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Material Processing of Interstellar Dust in Comets

Published online by Cambridge University Press:  30 March 2016

Hiroshi Kimura  and
Ingrid Mann
Hiroshi Kimura
Affiliation:
Institut für Planetologie, Westfälische Wilhelms- Universität, Wilhelm-Klemrn-Straβe 10, D-48149, Münster, Germany
Ingrid Mann
Affiliation:
Institut für Planetologie, Westfälische Wilhelms- Universität, Wilhelm-Klemrn-Straβe 10, D-48149, Münster, Germany

Abstract

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To better understand the processing of pristine materials in comets, we compare the composition of cometary and interstellar dust. We suggest that the deficit of N in comet dust bears evidence for the processing of the organic refractory mantle of pre-solar interstellar dust, unless it arises from the protosolar disk chemistry. The amorphous silicate core, in contrast, seems to be protected against processing due to the presence of the organic refractory mantle.

Type
I. Joint Discussions
Information
Highlights of Astronomy , Volume 13 , 2005 , pp. 485 - 487
Copyright
Copyright © Astronomical Society of Pacific 2005

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