出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：We study the evolution of the cosmic star formation in the universe by computing the luminosity
density (in the UV, B, J, and K bands) and the stellar mass density of galaxies in two reference
models of galaxy evolution: the pure-luminosity evolution (PLE) model developed by Calura
& Matteucci (2003) and the semi-analytical model (SAM) of hierarchical galaxy formation by
Menci et al. (2002). Our results suggest that at low-intermediate redshifts (z< 1.5) both models
are consistent with the available data on the luminosity density of galaxies in all the considered
bands. At high redshift the luminosity densities predicted in the PLE model show a peak due
to the formation of ellipticals, whereas in the hierarchical picture a gradual decrease of the star
formation and of the luminosity densities is predicted for z> 2.5. Both scenarios allow us to fit
the observed stellar mass density evolution up to z=1. At z>1, the PLE and SAM models tend to
overestimate and underestimate the observed values, respectively.
