White dwarfs and dark matter.

  title={White dwarfs and dark matter.},
  author={Brad K. Gibson and Chris Flynn},
  volume={292 5525},
Based on the identification of 38 white dwarfs with halo kinematics, in a survey covering 10% of the sky near the south galactic pole, Oppenheimer et al. ([1][1]) argued that at least 2% of the dark matter in the Milky Way galaxy has now been detected directly. Put into context, the Oppenheimer et 
White dwarfs and Galactic dark matter
We discuss the recent discovery by Oppenheimer et al. of old, cool white dwarf stars, which may be the first direct detection of Galactic halo dark matter. We argue here that the contribution of more
The Galactic Halo from Microlensing
The status of the microlensing search for galactic dark matter in the form of massive astronomical compact halo objects (machos) is reviewed. Unresolved issues are discussed, as well as possible ways
Simulating a white dwarf dominated Galactic halo
Observational evidence has suggested the possibility of a Galactic halo dominated by white dwarfs (WDs). While debate continues concerning the interpretation of this evidence, it is clear that an
Expériences de détection directe de la matière sombre non baryonique Direct searches for non-baryonic dark matter
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New Wine, New Vintages, and Limoncello: Conference Summary
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Is Galactic Dark Matter White
We calculate the expected white dwarf luminosity functions and discovery functions in photometric passbands, assuming that these stellar remnants provide a substantial fraction of the sought Galactic
The Chemical Residue of a White Dwarf-dominated Galactic Halo
Halo initial mass functions (IMFs) heavily biased toward white dwarf (WD) precursors (i.e., ~1-8 M☉) have been suggested as a suitable mechanism for explaining microlensing statistics along the line
Direct Detection of Galactic Halo Dark Matter
A survey to find faint, cool white dwarfs with large space velocities, indicative of their membership in the galaxy's spherical halo component reveals a substantial, directly observed population of oldwhite dwarfs, too faint to be seen in previous surveys, and represents a direct detection of galactic halo dark matter.
A search for nearby counterparts to the moving objects in the Hubble Deep Field
Ibata et al. have recently discovered very faint, moving objects in the Hubble Deep Field (HDF). The number, apparent magnitudes and proper motions of these objects are consistent with old white
Discovery of High Proper-Motion Ancient White Dwarfs: Nearby Massive Compact Halo Objects?
It appears that a significant fraction of the local dark matter halo is in the form of very old, cool, white dwarf stars, found in a systematic proper-motion survey.
Infrared spectrum of an extremely cool white-dwarf star
An infrared spectrum of an extremely cool white dwarf that is consistent with the new models is reported, determining the star's temperature to be 3,500 ± 200 K, making it the coolest known white dwarf.
White Dwarfs in Globular Clusters: Hubble Space Telescope Observations of M4*
Using WFPC2 on the Hubble Space Telescope, we have isolated a sample of 258 white dwarfs (WDs) in the Galactic globular cluster M4. Fields at three radial distances from the cluster center were
The Luminosity Function of White Dwarfs
Trigonometric parallaxes, optical colors, and spectrophotometry are used to derive an empirical luminosity function for cool white dwarfs using the 1/V(max) method. To facilitate comparison with
A Very Low Luminosity, Very Cool, DC White Dwarf*
The star LHS 3250 is found to be a white dwarf at a distance of 30 pc. Its absolute magnitudes (MV = 15.72, Mbol = 16.2) put it among the least luminous white dwarfs known. Its optical spectrum shows
WD 0346+246: A Very Low Luminosity, Cool Degenerate in Taurus
We report the serendipitous discovery of a new, very low luminosity, cool degenerate in the region of Taurus. The object was found as a very high proper-motion star (μ = 1.″3 yr-1) on seven I-band UK