The dynamics of a hot (T of about 10 to the 7th K) gas cloud with volume energy losses

Details The dynamics of a hot (T of about 10 to the 7th K) gas cloud with volume energy losses The dynamics of a hot (T of about 10 to the 7th K) gas cloud with volume energy losses

Aug 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64..708s&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, July-Aug. 1987, p. 708-719. In Russian.

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Astronomical Models, Cosmic Gases, Energy Dissipation, Gas Dynamics, High Temperature Gases, Molecular Clouds, Computational Astrophysics, Galactic Evolution, Gas Density, Gravitational Fields, Star Formation

Scientific paper

The dynamics of a hot (T = 106 - 5×107K) gas cloud with volume energy losses is investigated by numerical integration of gas dynamics equations. The dynamics is governed by a spherically symmetric gravitational field of the cloud and additional "hidden" mass. The cloud mass is taken in the range M0 = 1010 - 1012M_sun;, its radius R0 = 50 - 200 kpc, the "hidden" mass Mν = 1011 - 3×1013M_sun;. The results show that in such systems a structure can develop in the form of a dense compact nucleus with a radius Rsvery lowR0, and an extended rarefied hot envelope with a radius RX ≡ R0. Among the models involved are those where the gas cloud is either entirely blown up or entirely collapses. The results are discussed in connection with the formation and early evolution of galaxies, the history of star formation and chemical evolution of galaxies, the origin of hot gas in galaxies and clusters of galaxies.

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