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2007ApJ...666..231B - Astrophys. J., 666, 231-235 (2007/September-1)
Stellar velocity dispersion of the Leo A dwarf galaxy.
BROWN W.R., GELLER M.J., KENYON S.J. and KURTZ M.J.
Abstract (from CDS):
We measure the first stellar velocity dispersion of the Leo A dwarf galaxy, σ=9.3±1.3 km/s. We derive the velocity dispersion from the radial velocities of 10 young B supergiants and two H II regions in the central region of Leo A. We estimate a projected mass of (8±2.7)x107 M☉ within a radius of 2' and a mass-to-light ratio of at least 20±6 M☉/L☉. These results imply Leo A is at least ∼80% dark matter by mass.
Abstract Copyright: ∼
Journal keyword(s): Galaxies: Individual: Name: Leo A
Simbad objects: 29
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