One-dirme nsional calculations of the evolution of protogalaxies are presented. The stellar component, three phases of the interstellar medium and their interactions are treated in detail, taking into account stellar evolution, stellar mass loss, nucleosynthesis, heating and cooling of the gas, and condensation and evaporation of clouds. In agreement with observations the models yield massdependent results of 1) supernova-driven galactic mass loss that will form a hot corona around ellipticals and accounts for an abrupt termination of the evolution of dE's, 2) metal-enrichment, explaining the L-Z-relation, 3) low metallicity gradients in dwarf galaxies.
From the study of orbits and models of galaxies in recent years, it has become clear that Jeans' theorem is not adequate for building self-consistent models of real galaxies. The non-classical integrals play an important role in the dynamics of the system and their
non-global nátuře must be taken into consideration.
This work is about a new method for constructing self-consistent models of galaxies, where the distribution function is a function of the actions and the stochastic orbits are properly taken into account. It has been applied to the čase of constructing a
self-consistent model of a non-rotating bar, and the way by which this method can be used to construct any sort of disk model is discussed.