Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-25T15:59:39.835Z Has data issue: false hasContentIssue false

Surface Morphology of Cometary Nuclei

Published online by Cambridge University Press:  12 April 2016

D. Möhlmann
Affiliation:
Institut für KosmosforschungRudower Chaussee 5Berlin—AdlershofDDR —1199
E. Kührt
Affiliation:
Institut für KosmosforschungRudower Chaussee 5Berlin—AdlershofDDR —1199

Abstract.

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The first in situ observations of a cometary nucleus by imaging techniques on board the VEGA and Giotto spacecraft in 1986 opened the possibility of directly studying the properties and structures of a cometary surface. This new information, combined with results from other experiments made by these spacecraft and with results from laboratory experiments and Earth-bound radar observations, gave a better basis for coming from speculation to more precise knowledge in describing properties of cometary surfaces and related activity. It is the aim of this paper to discuss the different views developed to understand properties of cometary surfaces and to propose a consistent model for understanding topological surface properties and related cometary activity. We accomplish this by extending former hypotheses and approaches and making them more precise in the light of the new and more complex data.

Type
Section IV: The Cometary Nucleus
Copyright
Copyright © Kluwer 1991

References

Banaszkiewicz, M., et al. (1989). “Dynamics of large dust grains around Halley’s comet,” this volume.Google Scholar
Brin, G.D., and Mendis, D.A. (1979). Astrophys. J. 229, 402.Google Scholar
Campbell, D.B., et al. (1989). “Radar observations of comet Halley,” Ap. J. 338, 10941105.Google Scholar
Colwell, J.E., and Jakosky, B.M. (1987). “Evolution of topography on a comet,” Icarus 72, 128134.Google Scholar
Curdt, W., and Keller, H.U. (1989). “Large dust particle fluence along the Giotto trajectory,” poster presented at the Bamberg meeting.Google Scholar
Fanale, F.P., and Salveil, J.R. (1984), Icarus 72, 123.Google Scholar
Grün, E., et al. (1989). “Modifications of comet materials by the sublimation process: Results from simulation experiments,” Proceedings of Workshop “Analysis of Returned Comet Nucleus Samples.Google Scholar
Harmon, J.K., et al. (1989). “Radar observations of comet IRAS-Araki-Alcock 1983d,” Ap. J. 338, 10711093.Google Scholar
Horanyi, M., and Kecskemety, K. (1982). In Cometary Exploration, Hung. Acad. Sci., p. 59.Google Scholar
Houpis, H.L.F. (1987). “Models of cometary nuclei,” in Comet Halley 1986—Worldwide Investigations, Results and Interpretations, A. Horwood, England.Google Scholar
Keller, H.U., et al. (1986). “Observations by the Halley multi-colour camera,” ESA SP-250, Vol. II, 347350.Google Scholar
Kührt, E., et al. (1986). “Thermal stresses and dust dynamics on comets,” ESA SP-250, Vol. II, 385388.Google Scholar
Mendis, D.A., and Brin, G.D. (1977). Moon and Planets 17, 359.Google Scholar
Möhlmann, D., et al. (1986). “Physical properties of P/Halley—derived from VEGA-images,” ESA SP-250, Vol. II, 339340, and “Image processing of VEGA-TV observations,” ESA SP-250, Vol. III, 313315.Google Scholar
Möhlmann, D., and Kührt, E. (1989). “Comet nucleus models,” Adv. Space Res. 9 (3), (3)17-(3)23.Google Scholar
Prialnik, D., and Bar-Nun, A. (1988). “The formation of a permanent dust mantle and its effect on cometary activity,” Icarus 69, 8390.Google Scholar
Reitsema, H.J., et al. (1986). “Nucleus morphology of comet Halley,” ESA SP-250, Vol. II, 351354.Google Scholar
Sekanina, Z., and Larson, S.M. (1984). Astron. J. 89, 1408 and 1446, and (1986), Astron. J. 92, 462.Google Scholar
Shulman, E.M. (1972). In The Motion, Evolution of Orbits and Origin of Comets, D. Reidel, Dordrecht, p. 265.Google Scholar
Wallis, M.K., and Wickramasinghe, N.C. (1987). “Crustal models of the evolving comet nucleus,” ESA SP-278, 495499.Google Scholar
Weissman, P.R. (1986). “How pristine are cometary nuclei?”, ESA SP-249, 1525.Google Scholar
Whipple, F.L. (1950), Astron. J. 111, 375.CrossRefGoogle Scholar
Whipple, F.L. (1978), Moon and Planets 18, 343.Google Scholar