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The Chemical Composition of Asymptotic Giant Branch Stars-the s-process

Published online by Cambridge University Press:  19 July 2016

David L. Lambert
David L. Lambert*
Affiliation:
Department of Astronomy University of Texas Austin, Texas, USA

Abstract

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This review discusses the chemical composition of AGB stars in the light of predictions for intermediate-mass (3-8 M⊙, 22Ne(α,n) = the neutron source) and low-mass (< 3 M⊙, 13C(α,n) = the neutron source) stars. LM-AGB models can be constructed with envelopes having a composition quite similar to that of solar system material, the SiC grains recently discovered in meteorites, and real AGB stars in the sequence of spectral types M → S → C. Stellar counterparts of the IM-AGB models have yet to be discovered.

Type
The AGB
Information
Symposium - International Astronomical Union , Volume 145: Evolution of Stars: The Photospheric Abundance Connection , 1991 , pp. 299 - 316
Copyright
Copyright © Kluwer 1991 

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