arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 1402.1085astro-ph.EP
收藏

银河系行星科学

Galactic planetary science

Giovanna Tinetti

摘要:

我们太阳系边界以外的行星科学今天还处于起步阶段。直到几十年前,对行星性质的详细研究还仅限于柯伊伯带内的天体。今天,我们不能忽视已知行星的数量已经增加了两个数量级,也不能忽视这些行星与我们太阳系中的物体不同。这一事实究竟是由用于发现新行星的技术(主要是径向速度和凌日)引起的选择偏差的结果,还是仅仅证明了太阳系在银河系中是罕见的,我们还不知道。不过,有一点是清楚的,太阳系不仅在我们的银河系中,甚至在太阳系附近都没有成为典范。这一发现,虽然令人不安,迫使我们重新考虑我们的知识行星在不同的光,也许质疑一些理论支柱,我们的基础上,我们目前的“理解”。未来十年对于我们也许应该称之为银河系行星科学的发展至关重要。在本文中,我们回顾了我们目前对这一主题的知识的亮点和陷阱,并详细阐述了这些知识在未来十年可能会如何演变。更重要的是,我们确定了在这一迷人的银河系行星远程探索之旅中应该采取的强制性科学和技术步骤。

英文摘要:

Planetary science beyond the boundaries of our Solar System is today in its infancy. Until a couple of decades ago, the detailed investigation of the planetary properties was restricted to objects orbiting inside the Kuiper Belt. Today, we cannot ignore that the number of known planets has increased by two orders of magnitude nor that these planets resemble anything but the objects present in our own Solar System. Whether this fact is the result of a selection bias induced by the kind of techniques used to discover new planets -mainly radial velocity and transit - or simply the proof that the Solar System is a rarity in the Milky Way, we do not know yet. What is clear, though, is that the Solar System has failed to be the paradigm not only in our Galaxy but even 'just' in the solar neighbourhood. This finding, although unsettling, forces us to reconsider our knowledge of planets under a different light and perhaps question a few of the theoretical pillars on which we base our current 'understanding'. The next decade will be critical to advance in what we should perhaps call Galactic planetary science. In this paper, we review highlights and pitfalls of our current knowledge of this topic and elaborate on how this knowledge might arguably evolve in the next decade.More critically, we identify what should be the mandatory scientific and technical steps to be taken in this fascinating journey of remote exploration of planets in our Galaxy.

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。

↑