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AbstractAbstract
[en] The large, fully three-dimensional n-body programs designed for numerical experiments on the dynamics of galaxies have been used for investigations of protogalactic collapses. The dynamical aspects of galaxy formation dominate in this approach, as they should. Our experiments start from a large rotating gaseous mass that is made up of many gas clouds. The large mass collapses because it is out of equilibrium. Stars form as the collapse proceeds. The problem is formulated, limiting-case examples are described, and results from simple ''first cut'' models are given. Results with no star formation are contrasted with results for very rapid star formation. All models with gas formed thin disklike structures; some were circular, while others were oval. The principal result from the simple models is that stars continue to form rapidly even after the gas has been depleted to unacceptably low levels (1% of the galactic mass in gas). This occurs because gas settles in local valleys of the gravitational potential field until enough has collected for stars to form. These results show that more elaborate models, in which the physical processes in star formation are better represented, are required for more realistic representations of galaxies. Such models will be considered in future papers
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Journal Article
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Astrophysical Journal; ISSN 0004-637X;
; v. 244(2); p. 467-475

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