The mass distribution of groups and clusters of galaxies

Details The mass distribution of groups and clusters of galaxies The mass distribution of groups and clusters of galaxies

Oct 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...380...15c&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 380, Oct. 10, 1991, p. 15-23.

Astronomy and Astrophysics

Astrophysics

32

Galactic Clusters, Galactic Structure, Mass Distribution, Galactic Mass, Gravitational Collapse

Scientific paper

The collapse theories for the mass distribution of cosmic structures - of which the theory of Press and Schechter (1974) constitutes the archetype - are reformulated in terms of a rate equation with finite collapse and survival times. The mass distribution and the optical luminosity function expected for groups and clusters of galaxies in these hierarchical clustering scenarios are derived, considering both the collapse of high peaks in the initial overdensity field and the subsequent mass infall. The transition from direct collapse to merging and aggregation theories are discussed.

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