Liou JC, Malhotra R
J.-C. Liou, SN3, NASA Johnson Space Center, Houston, TX 77058, USA. R. Malhotra, Lunar and Planetary Institute, Houston, TX 77058, USA.
Science. 1997 Jan 17;275(5298):375-7. doi: 10.1126/science.275.5298.375.
During the early history of the solar system, it is likely that the outer planets changed their distance from the sun, and hence, their influence on the asteroid belt evolved with time. The gravitational influence of Jupiter and Saturn on the orbital evolution of asteroids in the outer asteroid belt was calculated. The results show that the sweeping of mean motion resonances associated with planetary migration efficiently destabilizes orbits in the outer asteroid belt on a time scale of 10 million years. This mechanism provides an explanation for the observed depletion of asteroids in that region.
在太阳系早期历史中，外行星很可能改变了它们与太阳的距离，因此，它们对小行星带的影响随时间而演变。计算了木星和土星对外部小行星带中小行星轨道演化的引力影响。结果表明，与行星迁移相关的平均运动共振的扫掠在1000万年的时间尺度上有效地破坏了外部小行星带中的轨道。这种机制为该区域观测到的小行星损耗提供了解释。
