J/A+A/317/689ivo://CDS.VizieR/J/A+A/317/689doi:10.26093/cds/vizier.33170689CDSThejll P.Flynn C.Williamson R.Saffer R.2001-07-31T14:05:55Z2001-07-31T14:05:46ZCDS support team

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

cds-question@unistra.frsubdwarf-starsproper-motionsWe report on first results from an ongoing program to measure and analyze proper motions for hot subdwarf and white dwarf stars, with the aim of determining to which stellar population sdB stars (in the V magnitude range 10.5 to 14.5) belong. Ours is the largest sample of hot subdwarf proper motions measured to date. Our kinematic analysis suggests that the parent population of these hydrogen-rich sdB stars is as old or older than the old disk. We measure the absolute magnitude of the sdB in the field as M_V_=4.5, providing independent confirmation of absolute V magnitude estimates for these stars from clusters and spectroscopic analyses. Provided it can be shown that the sdO stars evolve from the sdB, then the sdO absolute V magnitude distribution is about 1 magnitude brighter than for the sdB, and 1 magnitude wider.1997A&A...317..689Thttps://cdsarc.cds.unistra.fr/viz-bin/cat/J/A+A/317/689CatalogResearchIsServedByTAP VizieR generic serviceIsServedByConesearch servicehttps://cds.unistra.fr/vizier-org/licences_vizier.htmlhttps://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/A+A/317/689https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/A+A/317/689http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/A+A/317/689https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/A+A/317/689https://vizier.iucaa.in/viz-bin/votable?-source=J/A+A/317/689http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/A+A/317/689GETtext/xml+votablehttps://tapvizier.cds.unistra.fr/TAPVizieR/tapCone search capability for table J/A+A/317/689/sd (Astrometric results for the hot subdwarfs (table4 to 9 of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/317/689/sd?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/317/689/sd?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/317/689/sd?GETtext/xml+votable180.050000true0.278041711.01008890.005555555555555556Cone search capability for table J/A+A/317/689/wd (White dwarf astrometric results from the AC/CAMC and the POSS/GSC efforts (table10 & 11 of the paper))https://vizier.cds.unistra.fr/viz-bin/conesearch/J/A+A/317/689/wd?https://vizier.iucaa.in/viz-bin/conesearch/J/A+A/317/689/wd?http://vizieridia.saao.ac.za/viz-bin/conesearch/J/A+A/317/689/wd?GETtext/xml+votable180.050000true2.075583351.38798330.0055555555555555566/43 103 136 165 215 226 419 573 596 715 2056 2083 2094 2178 2180 2809 4285 4297 4319 4497 4689 4931 4938 5137 5190 5388 5544 5550 5884 5918 6113 6115 7259 7483 7779 7946 8016 8245 8280 8284 8518 8570 8671 8688 8696 8791 8813 8830 8923 8982 9071 9256 9319 9336 9382 9516 9720 9790 9954 9959 10048 10123 10146 10214 10333 10378-10379 10386 10400 10629 10903 10969 11029 11131 11159 11171 11242 11300 11529 11680 11784 11813 11815 11942 11984 12412 12497 12585 12627 15462 17790 17864 18132 18149 18341 18372 18906 18941 19068 19071 19130 19350 19372 19392 19429 19475 19649 19666 19710 19726 19741 19898 19942 19970 20165 20184 20207 20259 20321 20404 23244 25566 25751 25845 25927 25957 25990 26112 26184 26258 26299 26348 26446 26517 26570 26762 26808 26854 26883 27126 27187 27221 27324 27350 27395 27839 27871 27905 27963 28026 28183 28259 28266 28335 28390 28538 28559 28637 30406 31290 31549 31592 31622 31715 31735 32458 32476 32674 44798 45011https://cdsarc.cds.unistra.fr/viz-bin/moc/J/A+A/317/689?format=asciiOpticaldefaultJ/A+A/317/689/sdAstrometric results for the hot subdwarfs (table4 to 9 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainpm1Proper motion from the AC/CAMC systemarcsec/yrpos.pmfloate_pm1rms uncertainty on pm1arcsec/yrstat.errorfloatpmPA1Position angle for proper motion from the AC/CAMC system (counted positive east of north)degpos.posAnginte_pmPA1rms uncertainty on PA1degstat.errorintpm2? Proper motion from the POSS/GSC systemarcsec/yrpos.pmfloatnullablee_pm2? rms uncertainty on pm2arcsec/yrstat.errorfloatnullablepmPA2? Position angle for proper motion from the POSS/GSC system (positive east of north)degpos.posAngintnullablee_pmPA2? rms uncertainty on PA2degstat.errorintnullableNoteNotemeta.notecharJ/A+A/317/689/wdWhite dwarf astrometric results from the AC/CAMC and the POSS/GSC efforts (table10 & 11 of the paper)recnoRecord number assigned by the VizieR team. Should Not be used for identification.meta.recordintRAJ2000Right ascension J2000pos.eq.ra;meta.mainDEJ2000Declination J2000pos.eq.dec;meta.mainpmProper motionarcsec/yrpos.pmfloate_pmrms uncertainty on pmarcsec/yrstat.errorfloatpmPAPosition angle for proper motion (counted positive east of north)degpos.posAng;pos.pminte_pmPArms uncertainty on PAdegstat.errorintClassWD Spectral class (1)src.spTypecharNameVarious names for the star taken from the McCook & Sion catalog. (2)meta.id;meta.mainchar