Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989icar...82..225m&link_type=abstract
Icarus (ISSN 0019-1035), vol. 82, Dec. 1989, p. 225-243.
Astronomy and Astrophysics
Astronomy
23
Accretion Disks, Astronomical Models, Planetary Evolution, Protoplanets, Constraints, Meteorites, Solar Corona, Solar System, Star Formation, Viscous Flow
Scientific paper
The present consideration of the protosolar viscous accretion disk concept proceeds on the basis of a simple model whose disk-evolution and property-controlling parameters can be easily varied, in order to evaluate the effects of four possible constraints on the solar nebula: (1) a 'planet-formation' constraint; (2) a 'meteoritic' constraint; (3) an 'astronomical' constraint; and (4) a 'physical' constraint. It is found that all four cannot be simultaneously accommodated, and that the accretion-stage disks are too small in relation to the planetary system; it is concluded that planet formation largely occurred during a disk-evolution phase after the end of infall events.
Morfill Gregor E.
Wood John A.
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