Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..50...55h&link_type=abstract
Astrophysics and Space Science, vol. 50, no. 1, Aug. 1977, p. 55-62.
Astronomy and Astrophysics
Astrophysics
2
Cosmic Dust, Cosmology, Granular Materials, Nebulae, Solar System, Equations Of Motion, Interstellar Matter, Runge-Kutta Method, Sediments, Stellar Envelopes
Scientific paper
The problem of the formation of a thin dust disk within a solar nebula is studied by means of numerical methods. The use of numerical methods, as opposed to a mathematical approach, means that a solution to the correct equation of motion can be attempted despite the absence of simplifying assumptions. Since the program is very time consuming, only one nebula mass was used in the investigation, although some current theories envision a massive nebula and others a small nebula. However, the numerical work seems to confirm the analytical work which, in turn, indicates that the carpet formation time is moderately independent of nebula mass. Increasing the mass increases the density and therefore the gravitational field, growth rate, and resistance. The first two accelerate the settling while the last slow it down, and these effects roughly cancel.
Handbury M. J.
Williams Iwan P.
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