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A temperate 10-Earth-mass exoplanet around the Sun-like star Kepler-725

文献类型：期刊论文

作者Sun LL(孙磊磊)1,2,3; Gu SH(顾盛宏)1,2,4; Wang XB(王晓彬)1,2,4; Schmitt, J. H. M. M.5; Ioannidis, P.5; Kouwenhoven, M. B. N.6; Dou, J.7,8; Zhao, G.7,8
刊名NATURE ASTRONOMY
出版日期2025
ISSN号2397-3366
DOI10.1038/s41550-025-02565-z
产权排序第1完成单位
文献子类Article; Early Access
英文摘要The detection of low-mass exoplanets (<= 10 Earth masses (M circle plus)) yields fundamental inputs for current theories of planet formation and evolution, and supplies critical information for the planned direct-imaging missions that aim to detect and characterize Earth-like planets in the habitable zones around solar-like stars. However, the most efficient detection techniques available for low-mass exoplanets (that is, photometric transit and radial velocity methods) are heavily biased towards the detection of short-period planets (for example, <= 100 days) and strongly favour late-type stars. Here we report the discovery of Kepler-725 c, a 10 +/- 3 M circle plus exoplanet within the habitable zone of the late G-type dwarf Kepler-725. Through analysis of the transit timing variations of the relatively short-period (39.64 days) warm Jupiter Kepler-725 b, we find that Kepler-725 c has a period of 207.5 days and travels in an eccentric orbit (with an eccentricity of 0.44 +/- 0.02 and an orbital semi-major axis of 0.674 +/- 0.002 au), receiving a time-averaged insolation of 1.4 times the Earth's value. This discovery demonstrates that the transit timing variation method enables the detection and accurate mass measurement of a super-Earth/mini-Neptune within a solar-like star's habitable zone. Similar searches for such exoplanets could be conducted in other exoplanetary systems in the era of the Transiting Exoplanet Survey Satellite mission and upcoming PLAnetary Transits and Oscillations of stars and Earth 2.0 missions.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地HEIDELBERGER PLATZ 3, BERLIN, 14197, GERMANY
WOS关键词PLANET ; DYNAMICS ; DENSITY ; SYSTEMS ; TOOLS ; CHINA ; EARTH ; MASS
资助项目National Natural Science Foundation of China (No. 12003063) International Centre of Supernovae, Yunnan Key Laboratory (No. 202302AN360001); NASA (National Aeronautics and Space Administration) Science Mission directorate[11827804]; NASA (National Aeronautics and Space Administration) Science Mission directorate[U2031210]; National Natural Science Foundation of China[202305AS350009]; Yunnan Fundamental Research Project[CMS-CSST-201906]; China Manned Space Project[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory[RDF-16-01-16]; Research Development Fund; Xi'an Jiaotong-Liverpool University[CMS-CSST-2025-A18]; China Manned Space Program; China Scholarship Council[GZ1419]; Deutscher Akademischer Austausch Dienst - Sino-German Center for Research Promotion
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001501417700001
出版者NATURE PORTFOLIO
资助机构National Natural Science Foundation of China (No. 12003063) International Centre of Supernovae, Yunnan Key Laboratory (No. 202302AN360001) ; NASA (National Aeronautics and Space Administration) Science Mission directorate[11827804, U2031210] ; National Natural Science Foundation of China[202305AS350009] ; Yunnan Fundamental Research Project[CMS-CSST-201906] ; China Manned Space Project[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory[RDF-16-01-16] ; Research Development Fund ; Xi'an Jiaotong-Liverpool University[CMS-CSST-2025-A18] ; China Manned Space Program ; China Scholarship Council[GZ1419] ; Deutscher Akademischer Austausch Dienst - Sino-German Center for Research Promotion
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28324]  
专题云南天文台_系外行星研究组
云南天文台_中国科学院天体结构与演化重点实验室
作者单位1.Yunnan Observatories, Chinese Academy of Sciences, Kunming, China;
2.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming, China;
3.International Centre of Supernovae, Yunnan Key Laboratory, Kunming, China;
4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing, China;
5.Hamburger Sternwarte, Universität Hamburg, Hamburg, Germany;
6.Department of Physics, School of Mathematics and Physics, Xi’an Jiaotong-Liverpool University, Suzhou, China;
7.Nanjing Institute of Astronomical Optics & Technology, Chinese Academy of Sciences, Nanjing, China;
8.CAS Key Laboratory of Astronomical Optics & Technology, Nanjing Institute of Astronomical Optics & Technology, Nanjing, China
推荐引用方式
GB/T 7714		 Sun LL,Gu SH,Wang XB,et al. A temperate 10-Earth-mass exoplanet around the Sun-like star Kepler-725[J]. NATURE ASTRONOMY,2025.
APA 孙磊磊.,顾盛宏.,王晓彬.,Schmitt, J. H. M. M..,Ioannidis, P..,...&Zhao, G..(2025).A temperate 10-Earth-mass exoplanet around the Sun-like star Kepler-725.NATURE ASTRONOMY.
MLA 孙磊磊,et al."A temperate 10-Earth-mass exoplanet around the Sun-like star Kepler-725".NATURE ASTRONOMY (2025).

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