New computations of He shell nucleosynthesis occurring during both radiative and convective phases are presented for stars in the range 8 - 25 M_sun;, taking in account the recent changes proposed for many cross sections. While the internal zones, swept by the radiative shell, are shown to efficiently produce elements up to A = 70 - 80 only in the most massive stellar models, the intermediate convective regions can be an important source for elements like <SUP>12</SUP>C, <SUP>18</SUP>O, <SUP>22</SUP>Ne and Mg isotopes.
Nucleosynthesis by N-14 depletion during shell He burning in massive stars
BUSSO, Maurizio Maria;
1987
Abstract
New computations of He shell nucleosynthesis occurring during both radiative and convective phases are presented for stars in the range 8 - 25 M_sun;, taking in account the recent changes proposed for many cross sections. While the internal zones, swept by the radiative shell, are shown to efficiently produce elements up to A = 70 - 80 only in the most massive stellar models, the intermediate convective regions can be an important source for elements like 12C, 18O, 22Ne and Mg isotopes.File in questo prodotto:
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