WASP-121b
外观
太陽系外行星 | 太陽系外行星列表 | |
---|---|---|
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母恆星 | ||
母恆星 | WASP-121 | |
星座 | 船尾座[1] | |
赤经 | (α) | 07h 10m 24.0s[2] |
赤纬 | (δ) | -39° 05′ 51″[2] |
距離 | 880[3][4] ly (270[2] pc) | |
光譜類型 | F6V[2][5] | |
軌道參數 | ||
半長軸 | (a) | 0.02544[2] AU |
軌道離心率 | (e) | 0.0[2] |
公轉週期 | (P) | 1.275[2] d |
軌道傾角 | (i) | 87.6[2]° |
物理性质 | ||
质量 | (m) | 1.184[2][5] MJ |
半径 | (r) | 1.81[5] RJ |
發現 | ||
發現時間 | 2015[2] | |
發現者 | ||
發現方法 | 凌日法[2] | |
發表論文 | 已發表論文 | |
數據庫參考 | ||
太陽系外行星 百科全書 | data | |
SIMBAD | data |
WASP-121b是一顆環繞恆星WASP-121的太陽系外行星[4][6],亦是首顆發現平流層(大氣層中溫度隨高度上升的氣層)以及大氣當中含有水份的系外行星[4][6]。WASP-121b在天球上位於船尾座[1],距離地球約880光年[3][4]。
概要
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WASP-121b是質量為木星1.18倍的熱木星,半徑則為木星的1.81倍[5][4],它環繞母恆星WASP-121的軌道週期為1.27日[5][4]。WASP-121b的大氣層至少由三層組成,上層由氫組成,中層含鈉,下層含鐵[7],並存在鉻、釩、鈣、鋇和鈦等離子[8][9][10]。
參見
[编辑]參考資料
[编辑]- ^ 1.0 1.1 Staff. Finding the constellation which contains given sky coordinates. djm.cc. [3 August 2017]. (原始内容存档于2019-08-15).
- ^ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 2.10 Staff. Planet WASP-121 b. exoplanet.eu. 2015 [3 August 2017]. (原始内容存档于2025-02-20).
- ^ 3.0 3.1 Pultarova, Tereza. Hubble Telescope Detects Stratosphere on Huge Alien Planet. space.com. 3 August 2017 [3 August 2017]. (原始内容存档于2019-04-24).
- ^ 4.0 4.1 4.2 4.3 4.4 4.5 Landau, Elizabeth; Villard, Ray. Hubble Detects Exoplanet with Glowing Water Atmosphere. NASA. 2 August 2017 [2 August 2017]. (原始内容存档于2019-05-10).
- ^ 5.0 5.1 5.2 5.3 5.4 Staff. WASP Planets. wasp-planets.net. 2017 [3 August 2017]. (原始内容存档于2019-04-18).
- ^ 6.0 6.1 Evans, Thomas M.; et al. An ultrahot gas-giant exoplanet with a stratosphere. Nature (journal). 2 August 2017, 548: 58–61 [2 August 2017]. doi:10.1038/nature23266. (原始内容存档于2019-12-07).
- ^ Julia V. Seidel, Bibiana Prinoth, Lorenzo Pino, Leonardo A. dos Santos, Hritam Chakraborty, Vivien Parmentier, Elyar Sedaghati, Joost P. Wardenier, Casper Farret Jentink, Maria Rosa Zapatero Osorio, Romain Allart, David Ehrenreich, Monika Lendl, Giulia Roccetti, Yuri Damasceno, Vincent Bourrier, Jorge Lillo-Box, H. Jens Hoeijmakers, Enric Pallé, Nuno Santos, Alejandro Suárez Mascareño, Sergio G. Sousa, Hugo M. Tabernero & Francesco A. Pepe. Vertical structure of an exoplanet’s atmospheric jet stream. Nature. 2025. arXiv:2502.12261
. doi:10.1038/s41586-025-08664-1.
- ^ Merritt, Stephanie R.; Gibson, Neale P.; Nugroho, Stevanus K.; De Mooij, Ernst J W.; Hooton, Matthew J.; Lothringer, Joshua D.; Matthews, Shannon M.; Mikal-Evans, Thomas; Nikolov, Nikolay; Sing, David K.; Watson, Chris A., An inventory of atomic species in the atmosphere of WASP-121b using UVES high-resolution spectroscopy, Monthly Notices of the Royal Astronomical Society, 2021, 506 (3): 3853–3871, arXiv:2106.15394
, doi:10.1093/mnras/stab1878
- ^ Azevedo Silva, T.; et al, Detection of barium in the atmospheres of the ultra-hot gas giants WASP-76b and WASP-121b, Astronomy & Astrophysics, 2022, 666: L10, S2CID 252873126, arXiv:2210.06892
, doi:10.1051/0004-6361/202244489
- ^ B. Prinoth, J.V. Seidel, H.J. Hoeijmakers, B.M. Morris, M. Baratella, N.W. Borsato, Y.C. Damasceno, V. Parmentier, D. Kitzmann, E. Sedaghati, L. Pino, F. Borsa, R. Allart, N. Santos, M. Steiner, A. Suárez Mascareño, H. Tabernero, M.R. Zapatero Osorio. Titanium chemistry of WASP-121 b with ESPRESSO in 4-UT mode. Astronomy & Astrophysics. February 2025, 694. arXiv:2502.12262
. doi:10.1051/0004-6361/202452405.
外部連結
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