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Circumstellar dust shells around WN10-11 and WC8-10 stars: An evolutionary sequence?∗

Published online by Cambridge University Press:  04 August 2017

K.A. van der Hucht ,
P.M. Williams  and
P.S. Thé
K.A. van der Hucht
Affiliation:
Space Research Laboratory, Utrecht, The Netherlands
P.M. Williams
Affiliation:
The Royal Observatory Edinburgh, UK and United Kingdom Infrared Telescope Unit, Hilo, Hawaii, USA
P.S. Thé
Affiliation:
Astronomical Institute ‘Anton Pannekoek’, Amsterdam, The Netherlands

Abstract

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In a recent IR photometric survey of late-type WC and WN stars, it was discovered that not only most WC8-10 stars have circumstellar dust shells, but that two extreme late-type WN stars also have strong IR excesses from circumstellar dust. The latter shells appear to have significantly different density distributions. In this paper the possibility of an evolutionary sequence is suggested.

Type
II. EVOLUTION OF MASSIVE STARS EVOLUTION AND MODELS
Information
Symposium - International Astronomical Union , Volume 105: Observational Tests of the Stellar Evolution Theory , 1984 , pp. 273 - 277
Copyright
Copyright © Reidel 1984 

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