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The Optical Properties of Circumstellar and Interstellar Dust in the Mid-IR

Published online by Cambridge University Press:  12 April 2016

B. Pegourie  and
R. Papoular
B. Pegourie
Affiliation:
CEN-Saclay, Service d’Astrophysique 91191 Gif-sur-Yvette, Cédex, France
R. Papoular
Affiliation:
CEN-Saclay, Service d’Astrophysique 91191 Gif-sur-Yvette, Cédex, France

Abstract

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We deduce the optical efficiency Q (λ)/ a of the circumstellar dust material over the range 8-30 μm from twelve M and G giants and supergiants and that of the dust present in the general ISM and molecular clouds from thirteen protostars. We then discuss the differences between these two profiles in the light of the condensation theory.

Type
IV. Optical Studies of Dust
Information
International Astronomical Union Colloquium , Volume 85: Properties and Interactions of Interplanetary Dust , 1985 , pp. 267 - 271
Copyright
Copyright © Reidel 1985

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