The organic matter of comet Halley as inferred by joint gas phase and solid phase analyses |
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Authors: | Franz R Krueger Axel Korth Jochen Kissel |
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Institution: | (1) Ing.-Büro Krueger, Messelerstr.24, D-6100 Darmstadt 12, Germany;(2) Max-Planck-Institut für Aeronomie, Postfach 20, D-3411 Katlenburg-Lindau, Germany;(3) Max-Planck-Institut für Kernphysik, Postfach 103980, D-6900 Heidelberg, Germany |
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Abstract: | During encounters with comet Halley, the experiment PICCA onboard GIOTTO measured the gas phase organic ion composition of the coma and the experiment PUMA onboard VEGA-1 measured the dust composition. Joining both results, we obtain a consistent picture of the parent organic matter from which dust and gas is produced. One recognizes a complex unsaturated polycondensate, which splits during coma-formation into the more refractory C=C,C-N-containing dust part, and the more volatile C=C,C-O-containing gas part. The responsible exothermal chemical reactions, which are triggered by the sunlight, may play a major role in the dynamics of coma formation.This paper is a shortened and upgraded version of Krueger, F.R., Korth, A., and Kissel, J.: 1989, in S. Chang (ed.) Proc. of the ROSETTA Conf., Milpitas CA, January 1989, submitted. |
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