When the dust settles - Fractal aggregates and planetesimal formation

Details When the dust settles - Fractal aggregates and planetesimal formation When the dust settles - Fractal aggregates and planetesimal formation

Mar 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997lpi....28.1517w&link_type=abstract

Conference Paper, 28th Annual Lunar and Planetary Science Conference, p. 517.

Astronomy and Astrophysics

Astronomy

4

Planetary Evolution, Fractals, Astronomical Models, Planetary Mass, Space Density, Gravitational Collapse, Solar Corona, Aggregates, Computerized Simulation

Scientific paper

In order to investigate the issue of fractal aggregates and the formation of planetesimals, coagulation and settling were simulated in a standardized case with different assumptions as to fractal dimension and size range for which aggregates have fractal properties. With one exception, all simulations reached critical density in the central plane within a few thousand years. For D of 1.95 and limiting size of 1 cm, settling was slowed so that the peak density in the central plane reached 0.75 times critical at 3500 y.

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