| Title | The Earth 2.0 Space Mission for Detecting Earth-like Planets around Solar Type Stars |
| Authors | Ge, Jian Zhang, Hui Zhang, Yongshuai Li, Yan Zhou, Dan Tang, Zhenghong Zhang, Congcong Wang, Chaoyan Yu, Yong Yao, Xinyu Zhu, Jiapeng Fang, Tong Chen, Wen Han, Xingbo Chen, Kun Yang, Yingquan Bi, Xingzi Zhang, Kuoxiang Chen, Yonghe Liu, Xiaohua Yin, Dayi Zhang, Quan Yang, Baoyu Wei, Chuanxin Zhu, Yuji Song, Zongxi Gao, Wei Li, Wei Wang, Fengtao Cheng, Pengfei Shen, Chao Pan, Yue Zhang, Hongfei Wang, Jian Wang, Hui Chen, Cheng Zhang, Jun Wang, Zhiyue Zang, Weicheng Mao, Shude Zhu, Wei Wang, Sharon Xuesong Xie, Jiwei Liu, Huigen Zhou, Jilin Yang, Ming Jiang, Chaofeng Chen, Dichang Tang, Wei Sun, Mengfei Wang, Mutian Li, Yudong Wen, Lin Feng, Jie Willis, Kevin Huang, Chelsea Ma, Bo Wang, Yonghao Shen, Rongfeng Tam, Pak-Hin Thomas Hu, Zhecheng Yang, Yanlv Feng, Fabo Xiang, Maosheng Yu, Jie Zhang, Jinghua Wu, Yaqian Zong, Weikai Yuan, Haibo Li, Tanda Zhao, Yinan Zou, Yuanchuan Deng, Hongping Liu, Beibei Yang, Jun Ye, Quanzhi Yin, Qing-zhu |
| Affiliation | Chinese Acad Sci, Shanghai Astron Observ, Shanghai, Peoples R China Chinese Acad Sci, Innovat Acad Microsatellites, Shanghai, Peoples R China Chinese Acad Sci, Shanghai Inst Tech Phys, Shanghai, Peoples R China Chinese Acad Sci, Xian Inst Opt & Precis Mech, Xian, Peoples R China Univ Sci & Technol China, Dept Modern Phys, Hefei, Peoples R China Tsinghua Univ, Dept Astron, Beijing, Peoples R China Nanjing Univ, Dept Astron, Nanjing, Peoples R China Chinese Acad Sci, Xinjiang Tech Inst Phys & Chem, Urumqi, Xinjiang, Peoples R China Sci Talent Training Ctr, Gainesville, FL USA Univ Southern Queensland, Ctr Astrophys, Toowoomba, Qld, Australia Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai, Guangdong, Peoples R China Shanghai Jiao Tong Univ, Tsung Dao Lee Inst, 800 Dongchuan Rd, Shanghai 200240, Peoples R China Max Planck Inst Astron, Heidelberg, Germany Natl Astron Observ China, Beijing, Peoples R China Max Planck Inst Solar Syst Res, Gottingen, Germany Beijing Normal Univ, Dept Astron, Beijing, Peoples R China Univ Geneva, Dept Astron, Geneva, Switzerland Huazhong Univ Sci & Technol, Dept Astron, Wuhan, Peoples R China Zhejiang Univ, Dept Phys, Hangzhou, Peoples R China Peking Univ, Sch Phys, Beijing, Peoples R China Univ Maryland, Dept Astron, College Pk, MD 20742 USA Univ Calif Davis, Dept Earth & Planetary Sci, Davis, CA 95616 USA |
| Keywords | HABITABLE-ZONE SIZED PLANET CANDIDATE RUNAWAY SYSTEM |
| Issue Date | 2022 |
| Publisher | SPACE TELESCOPES AND INSTRUMENTATION 2022: OPTICAL, INFRARED, AND MILLIMETER WAVE |
| Abstract | 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. |
| URI | http://hdl.handle.net/20.500.11897/657259 |
| ISBN | 978-1-5106-5342-9 |
| ISSN | 0277-786X |
| DOI | 10.1117/12.2630656 |
| Indexed | CPCI-S(ISTP) |
| Appears in Collections: | 物理学院 |
