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The Mass Loss of the Main Asteroid Belt and Mars’ Zone Caused by the Impact of Solar Radiation and Jupiter: I: Numerical Calculations of the Dust Evolution
Ist Teil von
Solar system research, 2022-06, Vol.56 (3), p.183-190
Ort / Verlag
Moscow: Pleiades Publishing
Erscheinungsjahr
2022
Link zum Volltext
Quelle
Alma/SFX Local Collection
Beschreibungen/Notizen
—
The values of the mass of Mars and the asteroid belt are one and three orders of magnitude, respectively, less than those theoretically predicted from the extrapolation of the density of a solid component of the protoplanetary disk in the vicinity of Venus and the Earth. This study focuses on the mass erosion of zones of the asteroid belt and Mars, which is caused by sweeping dust particles out of this region under the influence of solar radiation and Jupiter’s gravitation. The dynamics of small particles produced by collisions of bodies in a region of 1 to 3.4 AU is considered. The analysis of the calculated orbits has shown that more than 10% of small dust particles (0.2–40 μm), which are produced, for example, in each of the collisions of asteroids, gain substantial orbital eccentricities under the impact of solar radiation; they are scattered by the gravitational field of Jupiter and leave the Solar System for ~(3 × 10
4
) years on average. This effect may explain a considerable mass loss of the asteroid belt and Martian zone. The effectiveness of sweeping dust particles from asteroids with weak gravity is confirmed by spaceborne images. As is seen in these images, the surface of small asteroids is speckled with stones, while the surface of the massive Moon is covered with fine dust, which is kept from escaping by the lunar gravitation.