JWST时代系外行星大气研究的机遇与挑战  

Opportunities and Challenges in the Study of Exoplanetary Atmospheres during the JWST Era

作　　者：陈紫欣 季江徽[1,3] CHEN Zi-xin;JI Jiang-hui(Purple Mountain Observatory,Chinese Academy of Sciences,Nanjing 210033,China;School of Astronomy and Space Science,University of Science and Technology of China,Hefei 230026,China;Key Laboratory of Planetary Sciences,Chinese Academy of Sciences,Nanjing 210033,China)

机构地区：[1]中国科学院紫金山天文台,南京210033 [2]中国科学技术大学天文与空间科学学院,合肥230026 [3]中国科学院行星科学重点实验室,南京210033

出　　处：《天文学进展》2024年第1期1-25,共25页Progress In Astronomy

基　　金：国家自然科学基金(12033010,11773081);中国科学院B类先导专项(XDB41000000);紫金山天文台小行星基金会资助。

摘　　要：当前已经探测到超过5000颗系外行星,系外行星领域正在从搜寻普查进入到精细表征阶段。过去20年通过对大约100颗系外行星大气表征,初步建立了对凌星行星和直接成像行星的大气探测方法和一系列大气光谱正向建模、反演方法与大气理论的基本框架。詹姆斯·韦布空间望远镜(James Webb Space Telescope,JWST)具有前所未有的近红外到中红外光谱探测能力,高质量数据将带动大气理论与模型的跨越性发展。第一轮观测的科学产出展现了JWST对凌星行星和直接成像行星的大气表征能力以及对宜居带行星大气的初步限制。JWST时代的系外行星大气精细研究已初露峥嵘,与未来5年内即将建成的具有大气普查能力的ARIEL和大口径自适应光学地基望远镜相联合,将在更深的层次上揭示系外行星大气的多样性。Currently,more than 5000 exoplanets have been detected,and exoplanetary science is evolving from a focus on exoplanet detection to a focus on comprehensive exoplanetary characterization.Over the past 20 years,through the atmospheric characterization of about 100 exoplanets,a basic framework has been established for atmospheric detection methods,a series of atmospheric spectral forward modeling and retrieval methods,and atmospheric theory for transit and directly imaged planets.The James Webb Space Telescope(JWST)has unprecedented detection capabilities in the near to mid-infrared spectrum,and high-quality data will drive the development of atmospheric theory and models.The early released scientific results of the Cycle-1 have shown the ability of the JWST to characterize the atmospheres of transit and directly imaged exoplanets,as well as the initial constraints on the atmospheres of potentially habitable planets around nearby low-mass star.The pursuit of finely detailed exoplanet atmospheric characterization in the era of the JWST has already begun,and in conjunction with future missions with atmospheric survey capabilities,such as ARIEL and large-aperture adaptive-optics ground-base telescopes in the next 5 years,will reveal the diversity of exoplanet atmospheres at a much deeper level.

关 键 词：系外行星 行星大气 天基观测 光谱观测 

分 类 号：P185[天文地球—天文学]