Astronomy and Astrophysics – Astrophysics
Scientific paper
Jul 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974ap%26ss..29...51d&link_type=abstract
Astrophysics and Space Science, vol. 29, July 1974, p. 51-59.
Astronomy and Astrophysics
Astrophysics
3
Astronomical Models, Collision Parameters, Mass Distribution, Monte Carlo Method, Planetary Evolution, Coalescing, Planetary Mass, Planetary Rotation, Planetology, Solar System, Time Response
Scientific paper
The mass distribution of protoplanets is studied by a Monte Carlo technique. It is assumed that the bodies coalesce in collision and that their self-gravitation is important. It is found that over most of the mass range the distribution is inversely proportional to the mass raised to the q-th power, with q tending to approximately 1.8. However, there is an overabundance of large masses relative to the power law: in particular, the simulations indicate the growth of a large nucleus which progressively dominates the growth process. It is also found that the axial inclinations of the planets are best explained if they grew out of a coagulating medium comprising planetesimals with random velocities of about 5 km/sec and masses up to 0.01 of the embryo masses. The inclinations of the giant planets are consistent with a floccule-type origin of these bodies.
Dodd Robert J.
Napier Mcd. W.
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