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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-consistentlyExpand
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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 theExpand
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Detection of Water in the LCROSS Ejecta Plume
Watering the Moon About a year ago, a spent upper stage of an Atlas rocket was deliberately crashed into a crater at the south pole of the Moon, ejecting a plume of debris, dust, and vapor. The goalExpand
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Impact origin of the Vesta family
— 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 perceivedExpand
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Simulations of brittle solids using smooth particle hydrodynamics
Abstract We describe a version of the smooth particle hydrodynamics (SPH) method suitable for modeling solids. The model includes strength and implements a von Mises yielding relation for stressesExpand
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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 toExpand
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Mechanical and geological effects of impact cratering on Ida
Asteroids respond to impact stresses differently from either laboratory specimens or large planets. Gravity is typically so small that seismic disturbances of a few cm s−1can devastate unconsolidatedExpand
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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 lateExpand
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Dynamic fragmentation in impacts: Hydrocode simulation of laboratory impacts
Impacts into solids are invariably accompanied by the abundant formation of cracks and fragments created by crack linkage. In contrast to the dominantly compressive nature of impact-generated stressExpand
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Critical crater diameter and asteroid impact seismology
If impact stress reverberation is the primary gradational process on an asteroid at global scales, then the largest undegraded crater records an asteroid's seismological response. The critical craterExpand
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