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Composition and Optical Properties of Cometary Dust

Published online by Cambridge University Press:  27 February 2018

Martha S. Hanner
Martha S. Hanner*
Affiliation:
Jet Propulsion Laboratory, California Institute of Technology, Pasadena California 91109

Abstract

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Comet dust consists primarily of silicate and carbonaceous material. The carbonaceous material is not yet well-characterized. The 3.36 μm emission feature arises primarily from gas phase molecules, while a small feature at 3.29 μm may be due to aromatic hydrocarbons in the grains. Olivine, a high temperature condensate, is present in some comets. Polarization and albedo maps have shown that the coma is not uniform; an inner halo of large particles may be present.

Type
X. Cometary Dust
Information
International Astronomical Union Colloquium , Volume 150: Physics, Chemistry and Dynamics of Interplanetary Dust , 1996 , pp. 367 - 376
Copyright
Copyright © Astronomical Society of the Pacific 1996

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