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Dust formation in hot stellar winds

Published online by Cambridge University Press:  07 August 2017

I. Cherchneff  and
A.G.G.M. Tielens
I. Cherchneff
Affiliation:
Royal Observatory, Blackford Hill, Edinburgh EH9 3HJ, U.K.
A.G.G.M. Tielens
Affiliation:
Space Sciences Division, NASA/Ames, Moffett Field, CA 94035, U.S.A.

Abstract

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WC-type Wolf-Rayet stars show episodic or persistent infrared emission attributed to amorphous carbon grains forming in their winds. The process of dust formation in the hydrogen-poor environments characteristic of WC winds is reviewed and compared to the chemical pathway to soot particle production in AGB stars. Emphasis is put on the formation of the dust precursors, and the physical conditions necessary to nucleate them in WC winds. In particular, it is concluded that dust formation around WC stars occurs in a dense, largely neutral, circumstellar disk.

Keywords

stars: Wolf-RayetAGBcircumstellar dustdust chemistry
Type
Session VI - Dust formation near Wolf-Rayet stars and other circumstellar phenomena
Information
Symposium - International Astronomical Union , Volume 163: Wolf-Rayet Stars: Binaries, Colliding Winds, Evolution , 1995 , pp. 346 - 354
Copyright
Copyright © Kluwer 1995 

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