太阳辐射云的动力学
Dynamics of Exozodiacal Clouds
摘要：
内太阳系包含一团小尘埃（1-100微米），是小行星、彗星和柯伊伯带天体碰撞和释气时产生的。这个尘埃云，黄道带云可能有太阳系外的类似物，黄道带外云。太阳辐射云与碎片盘有关，围绕主序星运行的岩石和尘埃云被认为是行星形成后留下的碎片。有些碎片盘似乎含有明显的内部云，可以认为是大质量的外黄道云（例如Koerner等人，1998年; Absil等人，2006年）。本白皮书解决了未来理论工作的需要外黄道云的动力学。这项理论工作应该有助于我们发现新的行星，并理解作为天体物理噪声的系外黄道带云。到目前为止，对附近恒星的观测还没有提供很好的约束外黄道光云的结构。但未来的观测可能需要对这些系统有更好的理论理解。
英文摘要：
The inner Solar System contains a cloud of small (1-100 micron) dust grains created when small bodies-asteroids, comets, and Kuiper belt objects-collide and outgas. This dust cloud, the zodiacal cloud probably has extrasolar analogs, exozodiacal clouds. Exozodiacal clouds are related to debris disks, clouds of rocks and dust orbiting main sequence stars thought to represent the debris left over from planet formation. Some debris disks appear to contain distinct inner clouds that could be considered massive exozodiacal clouds (e.g. Koerner et al. 1998, Absil et al. 2006). This white paper addresses the need for future theoretical work on the dynamics of exozodiacal clouds. This theoretical work should help us discover new planets and understand exozodiacal clouds as astrophysical noise. So far, observations of nearby stars have not provided good constraints on the structures of exozodiacal clouds. But future observations probably will demand a better theoretical understanding of these systems.
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