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Chemical enrichment from Wolf-Rayet stellar winds

Published online by Cambridge University Press:  25 May 2016

Georges Meynet
Georges Meynet*
Affiliation:
Geneva Observatory, CH-1290 Sauverny, Switzerland

Abstract

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Stellar winds contribute together with supernovae explosions to the chemical enrichment of the interstellar medium. We recall how the metallicity dependence of the stellar winds implies a metallicity dependence of the stellar yields. We show that an increase of the initial angular velocity has different effects than an increase of the mass loss rates. Wolf-Rayet stars appear as important sources of 19F and 26Al. They are the favoured candidates for the 22Ne anomaly observed in the Galactic cosmic ray sources. They may also have injected into the proto-solar nebula short-lived radionuclides as 26Al, 36Cl, 41Ca, 107Pd and 205Pb.

Type
Part 2. Models for single star evolution of massive stars: wind + atmosphere + interior
Information
Symposium - International Astronomical Union , Volume 193: Wolf-Rayet Phenomena in Massive Stars and Starburst Galaxies , 1999 , pp. 218 - 226
Copyright
Copyright © Astronomical Society of the Pacific 1999 

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