Signatures of the Giant Planets Imprinted on the Edgeworth-Kuiper Belt Dust Disk
Signatures of the Giant Planets Imprinted on the Edgeworth-Kuiper Belt Dust Disk
复制标题
印在埃奇沃斯-柯伊伯带尘埃盘上的巨行星的签名
DOI：
10.1086/300938
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发表时间：
1999
期刊：
影响因子：
--
通讯作者：
H. Zook
中科院分区：
文献类型：
--
作者：
J. Liou;H. Zook
探测太阳系外行星系统的一种方法是通过观测到的星周尘埃盘来推断行星的扰动。我们的太阳系，其已知的行星配置，提供了一个很好的例子来研究如何在埃奇韦尔-柯伊伯带（EKB）尘埃盘中的尘埃分布受到多个不同行星存在的影响。对EKB天体尘埃粒子轨道演化的数值模拟表明，海王星通过在平均运动共振中捕获尘埃粒子，沿其轨道沿着形成环状结构。木星和土星通过从太阳系喷射尘埃粒子，在10个Au内产生了一个径向亮度分布，这与没有它们扰动的尘埃盘的亮度分布完全不同。另一方面，天王星和类地行星并没有在EKB尘埃盘上产生显著的特征。如果从远处观察，我们的太阳系将被认为是一个至少有两颗行星的系统。
One method to detect extrasolar planetary systems is to deduce the perturbations of planets on the observed circumstellar dust disks. Our solar system, with its known configuration of planets, provides an excellent example to study how the distribution of dust in the Edgeworth-Kuiper belt (EKB) dust disk is affected by the existence of multiple and different planets. Numerical simulations of the orbital evolution of dust particles from EKB objects show that Neptune, by trapping dust particles in mean motion resonances, creates a ringlike structure along its orbit. Jupiter and Saturn, by ejecting dust particles from the solar system, create a radial brightness profile inside 10 AU that is quite different from that of a dust disk without their perturbations. On the other hand, Uranus and the terrestrial planets do not produce significant signatures on the EKB dust disk. Our solar system would be recognized as a system with at least two planets if observed from afar.