在原行星盘中通过光化学形成甲基离子
Olivier Berné1, Marie-Aline Martin-Drumel2, Ilane Schroetter3
1Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, CNRS, CNES, UPS, Toulouse, France. olivier.berne@irap.omp.eu.
Nature
|June 26, 2023
概括
甲基 (CH3+) 在太空中首次被检测到,证实其在星际有机化学中的作用. 詹姆斯·韦伯太空望远镜的观测显示,它在原行星盘中被紫外线激活.
科学领域:
- 天体化学
- 星际有机化学
- 外行星科学
背景情况:
- 甲基离子 (CH3+) 在40年前被认为是星际气相有机化学的关键发起者.
- 在太阳系之外以前没有观察到CH3+,这导致了涉及谷物表面化学的替代理论.
研究的目的:
- 在星际环境中检测甲基 (CH3+).
- 研究CH3+在原行星盘中的气相有机化学中的作用.
主要方法:
- 使用詹姆斯·韦伯太空望远镜 (JWST) 进行观测.
- 专注于一个原行星盘在猎户座的恒星形成区域.
主要成果:
- 在原行星盘中成功观察了甲基 (CH3+).
- 证实紫外线辐射激活了CH3+引发的气相有机化学反应.
结论:
- 首次在外界发现CH3+证实了它在星际有机化学中的作用.
- 紫外线辐射在原行星盘中激活CH3+驱动的化学反应中起着至关重要的作用.
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