Report on a Study of Galaxy Formation in SPH Simulations

Abstract

The physical process that may be involved in the formation and evolution of galaxies, and their behaviour as a function of the redshift, can be of different natures. As a matter of fact, it is still unclear whether it is nature or nurture that really we should worry about (Ellis, 1997). During the last decade, a dramatic improvement in our understanding of the Universe has resulted from the development of important observational facilities. These new findings are helping astronomers to generate a more realistic picture of the evolution of structure and help to constrain models. However, how galaxies form and evolve remains an open question. Several complex processes acting on different scales are believed to be important...