The outflow in the L1157 dark cloud : evidence for shock heating of the interacting gas
The outflow in the L1157 dark cloud : evidence for shock heating of the interacting gas
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L1157 暗云中的流出：相互作用气体激波加热的证据
DOI：
10.1086/186431
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
N. Hirano
中科院分区：
文献类型：
--
作者：
T. Umemoto;T. Iwata;Y. Fukui;H. Mikami;S. Yamamoto;O. Kameya;N. Hirano
在L1157暗云中，我们发现了一个与冷IRAS源20386+6751相关的准直的双极CO外流。从周围气体的温度(≤10K)开始，流向流出蓝叶的气体动温上升到-30K；这个高温区与蓝叶是非常局部化的。HCO+、HCN和NH3谱线向蓝色CO叶呈现蓝移和宽线轮廓。此外，它们的分布与蓝叶相似
In the L1157 dark cloud, a well-collimated bipolar CO outflow associated with a cold IRAS source 20386+6751 have been discovered. The gas kinetic temperature toward the blue lobe of the outflow rises to-30 K from the temperature of the surrounding gas (≤10 K); this high temperature region is very localized with the blue lobe. The HCO + , HCN, and NH3 lines show blueshifted and broad-line profiles toward the blue CO lobe. Furthermore, their distributions are similar to that of the blue lobe