The effect of 12C + 12C rate uncertainties on s-process yields

M. E. Bennett, R. Hirschi, M. Pignatari, S. Diehl, C. Fryer, F. Herwig, A. Hungerford, G. Magkotsios, G. Rockefeller, Francis Timmes, M. Wiescher, Patrick Young

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Abstract

The slow neutron capture process in massive stars (the weak s-process) produces most of the s-only isotopes in the mass region 60 < A < 90. The nuclear reaction rates used in simulations of this process have a profound effect on the final s-process yields. We generated 1D stellar models of a 25M star varying the 12C + 12C rate by a factor of 10 and calculated full nucleosynthesis using the post-processing code PPN. Increasing or decreasing the rate by a factor of 10 affects the convective history and nucleosynthesis, and consequently the final yields.

Original languageEnglish (US)
Article number012023
JournalJournal of Physics: Conference Series
Volume202
DOIs
StatePublished - Jan 1 2010

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ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Bennett, M. E., Hirschi, R., Pignatari, M., Diehl, S., Fryer, C., Herwig, F., Hungerford, A., Magkotsios, G., Rockefeller, G., Timmes, F., Wiescher, M., & Young, P. (2010). The effect of 12C + 12C rate uncertainties on s-process yields. Journal of Physics: Conference Series, 202, [012023]. https://doi.org/10.1088/1742-6596/202/1/012023