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Bare Carbon/Silicate Theories

Published online by Cambridge University Press:  23 September 2016

John S. Mathis
John S. Mathis*
Affiliation:
Washburn Observatory, The University of Wisconsin-Madison Madison, Wisconsin 53706, U. S. A.

Abstract

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Several theories involving bare silicate grains, combined with carbon in either amorphous or graphitic form, are discussed and contrasted to the other grain theories outlined at this Symposium. The assumption of bare grains is justified, and power-law size distributions are strongly indicated from both theoretical and observational standpoints. Various successes and problems of these and other theories are discussed. All of the theories discussed in this Symposium can probably explain the observed extinction and polarization in general terms, but certain crucial observations, such as the wavelength behavior of the polarization and extinction in the wavelength range near the strong silicate absorption bands, will probably be able to discriminate among them.

Type
Section VI: Interstellar Dust Models
Information
Symposium - International Astronomical Union , Volume 135: Interstellar Dust , 1989 , pp. 357 - 365
Copyright
Copyright © Kluwer 1989 

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