Evolutionary models for disk galaxies

The evolution of disk galaxies is studied within the framework of a gas turbulence energy balance between the supernovae input energy and the turbulence collisional dissipation. The initial mass, the angular momentum and the gas accretion rate determine the evolution of the models. The approach used here results particularly interesting to study the relationship among local features of a galaxy. As results, we predict the present gas content and the star formation history of a galaxy. The role of gas accretion is discussed. The comparison between models and observations shows that gas accretion may be very important to explain the high gas content of the dwarf irregular galaxies