Other
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983apj...269..531p&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 269, June 15, 1983, p. 531-559. Research supported by the Alfred P. Sloan F
Other
49
Astronomical Models, Galactic Evolution, Interstellar Gas, Molecular Clouds, Nebulae, Angular Velocity, Coalescing, Globular Clusters, Kinetic Equations
Scientific paper
The present work represents part of a general study of systems containing interacting gas clouds ("cloud systems") using numerical simulations of a transport equation which describes the evolution of the frequency distributions of the physical properties of the clouds. Although the main emphasis in this initial work is on the evolution of protostellar and protogalactic gas clouds, many of the results are applicable to other systems, especially the evolution of interstellar clouds in the galactic disk and the evolution of turbulent density fluctuations. The systems of interest are generally quite complex. Clouds may undergo various types of inelastic direct collisions, tidal encounters, interactions with ambient gas such as accretion, ablation, and hydrodynamical drag, long-range gravitational accelerations due to other clouds, violent relaxation due to a rapidly-changing gravitational potential, and contraction due to self-gravity. A major emphasis in the work is the evolution of the frequency distribution of masses (the "mass spectrum") of the interacting clouds. The primary motivation for this emphasis is that the mass spectra of stars in clusters, globular clusters in galaxies, and galaxies in clusters can be determined observationally.
Pumphrey W. A.
Scalo John M.
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