极端行星系统中可居住的行星形成：多星和/或多行星系统
Habitable Planet Formation in Extreme Planetary Systems: Systems with Multiple Stars and/or Multiple Planets
摘要：
了解太阳系外行星系统中可居住行星的形成和动力学演化是一项具有挑战性的任务。在这方面，有多颗巨行星和/或多颗恒星的系统会带来特殊的复杂性。在这些环境中，适居行星的形成受到其巨行星和/或其恒星同伴的动力学的强烈影响。这些天体对形成类地行星的星子和原行星天体盘的结构有着深远的影响。现有的行星形成理论在多大程度上适用于这种“极端”的行星系统取决于它们的行星和/或双星的动力学特征。在本文中，我提出的研究结果的可能性存在的类地物体的系统中的多个巨行星（即Uppermandromedae，47 UMa，GJ 876，和55 Cnc）和讨论的动力学新发现的海王星大小的对象在55 Cnc系统。我还将审查可居住的行星形成的双星系统，并提出了一个系统的搜索结果的参数空间，类地物体可以形成和维持长期稳定的轨道在宜居带的双星。
英文摘要：
Understanding the formation and dynamical evolution of habitable planets in extrasolar planetary systems is a challenging task. In this respect, systems with multiple giant planets and/or multiple stars present special complications. The formation of habitable planets in these environments is strongly affected by the dynamics of their giant planets and/or their stellar companions. These objects have profound effects on the structure of the disk of planetesimals and protoplanetary objects in which terrestrial-class planets are formed. To what extent the current theories of planet formation can be applied to such "extreme" planetary systems depends on the dynamical characteristics of their planets and/or their binary stars. In this paper, I present the results of a study of the possibility of the existence of Earth-like objects in systems with multiple giant planets (namely Upsilon Andromedae, 47 UMa, GJ 876, and 55 Cnc) and discuss the dynamics of the newly discovered Neptune-size object in 55 Cnc system. I will also review habitable planet formation in binary systems and present the results of a systematic search of the parameter-space for which Earth-like objects can form and maintain long-term stable orbits in the habitable zones of binary stars.
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