Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983acasn..24..351y&link_type=abstract
(Acta Astronomica Sinica, vol. 24, no. 1, 1983, p. 351-361) Chinese Astronomy and Astrophysics (ISSN 0275-1062), vol. 8, June 19
Astronomy and Astrophysics
Astrophysics
Cosmic Dust, Evolution (Development), Solar System, Thickness, Gravitational Fields, Nebulae, Stability
Scientific paper
The dynamical processes occurring in the solar nebular dust field in the last stages just as the gravitational instability sets in are explored analytically. It is assumed that a critical thickness was attained and the instability produced movement in the radial direction. The height of the dust layer at the onset of gravitationally-induced sinking is estimated and a model is defined for an infinitely thin dust layer. Gas in the dust layer is hypothesized to have had sufficient turbulent energy to offset gravity, thereby offering resistance to the particle motion. The time scale of the evolution of the nebular ring is calculated and found to be shorter than the sinking time.
Yue Zeng-Yuan
Zhang Baigang
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