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arXiv 1804.04070astro-ph.EP
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联系行星组成与形成

Connecting Planetary Composition with Formation

Ralph E. Pudritz, Alex J. Cridland, Matthew Alessi

摘要:

对不同系外行星群的观测、对它们的宿主恒星的描述及其与行星系性质的联系、对原行星盘的详细研究以及对我们太阳系中大质量行星的内部和组成的实验研究的迅速进展,为行星形成理论中的下一个大问题提供了坚实的基础。行星的元素和化学成分与它们的形成有什么联系?要解决这个问题,就需要将行星形成理论的各个部分联系在一起,形成一个能够处理这些大型数据集的端到端的图景。在这篇评论中,我们讨论了这样一个图片的关键要素,以及它们如何影响形成行星的化学和元素组成。这里的重要问题包括初始状态的形成和发展的磁盘,化学和尘埃过程中,行星的迁移和行星陷阱的重要性,角动量运输过程涉及湍流和/或MHD磁盘风的性质,行星形成理论,和先进的磁盘天体化学治疗。所有这些问题都影响着由宿主恒星的X射线电离驱动的盘的化学性质,并受到其影响。我们将讨论这些过程如何导致一个连贯的端到端模型,以及如何解决基本问题。

英文摘要:

The rapid advances in observations of the different populations of exoplanets, the characterization of their host stars and the links to the properties of their planetary systems, the detailed studies of protoplanetary disks, and the experimental study of the interiors and composition of the massive planets in our solar system provide a firm basis for the next big question in planet formation theory. How do the elemental and chemical compositions of planets connect with their formation? The answer to this requires that the various pieces of planet formation theory be linked together in an end-to-end picture that is capable of addressing these large data sets. In this review, we discuss the critical elements of such a picture and how they affect the chemical and elemental make up of forming planets. Important issues here include the initial state of forming and evolving disks, chemical and dust processes within them, the migration of planets and the importance of planet traps, the nature of angular momentum transport processes involving turbulence and/or MHD disk winds, planet formation theory, and advanced treatments of disk astrochemistry. All of these issues affect, and are affected by the chemistry of disks which is driven by X-ray ionization of the host stars. We discuss how these processes lead to a coherent end-to-end model and how this may address the basic question.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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