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Identification of Key Astrophysical Resonances Relevant for the Al26g(p,γ)Si27 Reaction in Wolf-Rayet Stars, AGB stars, and Classical Novae

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Original languageEnglish
Article number162502
Number of pages4
JournalPhysical Review Letters
Issue number16
Publication statusPublished - 22 Apr 2009


A γ-ray spectroscopy study of Al26g+p resonant states in Si27 is presented. Excitation energies were measured with improved precision and first spin-parity assignments made for excited states in Si27 above the proton threshold. The results indicate the presence of low-lying resonances with lp=0 and lp=2 captures that could strongly influence the Al26g(p,γ)Si27 reaction rate at low stellar temperatures, found in low-mass asymptotic giant branch (AGB), intermediate-mass AGB, super AGB, and Wolf-Rayet stars.

ID: 4178959