Leliwa-Kopystynski, J. and Burchell, M.J. and Lowen, D. (2008) Impact cratering and break up of the small bodies of the Solar System. Icarus, 195 (2). pp. 817-826. ISSN 0019-1035 .
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We consider the largest impact craters observed on small satellites and asteroids and the impact disruption of such bodies. Observational data are considered from 21 impact-like structures on 13 satellites and 8 asteroids (target body radii in the range 0.7-265 km). If the radius of the target body is R and the diameter of the largest crater observed on this body D, the ratio D/R is then the main observational parameter of interest. This is found on the observed bodies and compared to data obtained in the laboratory. Taking the largest observed value for D/R as a proxy for the ratio D-C/R (where D-C is the diameter of the largest crater that can be formed on a body without shattering it) it was found that for the observed icy satellites D-C,D-icy approximate to 1.2R and for the asteroids and the rocky satellites D-C,D-rocky approximate to 1.6R. In laboratory experiments with ice targets at impactor speeds of 1 to 3 km s(-1) we obtained D-C,D-icy approximate to 1.64R.
|Uncontrolled keywords:||asteroids; collisional physics; impact processes; asteroids, surfaces; satellites, surfaces|
|Subjects:||Q Science > QB Astronomy|
|Divisions:||Faculties > Science Technology and Medical Studies > School of Physical Sciences > Centre for Astrophysics and Planetary Sciences|
|Depositing User:||Jane Griffiths|
|Date Deposited:||26 Mar 2009 16:06|
|Last Modified:||26 Mar 2009 16:06|
|Resource URI:||http://kar.kent.ac.uk/id/eprint/15769 (The current URI for this page, for reference purposes)|
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