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| Paper: |
Post-AGB Stars in the Magellanic Clouds as Tracers of the s-Process Nucleosynthesis |
| Volume: |
497, Why Galaxies Care about AGB Stars III: A Closer Look in Space and Time |
| Page: |
241 |
| Authors: |
De Smedt, K.; Van Winckel, H.; Kamath, D.; Karakas, A. I.; Siess, L.; Goriely, S.; Wood, P. R. |
| Abstract: |
Post-AGB stars are ideal probes of the internal processes which occur
during the AGB phase. The Galactic post-AGB star sample displays strong
chemical diversity, but the poorly known distances and hence luminosities
and initial masses hamper the interpretation in the broader context of
(chemical) stellar evolution. To overcome these limitations, we perform
chemical studies of post-AGB stars in the Magellanic Clouds. We discuss
our results obtained so far and report on the most interesting
discrepancies between observations and model predictions with a main
focus on the challenges regarding C, O and the s-process elements
including lead (Pb). We discuss the implications of our findings on
our understanding of the AGB nucleosynthesis and mixing processes.
Our results show that, similar to Galactic post-AGB stars, there exists
considerable chemical diversity among Magellanic Cloud post-AGB stars. |
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