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Article overview
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Stellar Yields and Chemical Evolution | Brad K. Gibson
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31 Dec 1997 | Subject: | astro-ph | Affiliation: | MSSSO | Abstract: | Several speakers at IAU Symposium #187 (Cosmic Chemical Evolution) alluded to the zeroth-order agreement between Type II supernovae (SNe) stellar yield compilations, as predicted by the models of those most responsible for driving progress in the field - i.e., Arnett (1991,1996); Maeder (1992); Woosley & Weaver (1995); Langer & Henkel (1995); Thielemann et al. (1996). It is important though for those entering (or indeed, already involved in!) the chemical evolution field to be cognizant of the fact that there are important first- and second-order differences between these compilations. In the next few pages, I provide a qualitative comparison of the currently available Type II SNe yield grids. The strengths and weaknesses of a given grid, demonstrated by comparing against relevant observations, are noted. Some simple chemical evolution models are shown which graphically demonstrate the effect of yield grid selection. | Source: | arXiv, astro-ph/9712349 | Services: | Forum | Review | PDF | Favorites |
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