12346 12379 12499 12551 12627 12661 12765 13335 13337 13364 13374 13440 13468 14888 15022 15031 15034 15088 15095 15281 15291 15315 15346 15359 15914 15918 15982 16065 16302 16750 17205 17209 17497 17689 17723 17736 17767 17790 17836 17862 17895 17983 18045 18061 18192 18200 18237 18275 18354 18371 18391 18431 18759 18777 18799 19002 19012 19027 19070 19080 19128 19130 19156 19173 19194 19202 19217 19385 19455 19538 19574 19583 19585 19794-19795 19847 19851 19883 19937 19943 19945-19946 20034-20035 20128 20162 20167 20198 20296 20300 20328-20329 21862 21865 21877 21973 22355 22635 22647 22670 22771 22914 22949 23041 23056 23100 23210 24046 25566 25577 25703 25718 25843 25868 25909 25933 25944 25958 25964 26157 26161 26171 26207 26226 26282 26287 26316 26328 26395 26441-26442 26448 26731 26748 26818 26864 26916 26924 26979 26995 27004 27027 27115 27120 27151 27183 27196 27199 27204 27208 27223 27298 27309 27313 27386 27419 27426 27446 27475 27480 27498 27663 27690 27801 27975 28030 28118 28124 28127 28633 30022 30041 30046 30067-30068 30076 30970 30973 31150 31154 31166 31214 31331 31348 31418 31424 31441 31452 31464 31502 31517 31520 31527 31583 31642 31669 31679 31699 32262 32269 32273 32283 32301-32302 32314 32348 32354 32360 32375 32378-32379 32403 32409 32423 32440 32457 32493 32501 32547 32552 32645 32655 32687-32688 32692 32708 32717 32760 36221 36293 36308 36559 36670 36715 36719 36721 36743 40165 40797 40826 40861 40892 40904 40916 40935 40957 44001 45026 45030 45046 49004 49120 49129 49133 491411.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/ApJS/282/26?format=asciiOpticaldefaultJ/ApJS/282/26/table3Newly identified CVs from DESI DR1recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintIDDESI survey target identifiermeta.id;meta.mainOTypeCV subtype (1)src.classcharBp-Rp[-0.57/4.1]? Mean Gaia (Blue-Red) colormagphot.color;em.opt.B;em.opt.RfloatnullableDist[73/21721]? Distancepcpos.distanceintnullablee_Dist[0/13796]? Uncertainty in Distpcstat.error;pos.distanceintnullableE(B-V)[0/0.24]? The (B-V) color excess from 3D extinction mapmagphot.color.excessfloatnullableGMag[2.3/14.7]? Absolute Gaia G band magnitudemagphys.magAbs;em.optfloatnullablee_GMag[0.01/13.4]? Uncertainty in GMagmagstat.error;phys.magAbs;em.optfloatnullableGaiaDisplay data from Gaia DR3 (I/355)meta.ref.urlcharf_Name[p] p=Notable system detailed in Section 4.1; flag added by CDSmeta.codecharNameTarget name (JHHMM+DDMM)meta.idcharRAJ2000Right Ascension (J2000)degpos.eq.ra;meta.mainDEJ2000[-26/83.8] Declination (J2000)degpos.eq.dec;meta.mainPeriod[0.007/1.5]? Orbital perioddtime.perioddoublenullablef_PeriodFlag on Period (2)meta.code;time.periodcharGmag[12.2/21]? Mean Gaia DR3 G band magnitudemagphot.mag;em.optfloatnullablee_Gmag[0/0.1]? Uncertainty in Gmagmagstat.error;phot.mag;em.optfloatnullable