A Unique Mass Function from Galaxies to Clusters ?
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Date
1993-08-11
Journal Title
Journal ISSN
Volume Title
Publisher
SISSA
Abstract
We present an observational mass function ranging from galaxies to massive galaxy clusters, derived from direct dynamical mass estimates. Our mass function shows, in the low-mass range of galaxies and groups, a behaviour in agreement with that of standard CDM (n=-2), while in the high-mass range (clusters) our mass function is shallower (and thus contains more power) than standard CDM; it also results shallower than the recent mass function by Bahcall & Cen (1993, ApJ 407, L49).
Description
9 pages (2 figures not included, available upon request), LATEX,
SISSA Ref. 132/93/A