Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998baas...30.1451r&link_type=abstract
American Astronomical Society, DPS meeting #30, #55.P23; Bulletin of the American Astronomical Society, Vol. 30, p.1451
Astronomy and Astrophysics
Astronomy
Scientific paper
One of remarkable features of the solar system is a deficit of mass in outer region of the terrestrial planets. This region extends from Mars through the asteroid belt, in which the average surface density of solid material is thousands times lower than expected if the surface density decreases smoothly with the distance from the Sun. Different attempts were suggested to explain the deficit of mass in this region. Most of them suggested that the asteroid belt has been cleared under the gravitational effect of Jupiter. In this paper I suggest a new idea: the decreasing of the surface density of solid material in Mars - asteroid region began earlier - at a stage when the nebula gas has at least partialy dissipated in the inner part of terrestrial planets but not at the distance of Jupiter. In this case, the gas pressure might be minimal in the region of asteroid belt or grow outward. Planetesimals would migrate outward under the effect aerodynamic drag in a region with sufficiently large positive pressure gradient. This mass flux is unlikely to be replenished from the inward where planetesimal accumulation is faster, and therefore they has grown large enough to be less affected to the radial drift. This mechanism also enriches the region of Jupiter formation with condensible material.
No associations
LandOfFree
Affect of Gas Dissipation on Planetesimal Growth in Asteroid Region does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Affect of Gas Dissipation on Planetesimal Growth in Asteroid Region, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Affect of Gas Dissipation on Planetesimal Growth in Asteroid Region will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1000041