Author: Chiappini C.
Publisher: Springer Publishing Company
ISSN: 0004-640X
Source: Astrophysics and Space Science, Vol.284, Iss.2, 2003-01, pp. : 771-774
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Abstract
We compute the evolution of the C, N, O and Fe abundances as a function of time and galactocentric distance in the Milky Way (MW) for different sets of stellar yields. We then apply the `best' nucleosynthesis prescriptions found for the MW to other galaxies. Our main conclusions are: a) once the available observational data are properly interpreted, there is no compelling evidence for requiring the production of primary N in massive stars; b) both C and N we see today in the ISM come mainly from low- and intermediate-mass stars.
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