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The Dust in the Coma of Comet Halley

Published online by Cambridge University Press:  12 April 2016

Joniek I. Hage  and
J. Mayo Greenberg
Joniek I. Hage
Affiliation:
Laboratory Astrophysics, University of LeidenP.O. Box 9504 2300RA LeidenThe Netherlands
J. Mayo Greenberg
Affiliation:
Laboratory Astrophysics, University of LeidenP.O. Box 9504 2300RA LeidenThe Netherlands

Abstract

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The interstellar dust model of comets is numerically worked out to satisfy several basic constraints provided by observations of comet Halley and to derive the porosity of coma dust. The observational constraints are: (1) the strengths of the 3.4 μm and 9.7 μm emission bands; (2) the relative amount of silicates to organic materials; (3) the mass distribution of the dust. The results indicate that coma dust has a porosity in the range 0.93 < P < 0.975. Preliminary calculations concerning the observed linear polarization of comet Halley are presented.

Type
Cometary Dust: Observations and Evolution
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 261 - 264
Copyright
Copyright © Kluwer 1991

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