https://doi.org/10.1051/epjconf/201716501039
A mechanism to account for well known peculiarities of low mass AGB star nucleosynthesis
1 Dipartimento di Fisica e Geologia, Università degli Studi di Perugia, Italia
2 INFN, Sezione di Perugia, Italia
* e-mail: sara.palmerini@pg.infn.it
Published online: 30 December 2017
We present here the application of a model for a mass circulation mechanism induced by the stellar magnetic field to study peculiar aspects of AGB star nucleosynthesis. The mixing scheme is based on a previously suggested magnetic-buoyancy process [1, 2] and here shown to account adequately for the formation of the 13C neutron source for s-processes. In particular our analysis results are focused on addressing the constrains to AGB nucleosynthesis coming from the isotopic composition of presolar grains recovered in meteorites. It turns out that n-captures driven by the magnetically-induced mixing can account for the isotopic abundance ratios of s-elements recorded.
© The Authors, published by EDP Sciences, 2017
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (http://creativecommons.org/licenses/by/4.0/).
