膨胀h区气壳中分子团块及其相关超致密h区性质[2-104]

IF 1.1 4区物理与天体物理 Q3 ASTRONOMY & ASTROPHYSICS

Journal of the Korean Astronomical Society Pub Date : 2014-10-01 DOI:10.5303/JKAS.2014.47.5.179

Y. Minh, Kee-Tae Kim, Chi-Hung Yan, Yong-Sun Park, Seokho Lee, D. Lal, T. Hasegawa, X. Zhang, Y. Kuan

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引用次数: 1

摘要

我们研究了拥有年轻恒星团IRAS 20160+3636的分子团的物理和化学性质，该恒星团被认为是通过“收集和坍缩”过程形成的。UC Hii区域与嵌入星团相关的物理参数是通过射电连续体观测测量的。这个源被发现是一个典型的银河UC Hii区域，如果它被一颗恒星电离，它会有一颗B0.5型的激发恒星。我们得出该区域的CN/HCN丰度比大于1，这可能表明该团块受到来自Hii区域的紫外线辐射的影响。

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PROPERTIES OF THE MOLECULAR CLUMP AND THE ASSOCIATED ULTRACOMPACT H II REGION IN THE GAS SHELL OF THE EXPANDING H II REGION SH 2-104

We study the physical and chemical properties of the molecular clump hosting a young stellar cluster, IRAS 20160+3636, which is believed to have formed via the “collect and collapse” process. Physical parameters of the UC Hii region associated with the embedded cluster are measured from the radio continuum observations. This source is found to be a typical Galactic UC Hii region, with a B0.5 type exciting star, if it is ionized by a single star. We derive a CN/HCN abundance ratio larger than 1 over this region, which may suggest that this clump is being affected by the UV radiation from the Hii region.

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来源期刊

Journal of the Korean Astronomical Society 地学天文-天文与天体物理

CiteScore

1.30

自引率

10.00%

发文量

审稿时长

>12 weeks

期刊介绍： JKAS is an international scientific journal publishing papers in all fields of astronomy and astrophysics. All manuscripts are subject to the scrutiny of referees. Manuscripts submitted to JKAS must comply with the ethics policy of JKAS. Six regular issues are published each year on February 28, April 30, June 30, August 31, October 31, and December 31. One year''s issues compose one volume.