Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1981
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981mnras.195.1001d&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 195, June 1981, p. 1001-1009.
Astronomy and Astrophysics
Astronomy
19
Aggregates, Collision Parameters, Computerized Simulation, Cosmic Dust, Comet Nuclei, Mass Distribution, Packing Density, Prediction Analysis Techniques, Radii, Cosmic Dust, Accretion, Computer Techniques, Simulations, Aggregates, Size, Micrometeorites, Comparisons, Particles, Comet Nuclei, Density, Distribution, Volume, Geometry, Diagrams, Models, Grains, Mass, Ice, Bennet Comet, Arend-Roland Comet, Characteristics
Scientific paper
This paper presents the results of a three-dimensional computer simulation of the growth of cosmic dust aggregates. The sphericity and packing fraction of the resulting dust aggregates are quantified as a function of size. Similarities are noticed between the aggregates so produced and micrometeorites found in the decay products of cometary nuclei. Using a mass distribution index of 1.73 for the accreting particles resulted in an aggregate with a mean volume packing fraction of about 0.25 + or - 0.1. This predicts an ice to dust mass ratio in cometary nuclei of about 1, a value similar to observed ratios.
Daniels P. A.
Hughes David W. W.
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