Energy Input and Mass Redistribution by Supernovae in the Interstellar Medium

We present the results of numerical studies of supernova remnant evolutionand their effects on galactic and globular cluster evolution. We show thatparameters such as the density and the metallicity of the environmentsignificantly influence the evolution of the remnant, and thus change itseffects on the global environment (e.g., globular clusters, galaxies) as asource of thermal and kinetic energy. We conducted our studies using a one-dimensional hydrodynamics code, in whichwe implemented a metallicity dependent cooling function. Global time-dependent quantities such as the total kinetic and thermalenergies and the radial extent are calculated for a grid of parameter sets. Thequantities calculated are the total energy, the kinetic energy, the thermalenergy, the radial extent, and the mass. We distinguished between the hot,rarefied bubble and the cold, dense shell, as those two phases are distinct intheir roles in a gas-stellar system. We also present power-law fits to those quantities as a function ofenvironmental parameters after the extensive cooling has ceased. The power-lawfits enable simple incorporation of improved supernova energy input and matterredistribution (including the effect of the local conditions) ingalactic/globular cluster models. Our results for the energetics of supernova remnants in the late stages oftheir expansion give total energies ranging from 9e49 to 3e50 ergs, with atypical case being 1e50 erg, depending on the surrounding environment. About8.5e49 erg of this energy can be found in the form of kinetic energy. Supernovae play an important role in the evolution of the interstellar medium