J/MNRAS/480/3942ivo://CDS.VizieR/J/MNRAS/480/3942doi:10.26093/cds/vizier.74803942CDSHollands M.A.Tremblay P.-E.Gansicke B.T.Gentile-Fusillo N.P.,Toonen S.2024-08-18T20:21:20Z2022-06-20T13:04:39ZCDS support team

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

cds-question@unistra.frhertzsprung-russell-diagramapparent-magnitudewhite-dwarf-starsUsing Gaia DR2 data, we present an up-to-date sample of white dwarfs within 20pc of the Sun. In total we identified 139 systems in Gaia DR2, nine of which are new detections, with the closest of these located at a distance of 13.05pc. We estimated atmospheric parameters for all stellar remnants based on the Gaia parallaxes and photometry. The high precision and completeness of the Gaia astrometry allowed us to search for wide binary companions. We re-identified all known binaries where both components have accurate DR2 astrometry, and established the binarity of one of the nine newly identified white dwarfs. No new companions were found to previously known 20pc white dwarfs. Finally, we estimated the local white dwarf space-density to be (4.49+/-0.38)x10^-3^pc^-3^, having given careful consideration to the distance-dependent Gaia completeness, which misses known objects at short distances, but is close to complete for white dwarfs near 20pc.2018MNRAS.480.3942Hhttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/MNRAS/480/3942CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toI/345 : Gaia DR2 (Gaia Collaboration, 2018)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/MNRAS/480/3942https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/MNRAS/480/3942http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/MNRAS/480/3942https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/MNRAS/480/3942https://vizier.iucaa.in/viz-bin/votable?-source=J/MNRAS/480/3942http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/MNRAS/480/3942GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/MNRAS/480/3942/table1 (Astrometric and photometric data for our Gaia 20pc white dwarf sample, as well as the results from our model atmosphere fits)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/480/3942/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/480/3942/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/480/3942/table1?GETtext/xml+votable180.050000true0.5482917-43.16833330.005555555555555556Cone search capability for table J/MNRAS/480/3942/table2 (White dwarfs previously thought to reside within 20pc that are now confirmed to be outside the 20pc sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/480/3942/table2?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/480/3942/table2?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/480/3942/table2?GETtext/xml+votable180.050000true1.977539.79194440.005555555555555556Cone search capability for table J/MNRAS/480/3942/table5 (Wide binaries identified in our 20pc white dwarf sample)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/MNRAS/480/3942/table5?https://vizier.iucaa.in/viz-bin/conesearch/J/MNRAS/480/3942/table5?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/MNRAS/480/3942/table5?GETtext/xml+votable180.050000true27.965333364.43038890.0055555555555555566/319 448 1077 1628 2183 2364 2366 2497 2536 2722 2736 2808 3122 3222 3345 3682 4375 4566 5050 5065 5261 6132 6328 6458 6619 6705 7252 7267 7478 7519 7652 7740 7817 8480 8654 8894 9050 9458 9985 10131 10169 10173 11131 11193 11645 12157 12268 12362 12738 13013 13103 13295 13391 13550 14187 14391 14586 15280 15335 15462 15552 15620 15651 16078 16158 16433 16440 16697 17020 17181 17331 17625 17666 17685 17733 18133 18139 18415 18556 18902 18953 19042 19488 19655 19987 20155 20371 20404 20940 21194 21396 21479 22149 22214 22345 22638 22870 23174 23235 23457 23497 23619 24366 24713 24795 24912 25250 25255 25712 25792 26299 26321 26396 26471 26740 26916 28559 29182 29194 29505 29777 29855 30093 30195 30415 30509 30694 31179 31518 31549 31637 31677 31735 31862 31956 32436 33015 33243 33322 33384 34026 34959 35315 35412 35490 35790 36416 36567 37125 37464 37473 37477 37523 37815 37890 38188 38211 39397 39421 39535 39602 39709 39807 40070 40283 40623 40747 40959 41125 41638 41693 42070 42700 42760 43239 43537 43805 44639 45110 45173 45177 45386 45649 45782 46031 46598 46709 46841 47957 48296 48358 48728 491251.9867573869263685e-19 3.916500758235022e-19https://cdsarc.cds.unistra.fr/viz-bin/moc/J/MNRAS/480/3942?format=asciidefaultJ/MNRAS/480/3942/table1Astrometric and photometric data for our Gaia 20pc white dwarf sample, as well as the results from our model atmosphere fits_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSBarycentric right ascension (ICRS) at Ep=2015.5pos.eq.ra;meta.mainDE_ICRSBarycentric declination (ICRS) at Ep=2015.5pos.eq.dec;meta.mainWDName? White Dwarf Name (WD HHMM+DDd.N)meta.idcharGaiaDR2Gaia DR2 IDmeta.id;meta.mainplxParallax (1)maspos.parallax.trigfloate_plxError on plx (1)masstat.error;pos.parallaxfloatpmRAProper motion in Right Ascension (pmRA*cosDE)mas/yrpos.pm;pos.eq.radoublee_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decdoublee_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatGmagGaia G-band mean magnitudemagphot.mag;em.optfloate_GmagError on Gmagmagstat.error;phot.magfloatBPmagGaia Integrated BP mean magnitudemagphot.mag;em.opt.Bfloate_BPmagError on BPmagmagstat.error;phot.magfloatRPmagGaia Integrated RP mean magnitudemagphot.mag;em.opt.Rfloate_RPmagError on RPmagmagstat.error;phot.magfloatSpType? Spectral typesrc.spTypecharcomp? Adopted atmospheric composition used for our fits to the Gaia photometry and parallaxesmeta.notecharTeff? Effective temperatureKphys.temperature.effectiveintnullablee_Teff? Error on TeffKstat.error;phys.temperature.effectiveintnullablelogg? Surface gravitylog(cm.s**-2)phys.gravityfloatnullablee_logg? Error on logglog(cm.s**-2)stat.errorfloatnullableNote? Note (2)meta.notecharJ/MNRAS/480/3942/table2White dwarfs previously thought to reside within 20pc that are now confirmed to be outside the 20pc sample_RA.icrsRight ascension (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2015.5 (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services)pos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharWDNameWhite Dwarf Name (WD HHMM+DDd.N)meta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSBarycentric right ascension (ICRS) at Ep=2015.5pos.eq.ra;meta.mainDE_ICRSBarycentric declination (ICRS) at Ep=2015.5pos.eq.dec;meta.mainGaiaDR2Gaia DR2 IDmeta.id;meta.mainplxParallax (1)maspos.parallax.trigfloate_plxError on plx (1)masstat.error;pos.parallaxfloatDistDistance to the source (1)pcpos.distancefloate_DistError on Distpcstat.errorfloatplxold? Previous parallax estimatemaspos.parallax.trigfloatnullablee_plxold? Error on plxoldmasstat.errorfloatnullableDistoldPrevious distance estimatepcpos.distancefloate_Distold? Error on plxoldpcstat.errorfloatnullabler_DistoldSource of the previous parallax/distance estimate (2)meta.ref;pos.frameintJ/MNRAS/480/3942/table3Rejected white dwarf candidates from our selection of 20pc sourcesSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintGaiaDR2Gaia DR2 IDmeta.id;meta.mainplxParallaxmaspos.parallax.trigfloate_plxError on plxmasstat.error;pos.parallaxfloatpmRAProper motion in Right Ascension (pmRA*cosDE)mas/yrpos.pm;pos.eq.rafloate_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decfloate_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatAEMAstrometric excess noisemasstat.fit.paramfloatTeffEffective temperature (1)Kphys.temperature.effectiveinte_TeffError on Teff (1)Kstat.error;phys.temperature.effectiveintloggSurface gravity (1)log(cm.s**-2)phys.gravityfloate_loggError on logg (1)log(cm.s**-2)stat.errorfloatn_GaiaDR2Note on the rejected white dwarf candidates (2)meta.noteintJ/MNRAS/480/3942/table4Known white dwarfs within 20pc and potential 20pc members without reliable five-parameter astrometric solutionsSimbadNameSimbad column added by the CDSmeta.idcharnullablerecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintWDNameWhite Dwarf Name (WD HHMM+DDd.N)meta.idcharAltNameAlternative namemeta.idcharGaiaDR2? Gaia DR2 IDmeta.id;meta.mainnullableplx? Parallaxmaspos.parallax.trigfloatnullablee_plx? Error on plxmasstat.error;pos.parallaxfloatnullableDistDistance to the sourcepcpos.distancefloate_DistError on Distpcstat.errorfloatr_DistReference of the quoted distance or parallax (1)meta.ref;pos.frameintn_GaiaDR2? Notes on the reliability of the five-parameter astrometric solution (2)meta.notecharJ/MNRAS/480/3942/table5Wide binaries identified in our 20pc white dwarf sample_RA.icrsRight ascension (ICRS) at Epoch=J2000, proper motions taken into accountpos.eq.ranullableindexed_DE.icrsDeclination (ICRS) at Epoch=J2000, proper motions taken into accountpos.eq.decnullableindexedSimbadSimbad column added by the CDSmeta.ref.urlcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRA_ICRSBarycentric right ascension (ICRS) at Ep=2015.5pos.eq.ra;meta.mainDE_ICRSBarycentric declination (ICRS) at Ep=2015.5pos.eq.dec;meta.mainGaiaDR2Gaia DR2 IDmeta.id;meta.mainplxParallaxmaspos.parallax.trigfloate_plxError on plxmasstat.error;pos.parallaxfloatpmRAProper motion in Right Ascension (pmRA*cosDE)mas/yrpos.pm;pos.eq.radoublee_pmRAError on pmRAmas/yrstat.error;pos.pm;pos.eq.rafloatpmDEProper motion in Declinationmas/yrpos.pm;pos.eq.decdoublee_pmDEError on pmDEmas/yrstat.error;pos.pm;pos.eq.decfloatGMAGG-band absolute magnitudemagphys.magAbsfloate_GMAGError on GMAGmagstat.errorfloatBP-RPGaia BP-RP colour indexmagphot.color;em.opt.B;em.opt.Rfloate_BP-RPError on BP-RPmagstat.errorfloatDt? Projected separationAUpos.angDistance;src.orbitaldoublenullablee_Dt? Error on DtAUstat.errorfloatnullableDeltavt? Tangential velocity difference (1)km/sphys.veloc.transversefloatnullablee_Deltavt? Error on Deltavtkm/sstat.errorfloatnullablen_GaiaDR2? Notes on the source (2)meta.noteintnullable