J/AJ/126/1023ivo://CDS.VizieR/J/AJ/126/1023doi:10.26093/cds/vizier.51261023CDSHarris H.C.Liebert J.Kleinman S.J.Nitta A.Anderson S.F.Knapp G.R.,Krzesinski J.Schmidt G.STrauss M.A.Vanden Berk D.Eisenstein D.,Hawley S.Margon B.Munn J.A.Silvestri N.M.Smith J.A.Szkody P.,Collinge M.J.Dahn C.C.Fan X.Hall P.B.Schneider D.P.Brinkmann J.,Burles S.Gunn J.E.Hennessy G.S.Hindsley R.Ivezic Z.Kent S.,Lamb D.Q.Lupton R.H.Nichol R.C.Pier J.R.Schlegel D.J.Subbarao M.,Uomoto A.Yanny B.York D.G.2023-04-06T16:50:56Z2004-08-02T22:12:45ZCDS support team

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

cds-question@unistra.frwhite-dwarf-starsAn initial assessment is made of white dwarf and hot subdwarf stars observed in the Sloan Digital Sky Survey. In a small area of sky (190 square degrees), observed much like the full survey will be, 269 white dwarfs (WDs) and 56 hot subdwarfs are identified spectroscopically where only 44 white dwarfs and five hot subdwarfs were known previously. Most are ordinary DA (hydrogen atmosphere) and DB (helium) types. In addition, in the full survey to date, a number of WDs have been found with uncommon spectral types. Among these are blue DQ stars displaying lines of atomic carbon; red DQ stars showing molecular bands of C2 with a wide variety of strengths; DZ stars where Ca and occasionally Mg, Na, and/or Fe lines are detected; and magnetic WDs with a wide range of magnetic field strengths in DA, DB, DQ, and (probably) DZ spectral types. Photometry alone allows identification of stars hotter than 12000K, and the density of these stars for magnitude g 15<g<20 is found to be ~2.2deg^-2^ at Galactic latitudes of 29{deg}-62{deg}. Spectra are obtained for roughly half of these hot stars. The spectra show that for 15<g<17, 40% of hot stars are WDs, and the fraction of WDs rises to ~90% at g=20. The remainder are hot sdB and sdO stars.2003AJ....126.1023Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/126/1023CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/AJ/123/3409 : SDSS M, L, and T dwarfs (Hawley+, 2002)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/126/1023https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/126/1023http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/126/1023https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/126/1023https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/126/1023http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/126/1023GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/126/1023/wd (White dwarfs (tables 1 to 3))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/126/1023/wd?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/126/1023/wd?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/126/1023/wd?GETtext/xml+votable180.050000true145.281125-0.33050.0055555555555555565/6485-6486 6746 7786 7833-7834 6/554 5956 6485 6606 7250 7262 7372 7457 8192-8194 10085 10095 10104 11254 11593 11836 11838 11840 11880 17229 17811 17819 18087 18301 18375 18385 18627 18750 18795 19415 23049 23187 23196 23208 23232 25855 25917-25919 25933 25935 25937-25939 25949-25950 25955-25956 25958-25962 25964-25966 25968-25970 25997-25999 26005-26008 26010-26012 26017-26020 26022 26024-26026 26028 26030 26032-26033 26049 26173 26175 26198-26199 26201 26206 26209-26210 26212 26214-26217 26219-26222 26260 26263 26276 26304-26305 26368-26369 26943 26956 26958-26960 26962-26963 26966 26969-26973 26978-26981 26988 26992 26994 27028-27029 27048 27075 27199 27230 27233-27234 27236 27239 27242-27243 27248 27285 27287 27292 27321 27329-27330 27332 27336 27656 31138 31150 31293 31295 31311 31315 31319 31321-31324 31326 31331 31340-31342 31345-31346 31374-31375 31379-31381 31386-31390 31397 31401-31405 31408 31424-31425 31438 31442 36729 45053-45055 49077 490983.588997330618193e-19 4.653515163505597e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/126/1023?format=asciiOpticaldefaultJ/AJ/126/1023/wdWhite dwarfs (tables 1 to 3)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Hour of right ascension (J2000) (1)pos.eq.ra;meta.mainDEJ2000Degree of declination (J2000) (1)pos.eq.dec;meta.maingmagSDSS g-band magnitudemagphot.mag;em.opt.Bfloatu-g? The SDSS (u-g) colormagphot.color;em.opt.U;em.opt.Bfloatnullableg-rThe SDSS (g-r) colormagphot.color;em.opt.B;em.opt.Rfloatr-iThe SDSS (r-i) colormagphot.color;em.opt.R;em.opt.Ifloati-zThe SDSS (i-z) colormagphot.colorfloatAuFull SDSS u-band interstellar absorption (2)magphys.absorptionfloatl_pm[<~] Limit or approximate flag on PMmeta.code.errorcharpmTotal proper motion (3)mas/yrpos.pmintpmPA? Position angle of the proper motiondegpos.posAng;pos.pmintnullableSpTypeSpectral type (4)src.spTypecharNoteIndividual notes, detailed in file notes.datmeta.notecharJ/AJ/126/1023/notesNotes on tables 1, 2, 3recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNoteNote number (1-24 in table 1, 30-47 in table2, 46- 51 in table3)meta.noteintTextText of the notemeta.notechar