Astronomy and Astrophysics – Astrophysics
Scientific paper
May 1988
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988a%26a...197...33t&link_type=abstract
Astronomy and Astrophysics (ISSN 0004-6361), vol. 197, no. 1-2, May 1988, p. 33-46.
Astronomy and Astrophysics
Astrophysics
105
Astronomical Models, Chemical Evolution, Galactic Evolution, Interstellar Matter, Nuclear Fusion, Star Formation Rate, Abundance, Computerized Simulation, Disk Galaxies, Stellar Evolution
Scientific paper
Numerical models of the Galactic disk have been computed under varying assumptions on the main evolution parameters in order to investigate the uniqueness of solutions to the problem of the chemical evolution of galaxies. Model assumptions which are necessary to reproduce the observations, such as the star formation rate not having decreased rapidly with time and not being simply proportional to the gas density, are identified. It is found that model predictions on elemental and isotopic ratios depend primarily on the adopted initial mass function and stellar nucleosynthesis, and that model predictions on radial distributions and age-metallicity relations depend mostly on the adopted star formation rate, infall rate, and initial mass function. The results suggest a revision of the nucleosynthesis of C-13.
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