The synthesis of helium and CNO isotopes in massive stars |
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| Authors: | N Langer C Henkel |
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| Institution: | (1) MPI für Astrophysik, D-85740 Garching, Germany;(2) MPI für Radioastronomie, D-53121 Bonn, Germany |
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| Abstract: | We present helium and CNO isotopic yields for massive mass-losing stars in the initial mass range 15M
  M
i 50M
. We investigate their dependence on assumptions about mass loss rates, internal mixing processes, and metallicity, and specify the contributions from stellar winds and from supernova ejecta. |
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| Keywords: | Stellar evolution nucleosynthesis mass loss supernovae chemical evolution |
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