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Circumstellar Carbonaceous Material Associated with Late-Type Dusty WC Wolf-Rayet Stars

Published online by Cambridge University Press:  19 September 2017

Jean E. Chiar ,
A.G.G.M. Tielens  and
E. Peeters
Jean E. Chiar
Affiliation:
NASA-Ames Research Center, Mail Stop 245-3, Moffett Field, CA 94035, USA and SETI Institute
A.G.G.M. Tielens
Affiliation:
Kapteyn Institute/SRON, Groningen, NL
E. Peeters
Affiliation:
Kapteyn Institute/SRON, Groningen, NL

Abstract

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Our own solar system and other planetary systems are composed of organic dust created in the outflows in dying stars. Here, we examine an unlikely source of carbonaceous material in interstellar space, the harsh environment of Wolf-Rayet (WR) stars. We have used spectroscopic data from the Short Wavelength Spectrometer on the Infrared Space Observatory to examine infrared emission and absorption features in the 6 to 9 μm spectral region of hot massive WC-type WR stars. We conclude that these features are due to amorphous carbon dust in their circumstellar environment.

Type
Astrochemistry
Information
Symposium - International Astronomical Union , Volume 213: Bioastronomy 2002: Life Among the stars , 2004 , pp. 193 - 196
Copyright
Copyright © Astronomical Society of the Pacific 2004 

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