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
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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
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