The results of deep CCD field surveys: Very low mass halo population stars as dark matter

Details The results of deep CCD field surveys: Very low mass halo population stars as dark matter The results of deep CCD field surveys: Very low mass halo population stars as dark matter

Jul 1995

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1995aipc..336...91b&link_type=abstract

Dark matter. AIP Conference Proceedings, Volume 336, pp. 91-94 (1995).

Physics

Dark Matter, Stellar Content And Populations, Morphology And Overall Structure

Scientific paper

Halo and disk M dwarfs differ significantly in metallicity. Multi-color deep CCD surveys are uniquely capable of detecting these separate populations of stars with differing metallicity and therefore colors. Analyzing very deep three-band CCD images covering 192 arcmin2 at high galactic latitude we find no evidence for a population of extreme low mass M subdwarfs sufficient to account for the halo dark matter. These observations covering a volume of 2×105 pc3 are consistent with extrapolations of a halo luminosity function determined using low metallicity stars in the solar neighborhood.

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