J/A+A/447/173ivo://CDS.VizieR/J/A+A/447/173doi:10.26093/cds/vizier.34470173CDSPauli E.-M.Napiwotzki R.Heber U.,M.altmannOdenkirchen M.2017-07-10T06:21:47Z2014-02-19T06:48:24ZCDS 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 the kinematics of a sample of 398 DA white dwarfs from the SPY project (ESO SN Ia Progenitor surveY) and discuss kinematic criteria for distinguishing of thin-disk, thick-disk, and halo populations. This is the largest 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 were combined with our measurements of proper motions to derive 3D space motions. Galactic orbits and further kinematic parameters were computed. We calculated individual errors of kinematic parameters by means of a Monte Carlo error propagation code. Our kinematic criteria for assigning population membership were deduced from a sample of F and G stars taken from the literature, for which chemical criteria can be used to distinguish between a thin-disk, a thick-disk and a halo star. Our kinematic population classification scheme is based on the position in the U-V-velocity diagram, the position in the J_z_-eccentricity diagram, and the Galactic orbit. We combined this with age information and found seven halo and 23 thick-disk white dwarfs in this brightness limited sample. Another four rather cool white dwarfs probably also belong to the thick disk. Correspondingly 2% of the white dwarfs belong to the halo and 7% to the thick disk. The mass contribution of the thick-disk white dwarfs is found to be substantial, but is insufficient to account for the missing dark matter.2006A&A...447..173Phttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/447/173CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicerelated-toJ/A+A/400/877 : 3D kinematics of white dwarfs from SPY project (Pauli+, 2003)https://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/447/173https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/447/173http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/447/173https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/447/173https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/447/173http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/447/173GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/447/173/WDs (Distances, motions and kinematics of the 398 SPY white dwarfs)https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/447/173/WDs?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/447/173/WDs?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/447/173/WDs?GETtext/xml+votable180.050000true192.9210625-28.1131250.0055555555555555566/7 87 95 100 233 238 269 279 419 421 436 480 528 651 696 4178 4319 4337 4369 4458 4566 4692 4825 8199 8230 8250 8270 8361 8382 8475 8595 8718 8725 8727 8761 8965 12349 12373 12380 12438 12541 12553 12596 12616 12746-12747 12900-12901 13321 13327 13352 16420 16422 16438 16451 16467 16510 16520 16584 16599 16614 16650 16759 16764 16777 16799 16857 16910 16948 16988 17007 17013 17020 17153 17170 17189 17280 17352 17451 17534 17536 17577 17626 17685 17699 17748 17753 17772 17846 17879 17918 17971 18079 18086 18133 18246 18368-18369 18410 18443 18486 18548 18560 18657 18709 18849 18859 18902 18911 18931 19023 19122 19251 19319 19340 19408 19587 19629 19681 19819 19975 19979 20001 20009 20078 20198 20738 21031 21035 21143 22533 22591 22675 22757 22846 22870 23013 23048 23090 23105 23180 23260 23268 23428 23466 23468 23495 23516 23789 23795 23804 23924 23947 24629 24659 24688 24727 24748 24795 24805 24809 24836 25034 25068 25073 25162 25244 25276 25360 25371 25377 25400 25407 25480 25607 25613 25744 25781 25792 25805 25822 25855 25879 25938 25943 25962 26108 26145 26165 26168 26189 26221 26224 26235 26267 26282 26297 26302 26326 26381 26464 26471 26714 26911 26916 26932 26991 27067 27078 27209 27218 27236 27247 27350 27381 27395 27426 27429 27432 27469 27490 27536 27561 27594-27595 27631 27652 27876 27884 27934 28002 28110 28183 28243 29522 29723 30190 30251 30415 30621 30650 30694 30696 30767 30892 31172 31282 31290 31362 31375 31407 31451 31470 31518 31520 31528 31597 31599 31602 31612 31647 31677 31690 31714 31726 31872 32436 33011 33015 33514 33639 33686 33870 33955 33959 33967 34310 34347 34358 34405 34625 34676 34815 34975 35093 35105 35222 35246 35258 35274 35300 35490 35565 35626 35670 35692 35718 35721 35769 35790 35796 35806 35839 35879 35924 35978 36063 36081 36092 36120 36123 36154 36208 36230 36238 36366 36370 36397 36403 36415 36469 36489 36589 36727 36858 37427 38036 38389 38747 39336 40070 40261 40273 40398 40402 40788 40813 41157 41570 42701 43130 43537 43928 43930 43991 44002 44016 44020 44218 44473 44516 44569 44587 44611 44771 44806 44898 44905 44971 44992 45225 45437 45632 45649 45782 45802 45909 45962 46180 46285 46331 46385 46403 46405 46431 46721 46743 46795 47011 47047 47050 48378 48516 48578 48621 48670 48699 48781 48863https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/447/173?format=asciiOpticaldefaultJ/A+A/447/173/WDsDistances, motions and kinematics of the 398 SPY white dwarfsSimbadNameSimbad column added by the CDSmeta.idcharrecnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintNameStar namemeta.id;meta.maincharRVRadial velocity, corrected for gravitational redshiftkm/sphys.veloc;pos.heliocentricfloate_RVrms uncertainty on RVkm/sstat.errorfloatn_RV[*] *: stars with only one spectrummeta.notecharpmRAProper motion, mu_alpha_*cos(delta)mas/yrpos.pm;pos.eq.rainte_pmRArms uncertainty on pmRAmas/yrstat.error;pos.pm;pos.eq.raintpmDEProper motion, mu_delta_mas/yrpos.pm;pos.eq.decinte_pmDErms uncertainty on pmDEmas/yrstat.error;pos.pm;pos.eq.decintDistSpectroscopic distancepcpos.distance;pos.heliocentricfloatlogDistLog of the distancelog(pc)pos.distance;pos.heliocentricfloate_logDistrms uncertainty on logDistlog(pc)stat.errorfloateccExcentricity of Galactic orbitsrc.orbital.eccentricityfloate_eccrms uncertainty on eccstat.errorfloatJzz component of angular momentum of the Galactic orbitkpc.km/sphys.angMomentuminte_Jzrms uncertainty on Jzkpc.km/sstat.errorintUvelU component of Galactic space velocitykm/sphys.veloc;pos.cartesian.xfloate_Uvelrms uncertainty on Uvelkm/sstat.errorfloatVvelV component of Galactic space velocitykm/sphys.veloc;pos.cartesian.yfloate_Vvelrms uncertainty on Vvelkm/sstat.errorfloatWvelW component of Galactic space velocitykm/sphys.veloc;pos.cartesian.zfloate_Wvelrms uncertainty on Wvelkm/sstat.errorfloat_RARight Ascension (J2000) from SIMBAD (not part of the original data)degpos.eq.ra;meta.main_DEDeclination (J2000) from SIMBAD (not part of the original data)degpos.eq.dec;meta.main