超高精度测光观测及数据处理分析方法

doi:10.7523/j.ucas.2022.034

中国科学院大学学报 ›› 2023, Vol. 40 ›› Issue (6): 761-770.DOI: 10.7523/j.ucas.2022.034

超高精度测光观测及数据处理分析方法

石亚卿^1,2,3, 王炜^1,3, 赵景昆¹

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

收稿日期:2022-01-14 修回日期:2022-04-07 发布日期:2022-04-26
通讯作者: 王炜,E-mail:wangw@nao.cas.cn
基金资助:
国家自然科学基金（11988101，42075123，62127901，11973048，11890694）和国家重点研发计划（2019YFA0405100）资助

Ultra-high precision photometry and data analysis

SHI Yaqing^1,2,3, WANG Wei^1,3, ZHAO Jingkun¹

1. CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China;
2. School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 100049, China;
3. Chinese Academy of Sciences South America Center for Astronomy, National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100101, China

Received:2022-01-14 Revised:2022-04-07 Published:2022-04-26

摘要/Abstract

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。

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

Abstract: 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.

Key words: exoplanet, hot Jupiter, ground-based observation, error analysis, high-precision photometry

中图分类号:

P125.4
P113

石亚卿, 王炜, 赵景昆. 超高精度测光观测及数据处理分析方法[J]. 中国科学院大学学报, 2023, 40(6): 761-770.

SHI Yaqing, WANG Wei, ZHAO Jingkun. Ultra-high precision photometry and data analysis[J]. Journal of University of Chinese Academy of Sciences, 2023, 40(6): 761-770.

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超高精度测光观测及数据处理分析方法

Ultra-high precision photometry and data analysis

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