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Intermediate-mass Asymptotic Giant Branch Stars and Sources of 26Al, 60Fe, 107Pd, and 182Hf in the Solar System

Wasserburg, G J; Karakas, Amanda; Lugaro, Maria


We explore the possibility that the short-lived radionuclides 26Al, 60Fe, 107Pd, and 182Hf inferred to be present in the proto-solar cloud originated from 3-8 M⊙ asymptotic giant branch (AGB) stars. Models of AGB stars with initial mass above 5 M⊙ are prolific producers of 26Al owing to hot bottom burning (HBB). In contrast, 60Fe, 107Pd, and 182Hf are produced by neutron captures: 107Pd and 182Hf in models ≲ 5 M⊙, and 60Fe in models with higher mass. We mix stellar yields from solar-metallicity...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
Source: The Astrophysical Journal
DOI: 10.3847/1538-4357/836/1/126


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