raff淫雨霏霏
发表于 2025-3-21 17:15:56
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大炮
发表于 2025-3-21 20:51:39
Systematic Variation of the Helium Ionization in Galactic HII Regionse for larger radii. This behavior can be interpreted as reflecting a general decrease of the He abundance with the galactic radius (similar to that also found for planetary nebulae; Torres-Peimbert and Peimbert, 1977) plus a reduction of the ionization in the inner parts of the Galaxy. The crucial aspect is that the observations
辫子带来帮助
发表于 2025-3-22 04:13:38
Carbon Radio Recombination Line Emission from Dark Clouds source and as an extended source of far infrared thermal dust emission; the CII region coincides with a localized region of enhanced molecular line emission. We summarize the physical properties (temperature and density) of the CII regions as derived from the recombination line observations and comment on prospects for further research.
轻信
发表于 2025-3-22 04:35:42
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promote
发表于 2025-3-22 09:02:43
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ARC
发表于 2025-3-22 13:15:26
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charisma
发表于 2025-3-22 18:02:06
Interpretation of HII Region Radio Recombination Linesno need for another review in the traditional sense. There does however seem to be a certain amount of confusion, at least among observers, as to whether or not theory and observations are consistent with one another. One problem is that simple models of the recombination line transfer do not appear
宫殿般
发表于 2025-3-22 23:17:15
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reptile
发表于 2025-3-23 04:24:25
Radio Recombination Lines from Planetary Nebulaen (Terzian 1973, 1978). Only in recent years it has been possible to detect these lines with adequate signal-to-noise ratios. The largest radio telescopes have been used for such observations with long integration times. Successful results have been obtained for Hnα lines with n ≤ 110, and only uppe
Stricture
发表于 2025-3-23 07:35:42
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