Paper:	Mapping Stellar Evolution and Nucleosynthesis in Asymptotic Giant Branch Stars via High-Resolution Spectroscopy
Volume:	336, COSMIC ABUNDANCES as Records of Stellar Evolution and Nucleosynthesis in honor of David L. Lambert
Page:	165
Authors:	Smith, V.V.
Abstract:	The synthesis of significant amounts of 12C, as well as many of the neutron-rich elements heavier than iron, occurs during He-shell burning on the asymptotic giant branch (AGB). Details of stellar evolution along the AGB can be discerned from observations of certain abundance patterns in various types of red giants. Here we focus on a discussion of two aspects of nucleosynthesis in AGB stars: 1) the production of 12C and the transformation of an oxygen-rich M-giant into a carbon-rich C-star, and 2) the neutron source involved in the synthesis of heavy neutron-rich elements via the slow capture of neutrons, the s-process, that occurs during AGB evolution.

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