Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985a%26a...149..408i&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 149, no. 2, Aug. 1985, p. 408-412. Research supported by the University of Flo
Astronomy and Astrophysics
Astronomy
26
Black Holes (Astronomy), Disk Galaxies, Galactic Structure, Milky Way Galaxy, Radial Velocity, Stellar Motions, Celestial Mechanics, Galactic Evolution, Mass Distribution, Star Distribution, Supermassive Stars
Scientific paper
The possibility is explored that the Galactic halo has a large component made of supermassive objects with masses many times that of the sun, possibly black-hole remnants, which have been formed as final products of the evolution of hypothetical Population III pregalactic supermassive stars (Carr et al., 1984). The aim is to derive plausible bounds for their masses by studying the effects that this halo population may have on the dynamical behavior of the disk component of the Galaxy. An upper bound is found to be 10 to the 5th to 10 to the 6th solar masses; larger masses than this would give a greater increase in the velocity dispersion of disk stars, inconsistent with observation, and would produce more high velocity stars than observed.
Ipser James R.
Semenzato R.
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