Alternatives to the Press-Schechter cosmological mass function

Details Alternatives to the Press-Schechter cosmological mass function Alternatives to the Press-Schechter cosmological mass function

Mar 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..133p&link_type=abstract

Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 1, 1990, p. 133-143.

Statistics

Computation

158

Computational Astrophysics, Cosmology, Distribution Functions, Mass Distribution, Cooling, Dark Matter, Galactic Mass, Luminosity, Probability Distribution Functions, Spatial Filtering

Scientific paper

Consideration is given to the validity of the Press-Schechter (1974) formalism for the mass distribution function of bound objects which condense out of a primordial density perturbation field. Several modifications to the Press-Schechter formalism are discussed, including correctly accounting for the fate of material in underdense regions, incorporating recent results on density peaks, and using a simple model for the effects of cooling to estimate the mass function for luminous objects. As an example of the modified formalism, the mass function for galaxies is calculated, producing a qualitative explanation for the form of the galaxy luminosity function.

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