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arXiv 1101.4258astro-ph.SR
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OMC-2/3中的C2H、HC3N和HNC观测

C2H, HC3N and HNC Observations in OMC-2/3

Qiang Liu, Ji Yang, Yan Sun, Ye Xu

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摘要：

首次在C_2H（1-0）、HC_3N（1 - 0 -9）和HNC（1-0）株系中定位了OMC-2/3区域。一般来说，从所有三种分子物种的排放揭示了一个扩展的晶体结构。C_2 H核的分布与1300 $μ$ m凝聚核的分布基本一致，表明C_2 H是研究分子云核结构的良好示踪剂。HNC追踪的核心质量相当平坦，范围为18.8至49.5 $M_{\odot}$，而C2 H追踪的核心质量跨度较大，范围为6.4至36.0 $M_{\odot}$。HNC和C2 H的线宽看起来非常相似，并且都比HC 3 N宽。这三条线的线宽都比来自暗云的线宽，这意味着前者比后者更活跃，并且由来自周围大质量恒星的风和紫外线辐射引起的湍流更大。

英文摘要：

For the first time, the OMC-2/3 region was mapped in C2H(1-0), HC3N(10-9) and HNC(1-0) lines. In general, the emissions from all the three molecular species reveal an extended filamentary structure. The distribution of C2H cores almost follows that of the 1300 $μ$m condensations, which might suggest that C2H is a good tracer to study the core structure of molecular clouds. The core masses traced by HNC are rather flat, ranging from 18.8 to 49.5 $M_{\odot}$, while present a large span for those from C2H, ranging from 6.4 to 36.0 $M_{\odot}$. The line widths of both HNC and C2H look very similar, and both are wider than that of HC3N. The line widths of the three lines are all wider than those from dark clouds, implying that the former is more active than the latter, and has larger turbulence caused by winds and UV radiation from the surrounding massive stars.

机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。

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