Abstract
view Abstract Citations (27) References (42) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Gas cloud collisions in protogalaxies. I - Numerical simulations Struck-Marcell, C. Abstract A series of time-dependent, numerical hydrodynamical simulations of high-velocity atomic gas cloud collisions in protogalaxies is presented. The protogalactic gas is assumed to be essentially metal-free. The processes of heating, cooling, ionization, recombination, molecule formation and destruction are included in the simulations. The outcome of a cloud collision is found to depend sensitively on the detailed microphysics. In particular, a small amount of H2 formed in the dense, post-shock gas can, in some range of the collision parameters, cool the gas to a relatively low temperature (lower than about 300 K). This temperature may be much lower than the precollision cloud temperature, and thus the cold gas may be very susceptible to star formation. Publication: The Astrophysical Journal Pub Date: August 1982 DOI: 10.1086/160152 Bibcode: 1982ApJ...259..116S Keywords: Astronomical Models; Cloud Physics; Collision Parameters; Computerized Simulation; Galactic Evolution; Hydrogen Clouds; Gas Temperature; Hydrodynamic Equations; Interstellar Gas; Particle Interactions; Stellar Evolution; Time Dependence; Astrophysics full text sources ADS |
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