Astronomy and Astrophysics – Astronomy
Scientific paper
Mar 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990mnras.243..312h&link_type=abstract
Monthly Notices of the Royal Astronomical Society (ISSN 0035-8711), vol. 243, March 15, 1990, p. 312-319.
Astronomy and Astrophysics
Astronomy
5
Density Distribution, Meteoroids, Solar System, Space Density, Spatial Distribution, Halley'S Comet, Interplanetary Dust, Orbital Mechanics, Particle Collisions, Solar System, Meteoroids, Density, Size, Dust, Distribution, Models, Orbits, Short-Period Comets, Parent Bodies, Distance, Clouds, Shape, Numerical Methods, Interplanetary Dust, Thickness, Quadrantids, Mass, Particles, Spacecraft Observations, Satellite Observations
Scientific paper
The interplanetary dust cloud contains many large (m greater than 0.001 g) meteoroids. The majority of these have orbits that are similar to those of their parent comets. This paper models the dust distribution around the orbits of the 135 short-period comets that have been seen in the inner solar system. These distributions are then integrated in a single direction to provide a realistic indication of the way in which the spatial density of these large meteoroids varies as a function of the ecliptic heliocentric distance. The distribution perpendicular to the ecliptic is also modeled. The dust cloud is found to be shaped like a wide torus which, in the main, extends from 1.0 to 5.6 AU. The density in the inner regions of this torus is about twice what it is in the outer regions. The thickness of the torus is of the order of 1.2 AU.
Hughes David W. W.
McBride Neil
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