J/AJ/145/136ivo://CDS.VizieR/J/AJ/145/136doi:10.26093/cds/vizier.51450136CDSLimoges M.-M.Lepine S.Bergeron P.2017-06-12T08:25:27Z2014-06-23T11:46:00ZCDS support team

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

cds-question@unistra.frwhite-dwarf-starsstellar-distancevisible-astronomysloan-photometryinfrared-photometryproper-motionsstellar-spectral-typesstellar-masseseffective-temperatureWe present the preliminary results of a survey aimed at significantly increasing the range and completeness of the local census of spectroscopically confirmed white dwarfs. The current census of nearby white dwarfs is reasonably complete only to about 20pc of the Sun, a volume that includes around 130 white dwarfs, a sample too small for detailed statistical analyses. This census is largely based on follow-up investigations of stars with very large proper motions. We describe here the basis of a method that will lead to a catalog of white dwarfs within 40pc of the Sun and north of the celestial equator, thus increasing by a factor of eight the extent of the northern sky census. White dwarf candidates are identified from the SUPERBLINK proper motion database, allowing us to investigate stars down to a proper motion limit {mu}>40mas/yr, while minimizing the kinematic bias for nearby objects. The selection criteria and distance estimates are based on a combination of color-magnitude and reduced proper motion diagrams. Our follow-up spectroscopic observation campaign has so far uncovered 193 new white dwarfs, among which we identify 127 DA (including 9 DA+dM and 4 magnetic), 1 DB, 56 DC, 3 DQ, and 6 DZ stars. We perform a spectroscopic analysis on a subsample of 84 DAs, and provide their atmospheric parameters. In particular, we identify 11 new white dwarfs with spectroscopic distances within 25pc of the Sun, including five candidates to the D<20pc subset.2013AJ....145..136Lhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/AJ/145/136CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toIII/235 : Spectroscopically Identified White Dwarfs (McCook+, 2008)I/311 : Hipparcos, the New Reduction (van Leeuwen, 2007)I/298 : LSPM-North Catalog (Lepine+ 2005)I/284 : The USNO-B1.0 Catalog (Monet+ 2003)II/246 : 2MASS All-Sky Catalog of Point Sources (Cutri+ 2003)I/259 : The Tycho-2 Catalogue (Hog+ 2000)I/98 : NLTT Catalogue (Luyten, 1979)J/ApJS/219/19 : Census of nearby white dwarfs from SUPERBLINK (Limoges+, 2015)J/ApJS/204/5 : SDSS DR7 white dwarf catalog (Kleinman+, 2013)J/ApJ/730/128 : Spectroscopy of DA WD from the SDSS-DR4 (Tremblay+, 2011)J/ApJS/190/77 : Detailed analysis of cool WDs in the SDSS (Kilic+, 2010)J/AJ/138/1681 : WD within 20pc of the Sun (Sion+, 2009)J/AJ/135/1225 : Parameters of the local white dwarfs (Holberg+, 2008)J/ApJS/173/185 : GALEX ultraviolet atlas of nearby galaxies (Gil de Paz+, 2007)J/AJ/134/252 : New nearby white dwarf systems (Subasavage+, 2007)J/ApJS/167/40 : SDSS4 confirmed white dwarfs catalog (Eisenstein+, 2006)J/ApJ/643/402 : Cool white dwarfs in the solar neighborhood (Kawka+, 2006)J/AJ/132/1221 : VJHK and SDSS photometry of DA white dwarfs (Holberg+, 2006)J/AJ/131/582 : Cool white dwarfs in the SDSS (Kilic+, 2006)J/ApJ/631/1100 : Atmospheric parameters of DA white dwarfs (Gianninas+, 2005)J/ApJS/156/47 : DA white dwarfs from the Palomar Green Survey (Liebert+, 2005)J/ApJ/607/426 : Catalog of white dwarfs in SDSS-DR1 (Kleinman+, 2004)J/ApJ/582/1011 : Revised NLTT Catalog (Salim+, 2003)J/ApJ/571/512 : Distances of white dwarf stars (Holberg+, 2002)J/AJ/124/1190 : Northern high proper motion stars in DSS (Lepine+, 2002)J/ApJS/133/413 : BVRIJHK photometry of cool white dwarfs (Bergeron+, 2001)http://www.astro.umontreal.ca/~bergeron/CoolingModels : Synthetic colors andhttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/AJ/145/136https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/AJ/145/136http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/AJ/145/136https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/AJ/145/136https://vizier.iucaa.in/viz-bin/votable?-source=J/AJ/145/136http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/AJ/145/136GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/AJ/145/136/stars (Astrometry and photometry of spectroscopically confirmed white dwarfs from SUPERBLINK)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/AJ/145/136/stars?https://vizier.iucaa.in/viz-bin/conesearch/J/AJ/145/136/stars?