The Impact of Nucleosynthesis Models on Models of the Chemical Evolution of Disk Galaxies

Details The Impact of Nucleosynthesis Models on Models of the Chemical Evolution of Disk Galaxies The Impact of Nucleosynthesis Models on Models of the Chemical Evolution of Disk Galaxies

Jun 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010arep...54..489k&link_type=abstract

Astronomy Reports, Volume 54, Issue 6, pp.489-495

Astronomy and Astrophysics

Astronomy

Scientific paper

The impact of uncertainties in the relative efficiency of nucleosynthesis of various elements in stars on models of the chemical evolution of disk galaxies is studied using a single-zone model for the galactic evolution. The dependences of the abundances of 12C, 14N, 16O, and 56Fe on nucleosynthesis models are compared. The influence of the uncertainty in iron production by Type Ia supernovae on its abundance in a galaxy is also considered. It is concluded that differences in nucleosynthesis models can appreciably affect the results of modeling the early stages of galactic evolution, but this influence becomes insignificant at ages t> 109 yr. Uncertainties in the amount of iron ejected by Type Ia supernovae do not significantly influence the total galactic abundance of iron.

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