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New massive close binary models and the 26Al yield of the WR component of γ VEL

Published online by Cambridge University Press:  07 August 2017

H. Braun  and
N. Langer
H. Braun
Affiliation:
MPI für Astrophysik, Karl-Schwarzschild-Straße 1, D-85740 Garching, B.R. Deutschland
N. Langer
Affiliation:
MPI für Astrophysik, Karl-Schwarzschild-Straße 1, D-85740 Garching, B.R. Deutschland

Abstract

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We present new models of massive close binary evolution, using an up-to-date hydrodynamic binary code which includes time dependent mixing of chemical species in the stellar interior, and nuclear reaction networks for the CNO cycles as well as for the NeNa and MgAl cycles. Some of our models, tailored to fit γ Vel, provide for the first time detailed results for the production and ejection of 26A1 into the interstellar medium by WR binaries. From our results one can estimate the contribution of WR stars to the amount of 26Al presently seen in the Milky Way by γ-ray satellites.

Type
Session V - Stellar winds and massive binary evolution
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 305 - 308
Copyright
Copyright © Kluwer 1995 

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