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/AJ/145/136/stars?GETtext/xml+votable180.050000true0.594208363.96230560.0055555555555555566/442 446 448 471 579 622 632 657 776 992 1085 1088 1131 1414 1478 1511 1666 1731 1782 1824 1833 1898 1910 2138 2148 2263 2273 2393 2490 2615 2633 2722 2776 3027 3066 3122 3250 3393 3424 3499 3709 3987 4262 4337 4346 4379 4440 4504 4523 4545 4659 4668 4718 4829 4864 4869 4977 5057 5106 5519 5589 6131 6216 6771 7122 7248 7816 7817 8333 8393 8533 8607 8805 9035 9050 9129 9288 9865 9940 9957 10119 10208 10266 10333 10662 10689 10780 10978 11226 11465 11521 11843 11973 12126 12343 12362 12692 12750 13361 13478 13504 13525 13584 13586 13726 13923 13945 14163 14187 14282 14488 15087 15209 15552 15620 15835 15890 15901 15991 16356 18155 18805 18929 19119 19135 19160 19198 19219 19415 19454 19488 19637 19948 20081 20149 20291 20386 21935 22308 22392 22492 22501 23320 23658 23688 23835 23863 24032 24317 24561 26059 26076 26358 26415 26483 26516 26602 26965 26993 27500 27587 27648 27744 27918 27966 28049 28198 28207 28271 28349 28452 28532 28535 30539 30566 30697 31098 31193 31203 31434 31446 31532 31549 31580 31762 31979 32108 32142 32173 32552 326588.650015785639275e-20 1.4134638842407062e-18https://cdsarc.cds.unistra.fr/viz-bin/moc/J/AJ/145/136?format=asciiOpticalInfrareddefaultJ/AJ/145/136/starsAstrometry and photometry of spectroscopically confirmed white dwarfs from SUPERBLINKrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameThe PM I identifier (HHMMS+DDMMW) (G1)meta.idcharprimaryASimbad column added by the CDSmeta.ref.urlcharn_Name[n] n: Note on PM J02237+2055 (1)meta.notecharNLTT? NLTT catalog (cat. I/98) recno identificationmeta.idintnullableSDSSThe SDSS identifier (JHHMMSS.ss+DDMMs)meta.id;meta.maincharSDSS9Display the SDSS-DR9 photometric data (cat. V/139) within 5"meta.ref.urlcharRAJ2000Hour of Right Ascension (J2000)pos.eq.ra;meta.mainDEJ2000Degree of Declination (J2000)pos.eq.dec;meta.mainpmTotal proper motionarcsec/yrpos.pmfloatpmRAProper motion along Right Ascensionarcsec/yrpos.pm;pos.eq.rafloatpmDEProper motion along Declinationarcsec/yrpos.pm;pos.eq.decfloatNoteAdditional reference(s) (1-5) (2)meta.notecharFUV? GALEX FUV band magnitudemagphot.mag;em.UV.100-200nmfloatnullableNUV? GALEX NUV band magnitudemagphot.mag;em.UVfloatnullableBmag? USNO-B1.0 B_F_ photographic magnitude (2)magphot.mag;em.opt.BfloatnullableRmag? USNO-B1.0 R_I_ photographic magnitude (2)magphot.mag;em.opt.RfloatnullableImag? USNO-B1.0 I_N_ photographic magnitude (2)magphot.mag;em.opt.IfloatnullableJmag? 2MASS J band magnitude (from cat. II/246)magphot.mag;em.IR.JfloatnullableHmag? 2MASS H band magnitude (from cat. II/246)magphot.mag;em.IR.HfloatnullableKmag? 2MASS Ks band magnitude (from cat. II/246)magphot.mag;em.IR.Kfloatnullableumag? SDSS u band magnitudemagphot.mag;em.opt.Ufloatnullablegmag? SDSS g band magnitudemagphot.mag;em.opt.Bfloatnullablermag? SDSS r band magnitudemagphot.mag;em.opt.Rfloatnullableimag? SDSS i band magnitudemagphot.mag;em.opt.Ifloatnullablezmag? SDSS z band magnitudemagphot.mag;em.opt.IfloatnullableDphPhotometric distancepcpos.distance;pos.heliocentricfloatSpTAdopted spectral type (3)src.spTypecharn_SpTNote about SpT (1-5) (4)meta.notecharUSNOCross-match with the USNO-B1.0 catalog (Monet et al., 2003, cat. I/284) within 1.5"meta.ref.urlintnullable2MDisplay the 2MASS data (Cutri et al. 2003, Cat. II/246)meta.ref.urlcharSimbadSimbad column added by the CDSmeta.ref.urlcharJ/AJ/145/136/table5Atmospheric parameters of DA white dwarfs from SUPERBLINKrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameThe PM I identifier (HHMMS+DDMMW) (G1)meta.idcharTeffEffective temperatureKphys.temperature.effectiveinte_TeffUncertainty in TeffKstat.error;phys.temperature.effectiveintloggLog of surface gravitylog(cm.s**-2)phys.gravityfloate_loggUncertainty in logglog(cm.s**-2)stat.errorfloatMassStellar mass relative to the SunsolMassphys.massfloate_MassUncertainty in MasssolMassstat.error;phys.massfloatVMagAbsolute visual magnitudemagphys.magAbs;em.opt.VfloatlogLLog of stellar luminosity relative to the Sunlog(solLum)phys.luminosityfloatVmagEstimated visual magnitudemagphot.mag;em.opt.Vfloate_DspUncertainty in Dsppcstat.errorfloatlogtLog of white dwarf cooling time (log{tau})log(yr)time.agefloatNote? Additional note (1)meta.noteintnullableSimbadSimbad column added by the CDSmeta.ref.urlcharDspSpectroscopic distancepcpos.distance;pos.heliocentricfloat