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Catastrophic Disruptions Revisited
Abstract We use a smooth particle hydrodynamics method to simulate colliding rocky and icy bodies from centimeter scale to hundreds of kilometers in diameter in an effort to define self-consistently…
Structure of Comet Shoemaker-Levy 9 Inferred from the Physics of Tidal Breakup
Abstract Detailed consideration of possible fragmentation mechanisms shows that Comet Shoemaker–Levy 9 (SL9) had negligible effective strength, even in comparison with tide and self-gravity, by the…
Impact origin of the Vesta family
- E. Asphaug
- 1 November 1997
Abstract— The compelling petrographic link (Consolmagno and Drake, 1977; Gaffey, 1983) between basaltic achondrite meteorites and the ∼530 km diameter asteroid 4 Vesta has been tempered by a…
Density of comet Shoemaker–Levy 9 deduced by modelling breakup of the parent 'rubble pile'
FOR a week beginning 16 July 1994, fragments of comet Shoemaker-Levy 9 will collide with Jupiter each day. Although the fragments are probably smaller than originally estimated1, the impacts may…
Similar-sized collisions and the diversity of planets
- E. Asphaug
- Geology, Physics
Simulations of brittle solids using smooth particle hydrodynamics
Mega-impact formation of the Mars hemispheric dichotomy
This work presents a set of single-impact initial conditions by which a large impactor can produce features consistent with the observed dichotomy’s crustal structure and persistence, with trends more pronounced or unseen in commonly studied smaller impacts.
Accretion Efficiency during Planetary Collisions
We present the results of smoothed particle hydrodynamic simulations of collisions between two 0.10 M⊕ differentiated planetary embryos with impact dynamics that are thought to be common to the late…
Hit-and-run planetary collisions
It is shown that colliding planets do not simply merge, as is commonly assumed, and in many cases, the smaller planet escapes from the collision highly deformed, spun up, depressurized from equilibrium, stripped of its outer layers, and sometimes pulled apart into a chain of diverse objects.
Impact Simulations with Fracture. I. Method and Tests
Abstract We describe a new numerical tool based on the smooth particle hydrodynamics (SPH) method which is aimed at modeling impacts and collisions involving small solid objects. Our goal is to…