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 H II region associated with the embedded cluster are measured from t...

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Bibliographic Details
Published inJournal of the Korean astronomical society Vol. 47; no. 5; pp. 179 - 185
Main Authors Minh, Young Chol, Kim, Kee-Tae, Yan, Chi-Hung, Park, Yong-Sun, Lee, Seokho, Lal, Dharam Vil, Hasegawa, Tatsuhiko, Zhang, X.Z, Kuan, Yi-Jeng
Format Journal Article
LanguageKorean
Published 2014
Subjects
ISM: HII regions
ISM: molecules
ISM: abundances
individual: Sh 2-104
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Summary: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 H II region associated with the embedded cluster are measured from the radio continuum observations. This source is found to be a typical Galactic UC H II 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 H II region.
Bibliography:KISTI1.1003/JNL.JAKO201432252667829
ISSN:1225-4614
2288-890X