Extra-Mixing Processes in Asymptotic Giant Branch Stars

Details Extra-Mixing Processes in Asymptotic Giant Branch Stars Extra-Mixing Processes in Asymptotic Giant Branch Stars

Sep 2011

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aspc..445...29s&link_type=abstract

Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants. Proceedings of a conference held at University Ca

Astronomy and Astrophysics

Astronomy

Scientific paper

Extra mixing is the mixing of material in regions that are stable against convection. We identify two situations in asymptotic giant branch stars where extra mixing is thought to be required. We then discuss four physical processes that might be the cause of such mixing: convective overshooting, rotational mixing, internal gravity waves and thermohaline mixing. The first three are discussed in terms of the formation of the 13C pocket, while the last is discussed in relation to abundance changes during the interpulse. We round off this review with some comments on how progress might be made in this area.

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