HCO emission from H II-molecular cloud interface regions.
HCO emission from H II-molecular cloud interface regions.
复制标题
H II 分子云界面区域的 HCO 发射。
DOI：
10.1086/166337
复制
发表时间：
1988
期刊：
影响因子：
--
通讯作者：
L. Ziurys
中科院分区：
文献类型：
--
作者：
M. Schenewerk;L. Snyder;J. Hollis;P. Jewell;L. Ziurys
为了确定HCO的普遍性并研究其化学性质，对四个最强的HCO NK-，K+ = 1（01）-0（00）超精细跃迁中的已知分子云进行了调查。HCO发射观察到在七个分子云。其中三个，NGC 2264，W 49和NGC 7538，是以前不知道的HCO来源。此外，NGC 2024和Sgr B2被映射并显示具有广泛的HCO排放。观测结果表明HCO丰度在H Ⅱ-分子云界面区域增强，并支持C+和HCO发射之间的相关性。NGC 2024中HCO排放的强度被解释为这种增强和源结构以及与地球的接近程度。
A survey of well-known molecular clouds in the four strongest HCO NK-,K+ = 1(01)-0(00) hyperfine transitions has been carried out to determine the prevalence of HCO and to study its chemistry. HCO emission was observed in seven molecular clouds. Three of these, NGC 2264, W49, and NGC 7538, were not previously known sources of HCO. In addition, NGC 2024 and Sgr B2 were mapped and shown to have extensive HCO emission. The survey results show the HCO abundance to be enhanced in H II-molecular cloud interface regions and support a correlation between C+ and HCO emission. The strength of the HCO emission in NGC 2024 is interpreted in terms of this enhancement and the source structure and proximity to Earth.