出版社：SISSA, Scuola Internazionale Superiore di Studi Avanzati
摘要：Cosmological LambdaCDM TreeSPH simulations of the formation and evolution of galaxy
groups and clusters have been performed. The simulations include: star formation, chemical
evolution with non-instantaneous recycling, metal dependent radiative cooling, strong star burst
and (optionally) AGN driven galactic super winds, effects of a meta-galactic UV field and thermal
conduction. We report results on the temperature and entropy profiles of the ICM, the X-ray
luminosity, cold fraction, M/L and IMLR ratios in gas and stars, metal abundances and gradients.
Besides, the properties of the galaxy populations in the two richest clusters are discussed: global
star formation rates of the cluster galaxies, the total K-band luminosity, the galaxy luminosity
functions at z=0 and their redshift evolution, the colour-magnitude relation (“red sequence”) as
resulting from metallicity effects, and the role of the IMF in reproducing colours and abundances
of the stellar populations. Finally the contribute (20-40%) to cluster light from the intra-cluster
stars and the cD galaxy has been investigated: surface brightness profiles, mean colours and chemical
abundances, kinematics (velocity dispersion and distributions) of the IC stellar populations.
