J/A+A/400/877ivo://CDS.VizieR/J/A+A/400/877doi:10.26093/cds/vizier.34000877CDSPauli E.-M.Napiwotzki R.Altmann M.Heber U.Odenkirchen M.Kerber F.2003-03-31T10:32:02Z2003-03-31T10:31:06ZCDS support team

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

cds-question@unistra.frwhite-dwarf-starsradial-velocityproper-motionsstellar-distanceWe present kinematics of a sample of 107 DA white dwarfs from the SPY project (ESO SN Ia Progenitor surveY) and discuss kinematic criteria for a distinction of thin disk, thick disk, and halo populations. This is the first homogeneous sample of white dwarfs for which 3D space motions have been determined. Since the percentage of old stars among white dwarfs is higher than among main-sequence stars, they are presumably valuable tools in studies of old populations such as the halo and the thick disk. Studies of white dwarf kinematics can help to determine the fraction of the total mass of our Galaxy contained in the form of thick disk and halo white dwarfs, an issue which is still under discussion. Radial velocities and spectroscopic distances obtained by the SPY project are combined with our measurements of proper motions to derive 3D space motions. Galactic orbits and further kinematic parameters are computed. We calculate individual errors of kinematic parameters by means of a Monte Carlo error propagation code. Our kinematic criteria for assigning population membership are deduced from a sample of F and G stars taken from the literature for which chemical criteria can be used to distinguish between thin disk, thick disk and halo. Candidates for thick disk and halo members are selected in a first step from the classical U-V-velocity diagram. Our final assignment of population membership is based on orbits and position in the J_z_-eccentricity diagram. We find four halo and twelve thick disk white dwarfs. We also present a systematic study of the effects of ignoring the radial velocity in kinematic investigations.2003A&A...400..877Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/400/877CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/378/556 : UVES/VLT spectra of white dwarfs (Koester+, 2001)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/400/877https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/400/877http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/400/877https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/400/877https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/400/877http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/400/877GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/400/877/table1 (Radial velocities, proper motions and spectral distributions)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/400/877/table1?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/400/877/table1?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/400/877/table1?GETtext/xml+votable180.050000true57.497083-44.60750.0055555555555555566/538 8250 8361 12553 16420 16510 16520 16584 16599 16614 16777 16910 16948 16988 17007 17020 17153 17170 17189 17451 17536 17846 17918 18086 18368 18410 18709 18902 19319 19979 21143 22846 23090 23105 24629 24748 24805 24809 25073 25162 25244 25360 25377 25400 25407 25744 25805 25822 25835 25855 25938 25962 26165 26189 26267 26282 26297 26471 26714 26932 26991 27218 27247 30190 30892 31274 31362 31375 31518 31677 33870 33955 33967 34310 34358 34405 35258 35626 35670 35692 35790 35806 35839 35879 36397 38389 40261 40273 40398 40402 40813 41157 41570 43991 44016 44218 44473 44516 44587 44771 44992 45225 45962 47011 48699 48781https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/400/877?format=asciiOpticaldefaultJ/A+A/400/877/table1Radial velocities, proper motions and spectral distributionsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.maincharprimaryNspectraNumber of spectrameta.numberintRVRadial velocitykm/sphys.veloc;pos.heliocentricfloate_RVError of radial velocitykm/sstat.errorfloatpmRAProper motion mu_alpha_*cos(delta)mas/yrpos.pm;pos.eq.rainte_pmRAError of mu_alpha_mas/yrstat.errorintpmDEProper motion mu_delta_mas/yrpos.pm;pos.eq.decinte_pmDEError of mu_delta_mas/yrstat.errorintDistSpSpectroscopic distancepcpos.distancefloatlog(Dist)log of distancelog(pc)pos.distancefloate_log(Dist)Error of log of distancelog(pc)stat.errorfloatKoestlerData from the J/A+A/378/556 papermeta.refchar_RAPosition (taken from Koester et al., Cat. J/A+A/378/556) (right ascension part)degpos.eq.ra;meta.main_DEPosition (taken from Koester et al., Cat. J/A+A/378/556) (declination part)degpos.eq.dec;meta.mainJ/A+A/400/877/table2Kinematic parameters of the white dwarfsrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameObject namemeta.id;meta.mainchareccEccentricity of galactic orbitsrc.orbital.eccentricityfloate_eccError of eccentricitystat.errorfloatJzz-component of angular momentumkpc.km/sphys.angMomentuminte_JzError of z-component of angular momentumkpc.km/sstat.errorintUvelU velocitykm/sphys.velocfloate_UvelError of Uvelkm/sstat.errorfloatVvelV velocitykm/sphys.velocfloate_VvelError of Vvelkm/sstat.errorfloatWvelW velocitykm/sphys.velocfloate_WvelError of Wvelkm/sstat.errorfloat