It is shown that prompt initial enrichment is naturally predicted by models of the chemical evolution of galaxies that account for the early collapse phase of galaxies and for a more general stellar birthrate function. A galaxy that is always uniform in density and composition is considered for simplicity, and the stellar birthrate function is defined relative to unit comoving volume. Several equations are derived which account for some observational data and can be used as a zeroth-order approximation.
An analytical model for the chemical evolution of galaxies
CAIMMI, ROBERTO
1979
Abstract
It is shown that prompt initial enrichment is naturally predicted by models of the chemical evolution of galaxies that account for the early collapse phase of galaxies and for a more general stellar birthrate function. A galaxy that is always uniform in density and composition is considered for simplicity, and the stellar birthrate function is defined relative to unit comoving volume. Several equations are derived which account for some observational data and can be used as a zeroth-order approximation.
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