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格利澤367b

格利澤 367b圍繞紅矮星格利澤367(GJ 367)運行的的一顆系外行星,位於船帆座,距離地球31光年(9.5秒差距[1]。這顆系外行星只需7.7小時就可以繞其母恒星運行一周,是所有行星中已知軌道週期最短的[2]。由於其軌道非常接近母恆星,這顆系外行星受到的輻射比地球從太陽接收到的輻射多500倍。 GJ 367b上的日間溫度約為1500°C(1770 K;2730°F)[3]

由於軌道較近,它很可能被潮汐鎖定。由於極端的溫度,格利澤367b的生命跡象會隨著大氣一起蒸發掉。GJ 367b的核心可能由鐵和鎳組成,使其核心類似於水星的核心。GJ 367b的核心密度極高,構成了該行星的大部分質量[4]

參考資料

[编辑]
  1. ^ Witze, Alexandra. This tiny iron-rich world is extraordinarily metal. Nature. 2021-12-02 [2022-02-27]. doi:10.1038/d41586-021-03587-z. (原始内容存档于2021-12-05) (英语). 
  2. ^ Lam, Kristine W. F.; Csizmadia, Szilárd; Astudillo-Defru, Nicola; Bonfils, Xavier; Gandolfi, Davide; Padovan, Sebastiano; Esposito, Massimiliano; Hellier, Coel; Hirano, Teruyuki; Livingston, John; Murgas, Felipe. GJ 367b: A dense, ultrashort-period sub-Earth planet transiting a nearby red dwarf star. Science. 2021-12-03, 374 (6572): 1271–1275 [2022-02-27]. doi:10.1126/science.aay3253. (原始内容存档于2022-03-07). 
  3. ^ Mann, Adam. Metal Planet Orbits Its Star Every 7.7 Hours. The New York Times. 2021-12-02 [2021-12-05]. ISSN 0362-4331. (原始内容存档于2021-12-08) (美国英语). 
  4. ^ Hellier, Coel. A new exoplanet: meet GJ 367b, an iron planet smaller and denser than Earth. The Conversation. [2021-12-05]. (原始内容存档于2021-12-08) (英语). 
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格利澤367b
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