A comparison of nucleus surface models to space observations of Comet Halley

Details A comparison of nucleus surface models to space observations of Comet Halley A comparison of nucleus surface models to space observations of Comet Halley

Dec 1986

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986esasp.249..181i&link_type=abstract

In ESA Proceedings of an ESA Workshop on the Comet Nucleus Sample Return Mission p 181-184 (SEE N87-25109 18-90)

Astronomy and Astrophysics

Astronomy

4

Astronomical Models, Halley'S Comet, Spaceborne Astronomy, Surface Properties, Cosmic Dust, Gas Flow, Giotto Mission, Outgassing, Vega Project

Scientific paper

Spacecraft observations of comet Halley revealed that the surface structure of its nucleus is highly complex with localized regions as major suppliers of sublimating gas flow while the main part is covered by a dust layer. A synthesis of published results and existing theoretical models suggests that the nucleus surface of comet Halley may be characterized by the presence of a number of (nearly) dust-free spots with integral areas amounting to 20% to 30% of the hemispherical area. A few percent of the surface area constitutes an outgassing network distributed uniformly over the entire surface. The third component is the background regions covered by dust mantle with an effective thickness of a few cm.

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