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Ring nebulae around moving Wolf-Rayet stars

Published online by Cambridge University Press:  07 August 2017

F. Brighenti  and
A. D'Ercole
F. Brighenti
Affiliation:
Dipartimento di Astronomia, Università di Bologna, Italy
A. D'Ercole
Affiliation:
Osservatorio Astronomico, Bologna, Italy

Abstract

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We present 2D numerical simulations of evolving ring nebulae around moving Wolf-Rayet stars. We have considered the interaction of the fast WR wind with the circumstellar matter modified by the previous action of the slow RSG wind. The resulting shell morphology is far from spherical and shows scallops due to several kinds of instabilities. The exact appearance of the ring nebula depends on the value of several parameters such as the unperturbed medium density and the velocity of the star.

Keywords

stars: Wolf-Rayetring nebulaehydrodynamics
Type
Session I - Basic parameters, properties of single Wolf-Ray et stars
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 70 - 71
Copyright
Copyright © Kluwer 1995 

References

Brighenti, F., D'Ercole, A. 1994, MNRAS in press Google Scholar
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Vishniac, E.T. 1983, ApJ 274, 152 Google Scholar