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

doi:10.5303/JKAS.2014.47.5.179

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

^*Corresponding author for this work

Department of Earth Sciences (Include Institute of Marine Environmental Science and Technology)

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	179-185
Number of pages	7
Journal	Journal of the Korean Astronomical Society
Volume	47
Issue number	5
DOIs	https://doi.org/10.5303/JKAS.2014.47.5.179
Publication status	Published - 2014 Oct 1

Keywords

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

ASJC Scopus subject areas

Astronomy and Astrophysics
Space and Planetary Science

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10.5303/JKAS.2014.47.5.179

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title = "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",

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.",

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

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T1 - 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

AU - Minh, Young Chol

AU - Kim, Kee Tae

AU - Yan, Chi Hung

AU - Park, Yong Sun

AU - Lee, Seokho

AU - Lal, Dharam Vil

AU - Hasegawa, Tatsuhiko

AU - Zhang, X. Z.

AU - Kuan, Yi Jeng

PY - 2014/10/1

Y1 - 2014/10/1

N2 - 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.

AB - 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.

KW - ISM: Abundances

KW - ISM: HII regions

KW - ISM: Molecules

KW - Individual: Sh 2-104

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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

Abstract

Keywords

ASJC Scopus subject areas

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