中性氢

来自Shiyin's note
Shen（讨论 | 贡献）2018年5月28日 (一) 02:50的版本
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  • the neutral hydrogen (H i) in the interstellar medium (ISM) is in two phases - a warm and a cold phase.
  • The warm neutral medium (WNM) has typical temperatures of ∼ 10000 K
  • he cold neutral medium (CNM) has typical temperatures < 300 K (20-50%) (mixed with H2分子氢
  • The WNM is mostly detected in emission and the CNM in absorption.
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