PMO OpenIR
红外暗云g792038的性质
吴凌翔; 杨戟
2005
Source Publication天文学报
ISSN0001-5245
Volume046Issue:002Pages:136
Abstract对MSX红外暗云G79.2+0.38的11′×7′的区域范围进行了^12CO(1—0)、^13CO(1—0)和C^18O(1—0)谱线的同时观测.观测到的两个C^18O(1-0)谱线所界定的云核峰值分布分别对应MSXA波段的两块高消光区域.该区域的氢分子柱密度N(H2)-(5—12)×10^22cm^-2,平均密度n-(3±1)×10^4cm^-3.两块分子云核的^13CO的线尺度分别是1.7和1.2pc,而C^18O的线尺度分别是1.2和0.6pc,它们包含的质量为2×10^2-2×10^3M⊙,分子云核的视向平均密度结构可用幂函数n^-(p)-p^-0.34±0.02表征.^13CO和C^18O的丰度和典型的光学暗云相比低了4至11倍,但是目前还没有证据表明^13CO和C^18O的相对丰度比X13/18随柱密度有显著变化.
Language英语
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/31398
Collection中国科学院紫金山天文台
Affiliation中国科学院紫金山天文台
First Author Affilication中国科学院紫金山天文台
Recommended Citation
GB/T 7714
吴凌翔,杨戟. 红外暗云g792038的性质[J]. 天文学报,2005,046(002):136.
APA 吴凌翔,&杨戟.(2005).红外暗云g792038的性质.天文学报,046(002),136.
MLA 吴凌翔,et al."红外暗云g792038的性质".天文学报 046.002(2005):136.
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