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

Young Chol Minh, Kee Tae Kim, Chi Hung Yan, Yong Sun Park, Seokho Lee, Dharam Vil Lal, Tatsuhiko Hasegawa, X. Z. Zhang, Yi Jeng Kuan

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)179-185
Number of pages7
JournalJournal of the Korean Astronomical Society
Volume47
Issue number5
DOIs
Publication statusPublished - 2014 Oct 1

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H II regions
clumps
shell
stars
Infrared Astronomy Satellite
gases
gas
chemical properties
physical properties
continuums
radiation
chemical property
physical property
radio

Keywords

  • ISM: Abundances
  • ISM: HII regions
  • ISM: Molecules
  • Individual: Sh 2-104

ASJC Scopus subject areas

  • Astronomy and Astrophysics
  • Space and Planetary Science

Cite this

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. / 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.

In: Journal of the Korean Astronomical Society, Vol. 47, No. 5, 01.10.2014, p. 179-185.

Research output: Contribution to journalArticle

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. / 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. In: Journal of the Korean Astronomical Society. 2014 ; Vol. 47, No. 5. pp. 179-185.
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AU - Lee, Seokho

AU - Lal, Dharam Vil

AU - Hasegawa, Tatsuhiko

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