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The Earth 2.0 Space Mission for Detecting Earth-like Planets around Solar Type Stars
Ge, Jian1; Zhang, Hui1; Zhang, Yongshuai1; Li, Yan1; Zhou, Dan1; Tang, Zhenghong1; Zhang, Congcong1; Wang, Chaoyan1; Yu, Yong1; Yao, Xinyu1; Zhu, Jiapeng1; Fang, Tong1; Chen, Wen2; Han, Xingbo2; Chen, Kun2; Yang, Yingquan2; Bi, Xingzi2; Zhang, Kuoxiang2; Chen, Yonghe3; Liu, Xiaohua3; Yin, Dayi3; Zhang, Quan3; Yang, Baoyu3; Wei, Chuanxin3; Zhu, Yuji3; Song, Zongxi4; Gao, Wei4; Li, Wei4; Wang, Fengtao4; Cheng, Pengfei4; Shen, Chao4; Pan, Yue4; Zhang, Hongfei5; Wang, Jian5; Wang, Hui5; Chen, Cheng5; Zhang, Jun5; Wang, Zhiyue5; Zang, Weicheng6; Mao, Shude6; Zhu, Wei6; Wang, Sharon Xuesong6; Xie, Jiwei7; Liu, Huigen7; Zhou, Jilin7; Yang, Ming7; Jiang, Chaofeng7; Chen, Dichang7; Tang, Wei7; Sun, Mengfei7; Wang, Mutian7; Li, Yudong8; Wen, Lin8; Feng, Jie8; Willis, Kevin9; Huang, Chelsea10; Ma, Bo11; Wang, Yonghao11; Shen, Rongfeng11; Tam, Pak-Hin Thomas11; Hu, Zhecheng11; Yang, Yanlv11; Feng, Fabo12; Xiang, Maosheng13,14; Yu, Jie15; Zhang, Jinghua14; Wu, Yaqian14; Zong, Weikai16; Yuan, Haibo16; Li, Tanda16; Zhao, Yinan17; Zou, Yuanchuan18; Deng, Hongping1; Liu, Beibei19; Yang, Jun20; Ye, Quanzhi21; Yin, Qing-zhu22
Conference NameConference on Space Telescopes and Instrumentation - Optical, Infrared, and Millimeter Wave
Conference Date2022-07-17
Conference PlaceMontreal, CANADA
Contribution Rank4

A space mission called Earth 2.0 (ET) is being developed in China to address a few of fundamental questions in the exoplanet field: How frequently habitable Earth-like planets orbit solar type stars (Earth 2.0s)? How do terrestrial planets form and evolve? Where did floating planets come from? ET consists of six 30 cm diameter transit telescope systems with each field of view of 500 square degrees and one 35 cm diameter microlensing telescope with a field of view of 4 square degrees. The ET transit mode will monitor similar to 1.2M FGKM dwarfs in the original Kepler field and its neighboring fields continuously for four years while the microlensing mode monitors over 30M I< 20.6 stars in the Galactic bulge direction. ET will merge its photometry data with that from Kepler to increase the time baseline to 8 years. This enhances the transit signal-to-noise ratio, reduce false positives, and greatly increases the chance to discover Earth 2.0s. Simulations show that ET transit telescopes will be able to identify similar to 17 Earth 2.0s, about 4,900 Earth-sized terrestrial planets and about 29,000 new planets. In addition, ET will detect about 2,000 transit-timing-variation (TTV) planets and 700 of them will have mass and eccentricity measurements. The ET microlensing telescope will be able to identify over 1,000 microlensing planets. With simultaneous observations with the ground-based KMTNet telescopes, ET will be able to measure masses of over 300 microlensing planets and determine the mass distribution functions of free-floating planets and cold planets. ET will be operated at the Earth-Sun L2 orbit with a designed lifetime longer than 4 years.

Keywordplanets Exoplanets transit photometry microlensing space mission satellite
Indexed ByCPCI
WOS IDWOS:000865466600034
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type会议论文
Affiliation1.Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China
2.Chinese Acad Sci, Innovat Acad Microsatellites, Shanghai, Peoples R China
3.Chinese Acad Sci, Shanghai Inst Tech Phys, Shanghai, Peoples R China
4.Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian, Peoples R China
5.Univ Sci & Technol China, Dept Modern Phys, Hefei, Peoples R China
6.Tsinghua Univ, Dept Astron, Beijing, Peoples R China
7.Nanjing Univ, Dept Astron, Nanjing, Peoples R China
8.Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi, Xinjiang, Peoples R China
9.Sci Talent Training Ctr, Gainesville, FL USA
10.Univ Southern Queensland, Ctr Astrophys, Toowoomba, Qld, Australia
11.Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai, Guangdong, Peoples R China
12.Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, 800 Dongchuan Rd, Shanghai 200240, Peoples R China
13.Max Planck Inst Astron, Heidelberg, Germany
14.Natl Astron Observ China, Beijing, Peoples R China
15.Max Planck Inst Solar Syst Res, Gottingen, Germany
16.Beijing Normal Univ, Dept Astron, Beijing, Peoples R China
17.Univ Geneva, Dept Astron, Geneva, Switzerland
18.Huazhong Univ Sci & Technol, Dept Astron, Wuhan, Peoples R China
19.Zhejiang Univ, Dept Phys, Hangzhou, Peoples R China
20.Peking Univ, Sch Phys, Beijing, Peoples R China
21.Univ Maryland, Dept Astron, College Pk, MD 20742 USA
22.Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA
Recommended Citation
GB/T 7714
Ge, Jian,Zhang, Hui,Zhang, Yongshuai,et al. The Earth 2.0 Space Mission for Detecting Earth-like Planets around Solar Type Stars[C]:SPIE-INT SOC OPTICAL ENGINEERING,2022.
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