发表机构
Instituto Nacional de Astrofísica, Óptica y Electrónica（国家天体物理学、光学和电子学研究所）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本文回顾了利用天体测量学（精度达数十微角秒）表征系外行星轨道的基本原理，总结了迄今发现的行星性质，并展望了该技术对系外行星领域的贡献。
AI 中文摘要
天体测量学是搜索太阳系外行星最古老的方法。该技术提供了关于行星系统的关键信息，如行星的真实质量及其三维轨道结构。如今，一方面是天基任务盖亚（Gaia），另一方面是红外和射电波长的地面干涉测量，可以实现数十微角秒的天体测量精度。得益于这一前所未有的精度水平，通过天体测量方法发现的外行星数量已开始增长。在本章中，我回顾了利用天体测量数据对不可见的行星伴星进行轨道表征的基本原理。我还回顾了迄今通过天体测量方法发现的外行星的性质，并评论了该技术可以为外行星领域做出的贡献。
英文摘要
Astrometry is the oldest method used to search for extrasolar planets. This technique provides key information about a planetary system, like the true mass of planets and its three-dimensional orbital architecture. Nowadays, the space-based mission Gaia, on one hand, and ground-based interferometry at infrared and radio wavelengths, on the other hand, can achieve astrometric accuracies of tens of micro-arseconds. Thanks to this unprecedented level of accuracy, the number of astrometrically discovered exoplanets has started to grow. In this chapter, I review the basic principles for orbital characterization of unseen planetary companions using astrometric data. I also review the properties of the exoplanets discovered so far with astrometric methods and comment on the contributions that this technique can make to the exoplanet field.
CommentsThis work is a peer-reviewed chapter contribution to an edited volume
