Astronomy and Astrophysics – Astronomy
Scientific paper
Sep 2002
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002dps....34.2806h&link_type=abstract
American Astronomical Society, DPS Meeting #34, #28.06; Bulletin of the American Astronomical Society, Vol. 34, p.889
Astronomy and Astrophysics
Astronomy
Scientific paper
We present the results of an extensive numerical study of the motions of small bodies, ranging from 1 micron to 100 m in size, subject to the drag force and the gravitational attraction of an inhomogeneous circumstellar disk. In a recent paper, we have shown that it is possible for small bodies to undergo rapid migrations in the vicinity of the locations of the density enhancements of a hydrostatically stable nebula (Haghighipour and Boss, 2002, astro-ph-0207345). Our previous study was limited to the motions of solids on the midplane of such a disk. In this paper, we extend our analysis to three dimensional cases and we show that it is possible for small solid bodies to migrate rapidly (i,e, <1000 years) toward the location of a local concentration such as a spiral arm or a clump in a gravitationally unstable solar nebula. We also discuss the application of the results to the process of planetesimals formation.
Boss Alan P.
Haghighipour Nader
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