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Galaxy formation through hierarchical clustering
White, Simon D. M.; Frenk, Carlos S.
AA(Steward Observatory, Tucson, AZ), AB(Durham, University, England)
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 379, Sept. 20, 1991, p. 52-79. Research supported by NASA, NSF, and SERC. (ApJ Homepage)
Publication Date:
NASA/STI Keywords:
Galactic Clusters, Galactic Evolution, Galactic Structure, Star Distribution, Star Formation, Analytic Functions, Brightness Distribution, Cosmology, Dark Matter, Halos, Numerical Analysis
Bibliographic Code:


Analytic methods for studying the formation of galaxies by gas condensation within massive dark halos are presented. The present scheme applies to cosmogonies where structure grows through hierarchical clustering of a mixture of gas and dissipationless dark matter. The simplest models consistent with the current understanding of N-body work on dissipationless clustering, and that of numerical and analytic work on gas evolution and cooling are adopted. Standard models for the evolution of the stellar population are also employed, and new models for the way star formation heats and enriches the surrounding gas are constructed. Detailed results are presented for a cold dark matter universe with Omega = 1 and H(0) = 50 km/s/Mpc, but the present methods are applicable to other models. The present luminosity functions contain significantly more faint galaxies than are observed.

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