Candidate halo dark matter J/other/Sci/292. ivo://CDS.VizieR/J/other/Sci/292.698 CDS Oppenheimer B.R. Hambly N.C. Digby A.P. Hodgkin S.T. Saumon D. 2017-11-28T13:21:39Z 2007-11-13T06:51:33Z CDS support team CDS, Observatoire de Strasbourg, 11 rue de l'Universite, F-67000 Strasbourg, France cds-question@unistra.fr white-dwarf-stars dwarf-stars subdwarf-stars proper-motions astrometry visible-astronomy photographic-photometry The Milky Way galaxy contains a large, spherical component which is believed to harbor a substantial amount of unseen matter. Recent observations indirectly suggest that as much as half of this "dark matter" may be in the form of old, very cool white dwarfs, the remnants of an ancient population of stars as old as the galaxy itself. We conducted a survey to find faint, cool white dwarfs with large space velocities, indicative of their membership in the galaxy's spherical halo component. The survey reveals a substantial, directly observed population of old white dwarfs, too faint to be seen in previous surveys. This newly discovered population accounts for at least 2 percent of the halo dark matter. It provides a natural explanation for the indirect observations, and represents a direct detection of galactic halo dark matter. 2001Sci...292..698O https://cdsarc.cds.unistra.fr/viz-bin/cat/J/other/Sci/292.698 Catalog Research IsServedBy TAP VizieR generic service IsServedBy Conesearch service https://cds.unistra.fr/vizier-org/licences_vizier.html https://vizier.cds.unistra.fr/viz-bin/VizieR-2?-source=J/other/Sci/292.698 https://vizier.iucaa.in/viz-bin/VizieR-2?-source=J/other/Sci/292.698 http://vizieridia.saao.ac.za/viz-bin/VizieR-2?-source=J/other/Sci/292.698 https://vizier.cds.unistra.fr/viz-bin/votable?-source=J/other/Sci/292.698 https://vizier.iucaa.in/viz-bin/votable?-source=J/other/Sci/292.698 http://vizieridia.saao.ac.za/viz-bin/votable?-source=J/other/Sci/292.698 GET text/xml+votable https://tapvizier.cds.unistra.fr/TAPVizieR/tap Cone search capability for table J/other/Sci/292.698/table1 (Candidate Halo White Dwarfs) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/Sci/292.698/table1? https://vizier.iucaa.in/viz-bin/conesearch/J/other/Sci/292.698/table1? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/Sci/292.698/table1? GET text/xml+votable 180.0 50000 true 11.3320625 -33.49151667 0.005555555555555556 Cone search capability for table J/other/Sci/292.698/ohdhs (Complete dataset of Figure 1 of the paper) https://vizier.cds.unistra.fr/viz-bin/conesearch/J/other/Sci/292.698/ohdhs? https://vizier.iucaa.in/viz-bin/conesearch/J/other/Sci/292.698/ohdhs? http://vizieridia.saao.ac.za/viz-bin/conesearch/J/other/Sci/292.698/ohdhs? GET text/xml+votable 180.0 50000 true 20.259816389 3.127511389 0.005555555555555556 5/4355 4674 9215 6/5 6 8 16384 16390 16391 16394 16399 16400 16406 16407 16410 16412 16420 16422 16433 16434 16435 16440 16443 16445 16450 16455 16458 16467 16468 16476 16478 16482 16492 16494 16502 16503 16526 16528 16532 16534 16543 16546 16551 16554 16558 16561 16570 16575 16581 16583 16584 16585 16587 16589 16591 16592 16595 16601 16602 16603 16606 16609 16612 16614 16618 16619 16625 16628 16630 16631 16632 16638 16641 16642 16646 16648 16653 16654 16658 16660 16662 16664 16669 16671 16673 16677 16681 16684 16686 16687 16692 16694 16697 16700 16703 16704 16705 16715 16719 16725 16733 16744 16746 16747 16754 16755 16759 16770 16785 16790 16799 16800 16809 16820 16823 16826 16827 16830 16832 16834 16836 16841 16842 16847 16849 16851 16853 16854 16856 16858 16859 16864 16865 16868 16870 16872 16873 16875 16879 16883 16884 16892 16894 16898 16900 16901 16904 16908 16910 16912 16915 16917 16927 16928 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Should Not be used for identification. meta.record int Name Star name (1) meta.id;meta.main char n_Name [+ *] Spectral peculiarities (2) meta.note char RAJ2000 Right ascension (J2000.00) pos.eq.ra;meta.main DEJ2000 Declination (J2000.00) pos.eq.dec;meta.main pm Total proper motion arcsec/yr pos.pm float e_pm Error in total proper motion arcsec/yr stat.error float pmPA Position angle of proper motion deg pos.pm;pos.posAng float BJmag B_J_ magnitude mag phot.mag;em.opt.B float BJ-R59F B_J_-R59F colour index, with uncertainty of +/-0.1mag on average mag phot.color;em.opt.B;em.opt.R float R59F-IN R59F-I_N_ colour index, with uncertainty of +/-0.1mag on average mag phot.color;em.opt.R;em.opt.I float n_R59F-IN [+] +: calculated from spectrophotometry meta.note char Vtan Estimated tangential velocity, based on photometric parallax km/s phys.veloc.transverse int Dist Distance estimate based on a color-magnitude relation pc pos.distance;pos.heliocentric int SimbadName Simbad column added by the CDS meta.id char
J/other/Sci/292.698/ohdhs Complete dataset of Figure 1 of the paper recno Record number assigned by the VizieR team. Should Not be used for identification. meta.record int F1 ESO/SRC Schmidt field no. of master plate containing this object (ESO-R or UK Schmidt J plate) obs.field int F2 ESO/SRC (3 digit) or POSS-I (4 digit) field no. of second R plate (UK Schmidt R or POSS-I E plate) obs.field int RAJ2000 Right ascension (J2000.0) pos.eq.ra;meta.main DEJ2000 Declination (J2000.0) pos.eq.dec;meta.main Epoch Epoch of position yr time.epoch double pm Total proper motion arcsec/yr pos.pm float e_pm Error in total proper motion arcsec/yr stat.error float pmPA Celestial position angle of proper motion measured east of north deg pos.pm;pos.posAng float Bjmag Magnitude of star in photographic Bj (GG395/IIIaJ filter/emulsion combo) mag phot.mag;em.opt.B float R1mag Magnitude of star in photographic R from first red plate (RG630/IIIaF or 2444-plexiglass/103aE combo) mag phot.mag;em.opt.R float R2mag Magnitude of star in photographic R from second red plate (OG590/IIIaF combo) mag phot.mag;em.opt.R float Imag ? Magnitude of star in photographic I (RG715/IV-N combo) mag phot.mag;em.opt.I float nullable H Reduced proper motion (2) mag phys.magAbs float Bj-R2 B-R photographic colour of star mag phot.color;em.opt.B;em.opt.R float Flg [0]? Visual inspection flag (3) meta.code int nullable Symb ? PGPLOT symbol type for star category (4) meta.code int nullable chi2X chi-squared statistic for X (5) stat.probability double chi2Y chi-squared statistic for Y (5) stat.probability double