s-Processing from MHD-Induced Mixing and Isotopic Abundances in Presolar SiC Grains

Abstract

It has been known for decades that s-process elements from Sr to Pb are produced by Asymptotic Giant Branch stars. However only recently, physically-based mixing mechanisms for the formation of C have been proposed. Among them, we aim to verify the robustness of the model of a MHD induced C-pocket formation. In doing that we present results of nucleosynthesis models for low mass AGB stars, developed from the MHD scenario, compared with the isotopic abundance ratios of s-elements from presolar Mainstream SiC grains.