Low-mass stars in the spheroid of our Galaxy

Details Low-mass stars in the spheroid of our Galaxy Low-mass stars in the spheroid of our Galaxy

Jul 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992natur.358..383r&link_type=abstract

Nature (ISSN 0028-0836), vol. 358, no. 6385, July 30, 1992, p. 383-386. Research supported by NSERC and Killam Foundation.

Astronomy and Astrophysics

Astrophysics

70

Brown Dwarf Stars, Dark Matter, Galactic Rotation, Star Distribution, Stellar Mass, Astronomical Photometry, Mass Distribution, Missing Mass (Astrophysics), Stellar Luminosity

Scientific paper

The number of stars in the spheroid of the Galaxy appears to increase steeply for smaller masses, with no evidence of a turnover in a simple power-law distribution down to 0.14 solar mass, the limit of detectability. The measured rotation curve of the Galaxy at the sun suggests that the mass function cannot be extended beyond 0.05 solar mass, in which case low-mass stars fall an order of magnitude short of being able to supply the Galactic dark matter.

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