Constraints on the Dwarf Star Content of Dark Matter

Details Constraints on the Dwarf Star Content of Dark Matter Constraints on the Dwarf Star Content of Dark Matter

Jan 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995phrvl..74..216b&link_type=abstract

Physical Review Letters, Volume 74, Issue 2, January 9, 1995, pp.216-219

Physics

9

Scientific paper

Infrared observations of the halo of the Milky Way show that less than 3% of the dynamically inferred dark matter is due to 0.1 Msolar stars (M8 dwarfs). Observations of the diffuse light in the rich cluster of galaxies Abell 2029 lead to even stronger limits. Indeed, less than about 1% of the cluster dark matter is due to 0.1Msolar stars. Recent observations of microlensing candidates suggest that the dark matter in the halo of the Milky Way might consist of red/brown dwarf stars with masses in the range 0.01Msolar to 1.0Msolar. If so, the mass function of these objects must be sharply peaked just below 0.1Msolar, the mass marking the onset of hydrogen burning.

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