CAOSP abstracts, Volume: 44, No.: 1, year: 2014

Abstract: We study the dynamics of small bodies in the dissipating solar nebula during the era when Jupiter and Saturn were already formed and occupied mutual 3:2 mean-motion resonance. The study is done in the course to reveal the eventual sites of accumulation of material in the proto-planetary disk. Such an accumulation could significantly enhance the formation of the ice-giant cores. Actually, we found that the resonant action of Jupiter and Saturn in combination with the gas drag of the dissipating solar nebula may create two maxima in the distribution of solid material beyond Saturn, if the prevailing amount of the solids is concentrated in kilometer-sized or smaller bodies. Specifically, the distribution is then peaked at about ∼ 11 and ∼ 16.5 AU. A higher amount of solid material is in smaller bodies, the higher peaks occur. We suspect that the two maxima correspond to just two existing ice giants, Uranus and Neptune.