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FINE-STRUCTURE LINE CONTRIBUTION TO IRAS BANDS IN THE ROSETTE NEBULA

机译:结实星云中IRAS波段的精细结构线贡献

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摘要

The possibility of significant line emission contributing to the 12, 25, 60, and 100 μm infrared emission is explored for the Rosette H Ⅱ region. We find that the [O Ⅲ] fine-structure lines in the far-infrared contribute significantly (25%-40%) at both 60 and 100 μm. All of the 12 μm emission is consistent with emission from [S Ⅳ] and other lines. The [O Ⅳ] line can explain the 25 μm emission near the central cavity but is unable to explain the strength of the 25 μm emission at more distant lines of sight. Based on the strength of the 25 μm emission and the high 60/100 ratio, we conclude that a hot dust component within the H Ⅱ region is necessary and that the best candidate for this component is "astronomical" iron.
机译:在Rosette HⅡ区,研究了显着的线辐射对12、25、60和100μm红外辐射有贡献的可能性。我们发现,在60和100μm处,远红外[OⅢ]精细结构线的贡献显着(25%-40%)。所有的12μm发射都与[SⅣ]和其他谱线的发射一致。 [OⅣ]线可以解释中心腔附近25μm发射的强度,但不能解释更远视线处25μm发射的强度。基于25μm发射强度和高60/100比率,我们得出结论,HⅡ区域内的热粉尘成分是必要的,并且该成分的最佳候选者是“天文”铁。

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