Impacts of nuclear-physics uncertainty in stellar temperatures on the s-process nucleosynthesis

Abstract

We evaluated the uncertainty relevant to s-process nucleosynthesis using a Monte-Carlo centred approach. We are based on a realistic and general prescription of temperature dependent uncertainty for the reactions. We considered massive stars for the weak s-process and AGB stars for the main s-process. We found that the adopted uncertainty for (n,${\hat{I}}^3$) rates, tens of per cent on average, affect the production of s-process nuclei along the ${\hat{I}}^2$-stability line, while for ${\hat{I}}^2$-decay, for which contributions from excited states enhances the uncertainty, has the strongest impact on branching points.

3 pages, 3 figures, to be published in the Proceedings of "the 14th International Symposium on Nuclei in the Cosmos (NIC-XIV)"; see arXiv:1701.00489, for the completed results