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Nucleosynthetic Activity of WR Stars: Implications for 26Al in the Galaxy and Isotopic Anomalies in Cosmic Rays and the Early Solar System

Published online by Cambridge University Press:  03 August 2017

N. Prantzos
N. Prantzos*
Affiliation:
Institut d'Astrophysique de Paris, 98bis, Bd. Arago, F-75014 Paris, France Service d'Astrophysique, C.E.N. Saclay, F-91191 Gif sur Yvette, France

Abstract

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The implications of the nucleosynthetic activity of WR stars are reassessed, in view of recent experimental and observational data. It is confirmed that WR stars may 1) contribute significantly (up to ~20%) to the ~3 M⊙ of 26Al detected in the galactic plane through its 1.8 MeV line, 2) be responsible for the isotopic anomalies of 22Ne and 25,26Mg, detected in galactic cosmic rays (GCR), and 3) be responsible for the inferred presence of 26Al and 107Pd in the early solar system (and, perhaps, some other nuclei as well).

Type
Session VII. Evolution
Information
Symposium - International Astronomical Union , Volume 143: Wolf–Rayet Stars and Interrelations with other Massive Stars in Galaxies , 1991 , pp. 550
Copyright
Copyright © Kluwer 1991 

References

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