Post-AGB stars in the SMC as tracers of stellar evolution: The extreme s-process enrichment of the 21 μm star J004441.04-732136.4
Context. This paper is part of a larger project in which we want to focus on the still poorly understood asymptotic giant branch (AGB) third dredge-up processes and associated s-process nucleosynthesis. Aims. We confront accurate spectral abundance analyses of post-AGB stars in both the Magellanic Clouds, to state-of-the-art AGB model predictions. With this comparison we aim at improving our understanding of the 3rd dredge-up phenomena and their dependencies on initial mass and metallicity....[Show more]
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|Source:||Astronomy and Astrophysics|
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