超高精度测光观测及数据处理分析方法  

Ultra-high precision photometry and data analysis

作　　者：石亚卿 王炜 赵景昆[1] SHI Yaqing;WANG Wei;ZHAO Jingkun(CAS Key Laboratory of Optical Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China;School of Astronomy and Space Science,University of Chinese Academy of Sciences,Beijing 100049,China;Chinese Academy of Sciences South America Center for Astronomy,National Astronomical Observatories,Chinese Academy of Sciences,Beijing 100101,China)

机构地区：[1]中国科学院国家天文台中国科学院光学天文重点实验室,北京100049 [2]中国科学院大学天文与空间科学学院,北京100101 [3]中国科学院国家天文台中智南美天文中心,北京100101

出　　处：《中国科学院大学学报（中英文）》2023年第6期761-770,共10页Journal of University of Chinese Academy of Sciences

基　　金：国家自然科学基金(11988101,42075123,62127901,11973048,11890694);国家重点研发计划(2019YFA0405100)资助。

摘　　要：太阳系外行星大气是系外行星领域迅速发展且最具挑战的课题之一,它依赖于高精度的测光和光谱数据。以WASP-103b的近红外地基望远镜CFHT上WIRCam照相机观测的两次次食数据为例,详细介绍高精度测光对观测的要求,阐述所需的数据处理和分析方法。结果表明,采用本文方法,可以利用地面望远镜实现10^(-4)的超高精度较差测光。Detailed characterization of extrasolar planetary atmosphere is one of the hottest and most challenging research topics nowadays,which relies on high precision photometric or spectroscopic data.Using our secondary eclipse observation of the hot Jupiter WASP-103b by the WIRCam on the CFHT as example,we describe the demands on instruments,observation strategy and data analysis to achieve ultra-high precision.With our techniques,it is proved to be feasible to reach a precision down to~10^(-4)using ground-based telescopes.

关 键 词：太阳系外行星 热木星 地基观测 误差分析 高精度测光 

分 类 号：P125.4[天文地球—天体测量] P113[天文地球—天文学]