J/MNRAS/462/2295ivo://CDS.VizieR/J/MNRAS/462/2295doi:10.26093/cds/vizier.74622295CDSHolberg J.B.Oswalt T.D.Sion E.M.McCook G.P.2024-08-16T20:18:18Z2018-03-22T15:32:40ZCDS support team

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

cds-question@unistra.frwhite-dwarf-starsinfrared-photometryvisible-astronomybroad-band-photometrystellar-massesstellar-distanceWe have extended our detailed survey of the local white dwarf population from 20 to 25pc, effectively doubling the sample volume, which now includes 232 stars. In the process, new stars within 20 pc have been added, a more uniform set of distance estimates as well as improved spectral and binary classifications are available. The present 25pc sample is estimated to be about 68 per cent complete (the corresponding 20pc sample is now 86 per cent complete). The space density of white dwarfs is unchanged at 4.8+/-0.5x10^-3^pc^-3^. This new study includes a white dwarf mass distribution and luminosity function based on the 232 stars in the 25pc sample. We find a significant excess of single stars over systems containing one or more companions (74 per cent versus 26 per cent). This suggests mechanisms that result in the loss of companions during binary system evolution. In addition, this updated sample exhibits a pronounced deficiency of nearby 'Sirius-like' systems. 11 such systems were found within the 20pc volume versus only one additional system found in the volume between 20 and 25pc. An estimate of white dwarf birth rates during the last ~8Gyr is derived from individual remnant cooling ages. A discussion of likely ways new members of the local sample may be found is provided.2016MNRAS.462.2295Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/462/2295CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toB/wd : Spectroscopically identified white dwarfs (McCook+, 2014)I/238 : Yale Trigonometric Parallaxes, Fourth Edition (van Altena+ 1995)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/462/2295https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/462/2295http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/462/2295https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/462/2295https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/462/2295http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/462/2295GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/462/2295/table1 (25pc White Dwarf sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/462/2295/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/462/2295/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/462/2295/table1?GETtext/xml+votable180.050000true0.667-34.22741670.0055555555555555566/319 448 897 1077 1381 1628 2183 2263 2364 2366 2497 2536 2722 2733 2808 2973 3122 3222 3345 3393 3682 3804 4375 4566 5050 5065 5261 6328 6436 6576 6619 6705 6721 6934 7252 7267 7478 7519 7652 7740 7817 8480 8894 9006 9050 9458 9651 9985 10131 10169 10173 10699 11131 11193 11645 11784 11984 12157 12268 12362 12738 13013 13103 13263 13295 13391 13904 14187 14391 14586 15209 15280 15335 15462 15552 15620 16078 16158 16433 16440 16697 17181 17331 17568 17625 17733 17879 17967 18133 18139 18155 18415 18556 18700 18902 19042 19135 19141 19198 19265 19488 19987 20155 20371 20404 20940 21194 21479 21691 22149 22214 22300 22345 22638 22709 22870 23036 23174 23235 23333 23457 23497 23591 23619 24366 24713 24778 24795 25250 25255 25712 25792 26321 26386 26396 26471 26740 26916 27744 28271 28559 29777 29855 30093 30195 30415 30694 30697 31179 31549 31637 31677 31735 31956 31973 32436 33015 33198 33243 33322 33384 34026 34586 34756 35059 35079 35412 35490 35790 35957 36416 36567 37464 37473 37477 37523 37890 38188 38211 39421 39534-39535 39602 39709 39807 40070 40283 40623 40747 41017 41099 41109 41125 41638 42700 42760 43239 43537 43805 44639 45110 45173 45177 45201 45386 45649 45701 45782 46598 46709 46777 46841 47148 47476 47957 48358 48621 48728 491257.952274030004205e-20 6.118840631666147e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/462/2295?format=asciiOpticalInfrareddefaultJ/MNRAS/462/2295/table125pc White Dwarf sampleSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDThe MS99 (Cat. B/wd) white dwarf number (G1)meta.id;meta.maincharm_WDMultiplicity index on WDmeta.code.multipcharONameAlternate IDmeta.idcharSpTypeThe WD spectral type (2)src.spTypecharVmagMeasured or computed V magnitude (3)magphot.mag;em.opt.Vfloatplx? Observed trigonometric parallax (4)maspos.parallax.trigfloatnullablee_plx? rms uncertainty on plxmasstat.error;pos.parallaxfloatnullabler_plx? Parallax reference (5)meta.ref;pos.frameintnullableSystem[sbml dd] System (6)pos.framecharNNumber of WDs in system.meta.numberintNote[a] a = stars discussed in the Appendix Ameta.notechar_RAPosition from Simbad (right ascension part)degpos.eq.ra;meta.mainnullable_DEPosition from Simbad (declination part)degpos.eq.dec;meta.mainnullableJ/MNRAS/462/2295/table2UBVRI + JHK photometry and uncertaintiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDThe MS99 (Cat. B/wd) white dwarf number (G1)meta.id;meta.maincharm_WDMultiplicity index on WDmeta.code.multipcharUmag? U magnitudemagphot.mag;em.opt.Ufloatnullablee_Umag? rms uncertainty on U magnitudemagstat.error;phot.mag;em.opt.UfloatnullableBmag? B magnitudemagphot.mag;em.opt.Bfloatnullablee_Bmag? rms uncertainty on B magnitudemagstat.error;phot.mag;em.opt.BfloatnullableVmag? V magnitudemagphot.mag;em.opt.Vfloatnullablee_Vmag? rms uncertainty on V magnitudemagstat.error;phot.mag;em.opt.VfloatnullableRmag? R magnitudemagphot.mag;em.opt.Rfloatnullablee_Rmag? rms uncertainty on R magnitudemagstat.error;phot.mag;em.opt.RfloatnullableImag? I magnitudemagphot.mag;em.opt.Ifloatnullablee_Imag? rms uncertainty on I magnitudemagstat.error;phot.mag;em.opt.IfloatnullableJmag? J magnitudemagphot.mag;em.IR.Jfloatnullablee_Jmag? rms uncertainty on J magnitudemagstat.error;phot.mag;em.IR.JfloatnullableHmag? H magnitudemagphot.mag;em.IR.Hfloatnullablee_Hmag? rms uncertainty on H magnitudemagstat.error;phot.mag;em.IR.HfloatnullableKmag? K magnitudemagphot.mag;em.IR.Kfloatnullablee_Kmag? rms uncertainty on K magnitudemagstat.error;phot.mag;em.IR.KfloatnullableJ/MNRAS/462/2295/table3Physical propertiesrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDThe MS99 (Cat. B/wd) white dwarf number (G1)meta.id;meta.maincharm_WDMultiplicity index on WDmeta.code.multipcharTeffAdopted effective temperatureKphys.temperature.effectiveinte_Teffrms uncertainty on TeffKstat.error;phys.temperature.effectiveintloggAdopted log surface gravitylog(cm.s**-2)phys.gravityfloate_loggrms uncertainty on logglog(cm.s**-2)stat.errorfloatCompPhotospheric compositionmeta.codecharMassEstimated masssolMassphys.massfloate_Massrms uncertainty on MasssolMassstat.error;phys.massfloatDistDistancepcpos.distance;pos.heliocentricfloate_Distrms uncertainty on Distpcstat.errorfloatMeth[ps] Method by which distance was determined (p = parallax and s = spectroscopic)meta.notecharmbolEstimated bolometric magnitudemagphot.mag.bolfloatAgeEstimated cooling ageGyrtime.agefloat