New constraints on Triton's atmosphere from the 6 October 2022 stellar occultation
文献类型：期刊论文
| 作者 | Yuan, Ye21 ; Zhang, Chen21; Li, Fan21; Chen, Jian; Fu, Yanning; Bai, Chunhai; Gao, Xing; Wang, Yong; Zhong, Tuhong; Gao, Yixing
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| 刊名 | ASTRONOMY & ASTROPHYSICS
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| 出版日期 | 2024-04-10 |
| 卷号 | 684页码:L13 |
| 关键词 | techniques: photometric occultations planets and satellites: atmospheres planets and satellites: physical evolution planets and satellites: individual: Triton |
| ISSN号 | 0004-6361 |
| DOI | 10.1051/0004-6361/202348460 |
| 产权排序 | 3 |
| 英文摘要 | The atmosphere of Triton was probed directly by observing a ground-based stellar occultation on 6 October 2022. This rare event yielded 23 positive light curves collected from 13 separate observation stations contributing to our campaign. The significance of this event lies in its potential to directly validate the modest pressure fluctuation on Triton, a phenomenon not definitively verified by previous observations, including only five stellar occultations, and the Voyager 2 radio occultation in 1989. Using an approach consistent with a comparable study, we precisely determined a surface pressure of 14.07(-0.13)(+0.21) mu bar in 2022. This new pressure rules out any significant monotonic variation in pressure between 2017 and 2022 through direct observations, as it is in alignment with the 2017 value. Additionally, both the pressures in 2017 and 2022 align with the 1989 value. This provides further support for the conclusion drawn from the previous volatile transport model simulation, which is consistent with the observed alignment between the pressures in 1989 and 2017; that is to say, the pressure fluctuation is modest. Moreover, this conclusion suggests the existence of a northern polar cap extended down to at least 45 degrees N-60 degrees N and the presence of nitrogen between 30 degrees S and 0 degrees. |
| WOS关键词 | PLUTOS ATMOSPHERE ; THERMAL STRUCTURE ; PRESSURE ; NEPTUNE ; URANUS ; CO |
| 资助项目 | National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[XDA0350300] ; Strategic Priority Research Program of the Chinese Academy of Sciences[12203105] ; Strategic Priority Research Program of the Chinese Academy of Sciences[12103091] ; Young Scientists Fund of the National Natural Science Foundation of China[62394351] ; Major Program of the National Natural Science Foundation of China[U2031144] ; National Natural Science Foundation of China ; China Manned Space Project ; Purple Mountain Observatory, Chinese Academy of Sciences ; Open Project Program of the CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province[85-cm] ; People's Government of Yunnan Province[80-cm] ; Xinjiang Astronomical Observatory, Chinese Academy of Sciences ; Chinese amateur astronomers from FuJian Astronomical Society ; Dalian Bootes Astronomical Society ; Quzhou Astronomical Association, Hunan Astronomical Association ; Wuyi University |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001199982500002 |
| 出版者 | EDP SCIENCES S A |
| 资助机构 | National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809 ; Strategic Priority Research Program of the Chinese Academy of Sciences ; Young Scientists Fund of the National Natural Science Foundation of China ; Major Program of the National Natural Science Foundation of China ; National Natural Science Foundation of China ; China Manned Space Project ; Purple Mountain Observatory, Chinese Academy of Sciences ; Open Project Program of the CAS Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences ; Chinese Academy of Sciences ; People's Government of Yunnan Province ; Xinjiang Astronomical Observatory, Chinese Academy of Sciences ; Chinese amateur astronomers from FuJian Astronomical Society ; Dalian Bootes Astronomical Society ; Quzhou Astronomical Association, Hunan Astronomical Association ; Wuyi University |
| 源URL | [http://ir.xao.ac.cn/handle/45760611-7/6757]  |
| 专题 | 光学天文与技术应用研究室_光学天文技术研究团组 |
| 通讯作者 | Yuan, Ye |
| 作者单位 | 1.Dongguan Sci Museum, 38 Xinfen Rd, Dongguan 523000, Guangdong, Peoples R China 2.Amateur Astornomrs Assoc Maoming, Room 101-1, Unit 4 Bldg 50, North Renmin Rd, Maoming 525000, Guangdong, Peoples R China 3.JiNan Amateur Astron Assoc, Jinan 250000, Shandong, Peoples R China 4.Qixing Observ, Jinan 250000, Shandong, Peoples R China 5.Sichuan Normal Univ, Coll Phys & Elctron Engn, 1819 Sect 2 Chenglong Ave, Chengdu 610101, Peoples R China 6.Xiamen Minli Primary Sch, Sch Informat, 1 Shengping Rd, Xiamen 361001, Fujian, Peoples R China 7.Xingming Observ, Urumqi 830000, Xinjiang, Peoples R China 8.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 9.Univ Sci & Technol China, Sch Astron & Space Sci, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China 10.Duzhou Primary Sch, Shipai Town, Dongguan 523000, Guangdong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yuan, Ye,Zhang, Chen,Li, Fan,et al. New constraints on Triton's atmosphere from the 6 October 2022 stellar occultation[J]. ASTRONOMY & ASTROPHYSICS,2024,684:L13. |
| APA | Yuan, Ye.,Zhang, Chen.,Li, Fan.,Chen, Jian.,Fu, Yanning.,...&Qu, Qingyue.(2024).New constraints on Triton's atmosphere from the 6 October 2022 stellar occultation.ASTRONOMY & ASTROPHYSICS,684,L13. |
| MLA | Yuan, Ye,et al."New constraints on Triton's atmosphere from the 6 October 2022 stellar occultation".ASTRONOMY & ASTROPHYSICS 684(2024):L13. |
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来源：新疆天文台
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