Astronomy and Astrophysics – Astronomy
Scientific paper
Feb 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988azh....65....1s&link_type=abstract
Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 65, Jan.-Feb. 1988, p. 1-11. In Russian.
Astronomy and Astrophysics
Astronomy
2
Astronomical Models, Galactic Evolution, High Temperature Gases, Star Formation, Stellar Systems, Dark Matter, Globular Clusters, Stellar Mass, Thermal Instability
Scientific paper
A mechanism by which a protogalaxy transforms into a stellar system is proposed in the framework of the hot model of galaxy formation. The mechanism gives a quantitative relation between the mass and size of the galaxy which agrees well with the observational relation; it also specifies two characteristic mass values which coincide with masses of stars and globular clusters. It is shown that a hot protogalaxy (T = 10 to the 7th K) contracting under the gravity of a massive dark halo attains a critical size and fragments into separate clouds via thermal instability.
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