Sign on

SAO/NASA ADS Astronomy Abstract Service


· Find Similar Abstracts (with default settings below)
· Full Refereed Journal Article (PDF/Postscript)
· Full Refereed Scanned Article (GIF)
· References in the article
· Citations to the Article (25) (Citation History)
· Refereed Citations to the Article
· Reads History
·
· Translate This Page
Title:
Gas cloud collisions in protogalaxies. I - Numerical simulations
Authors:
Struck-Marcell, C.
Affiliation:
AA(Yale University Observatory, New Haven, CT)
Publication:
Astrophysical Journal, Part 1, vol. 259, Aug. 1, 1982, p. 116-126. (ApJ Homepage)
Publication Date:
08/1982
Category:
Astrophysics
Origin:
STI
NASA/STI 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
DOI:
10.1086/160152
Bibliographic Code:
1982ApJ...259..116S

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.

Printing Options

Print whole paper
Print Page(s) through

Return 600 dpi PDF to Acrobat/Browser. Different resolutions (200 or 600 dpi), formats (Postscript, PDF, etc), page sizes (US Letter, European A4, etc), and compression (gzip,compress,none) can be set through the Printing Preferences



More Article Retrieval Options

HELP for Article Retrieval


Bibtex entry for this abstract   Preferred format for this abstract (see Preferences)


Find Similar Abstracts:

Use: Authors
Title
Keywords (in text query field)
Abstract Text
Return: Query Results Return    items starting with number
Query Form
Database: Astronomy
Physics
arXiv e-prints