publication . Article . 1988

Collisional stripping of Mercury's mantle

A. G. W. Cameron; W. L. Slattery; W. Benz;
Open Access
  • Published: 01 Jun 1988 Journal: Icarus, volume 74, pages 516-528 (issn: 0019-1035, Copyright policy)
  • Publisher: Elsevier BV
Abstract
Abstract We investigated the conditions under which a giant collision between a hypothetical proto-Mercury and a planet one-sixth its mass would result in the loss of most of the silicate mantle of the planet, leaving behind an iron-rich planet and thus explaining the anomalously high density of Mercury. We carried out a series of numerical simulations using our three-dimensional smoothed particle hydrocode, varying the impact parameter and the relative velocity between the planet and impactor. We demonstrate that the details of the equation of state do not play an important role. We show that a head-on collision at 20 km/sec and an off-axis (impact parameter eq...
Subjects
arXiv: Astrophysics::Earth and Planetary AstrophysicsPhysics::Space Physics
free text keywords: Planet, Protoplanet, Equation of state, Impact parameter, Planetary core, Astrophysics, Mantle (geology), Ejecta, Astronomy, Physics, Collision
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