Statistics – Computation
Scientific paper
May 1985
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1985icar...62..319c&link_type=abstract
Icarus (ISSN 0019-1035), vol. 62, May 1985, p. 319-327.
Statistics
Computation
23
Accretion Disks, Earth-Moon System, Lunar Evolution, Planetary Evolution, Protoplanets, Angular Momentum, Collisions, Computational Astrophysics, Hydrodynamics, Particle In Cell Technique, Moon, Formation, Accretion, Disk, Origin, Hypotheses, Angular Momentum, Earth-Moon Sytem, Collisions, Impacts, Mass, Size, Simulations, Models, Techniques, Hydrodynamics, Parameters, Velocity, Orbits, Ellipicity
Scientific paper
Considerations related to the angular momentum of the earth-moon system have led Ward and Cameron (1978) to the suggestion of a collisional origin of the moon. The required projectile would be about the mass of Mars (i.e., about 0.1 earth masses). The possibility has been considered that both the proto-earth and the projectile would be remnants of the formation of giant gaseous protoplanets. Processes of lunar formation studied take into account the viscous dissipation of an accretion disk. The present paper is concerned with the formation of the prelunar accretion disk. The hydrodynamics of a compressible viscous gas are simulated with the aid of the particle-in-cell method. The obtained results imply that the projectile is in an elliptical earth-crossing orbit.
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