Browsing by Author "Giuricin, Giuliano"

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    A Unique Mass Function from Galaxies to Clusters ?
    (SISSA, 1993-08-11) Giuricin, Giuliano; Mardirossian, Fabio; Mezzetti, Marino; Persic, Massimo; Salucci, Paolo; Physics; Astrophysics
    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).