"Search and Characterization of Exoplanets, Brown Dwarfs and Young Stars"

对系外行星的搜索和研究正在蓬勃发展，并推动了地面和太空中最大观测站的建设。这项努力的目标是确定行星系统的频率，了解行星是如何形成的，以及它们是如何演化的。最终目标是找到一个像我们这样的世界，一个可能有生命存在的类地行星。通过各种技术，包括径向速度、凌日方法、微透镜和最近的直接成像，已经发现了近700颗系外行星。下一步是揭开更多通过像双子座行星成像仪(GPI)这样的强大仪器通过成像探测到的气态巨行星，并开发红外波长的径向速度技术，以便能够在低质量恒星的宜居带(HZ)内搜索地球大小的行星。这些目标最终将被詹姆斯·韦伯太空望远镜(JWST)观测到，以寻找其大气中的水蒸气。

The search and studies of exoplanet is blooming and motivate the construction of the largest observatories both on the ground and in space. The goal of this endeavour is to determine the frequency of planetary systems, understand how planets form and how they evolve. The ultimate goal is to find a world like ours, a terrestrial planet that could harbor life. Nearly 700 exoplanets have been discovered through various techniques including radial velocity, the transit method, micro-lensing and, very recently, direct imaging. The next step is to unveil more gas giant planets detected through imaging with a powerful instrument like the Gemini Planet Imager (GPI) and develop the radial velocity technique at infrared wavelengths to enable the search of Earth-size planets within the habitable zone (HZ) of low-mass stars. These targets will eventually be observed by the James Webb Space Telescope (JWST), late in this decade, to search for water vapour in their atmosphere.