2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/14273From a set of 3D cosmological simulations which incorporate a self-consistent model of the star-gas interactions, we have been able to obtain a statistically significant sample of galaxy-type halos with observational properties, like colors and luminosities. Using this data-base, we have studied general relations of galaxies, such as the Tully-Fisher relation, luminosity functions, environmental dependences, or cosmic star formation density.4 pages, 1 figure, to appear in proceedings of XIXth Moriond Astrophysics Meeting "Building galaxies: from the primordial universe to the present", March 13-20, 1999, Les Arcs, FranceAstrophysicstext