Atomic Carbon and CO Isotope Emission in the Vicinity of DR15

Material type: その他

Author: OKA, Tomoharuほか

Publisher: University of Chicago Press

Publication date: 2001-09

Material Format: Digital

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Note (General)：: 出版タイプ： AOWe present observations of the 3P1-3P0 fine-structure transition of atomic carbon [CI], the J=3-2 transition of CO, and the J=1-0 transitions...

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Material Type: その他
Title: Atomic Carbon and CO Isotope Emission in the Vicinity of DR15
Author/Editor: OKA, Tomoharu
YAMAMOTO, Satoshi
IWATA, Mitsuhiro
MAEZAWA, Hiroyuki
IKEDA, Masafumi
ITO, Tetsuya
KAMEGAI, Kazuhisa
SAKAI, Takeshi
SEKIMOTO, Yutaro
TATEMATSU, Ken-ichi
ARIKAWA, Yuji
ASO, Yoshiyuki
NOGUCHI, Takashi
SHI, Sheng-Cai
MIYAZAWA, Keisuke
SAITO, Shuji
OZEKI, Hiroyuki
FUJIWARA, Hideo
OHISHI, Masatoshi
INATANI, Junji
Author Heading: OKA, Tomoharu
YAMAMOTO, Satoshi
IWATA, Mitsuhiro
MAEZAWA, Hiroyuki
IKEDA, Masafumi
ITO, Tetsuya
KAMEGAI, Kazuhisa
SAKAI, Takeshi
SEKIMOTO, Yutaro
TATEMATSU, Ken-ichi
ARIKAWA, Yuji
ASO, Yoshiyuki
NOGUCHI, Takashi
SHI, Sheng-Cai
MIYAZAWA, Keisuke
SAITO, Shuji
OZEKI, Hiroyuki
FUJIWARA, Hideo
OHISHI, Masatoshi
INATANI, Junji
Publication, Distribution, etc.: University of Chicago Press
Publication Date: 2001-09
Publication Date (W3CDTF): 2001
Periodical title: Astrophysical Journal
No. or year of volume/issue: 558
Volume: 558
Pages: 176-184
ISSN (Periodical Title): ISSN : 0004-637X
Subject Heading: HII regions — ISM
atoms — ISM
molecules—radio lines
ISM
Target Audience: 一般
Note (General): 出版タイプ： AO
We present observations of the 3P1-3P0 fine-structure transition of atomic carbon [CI], the J=3-2 transition of CO, and the J=1-0 transitions of 13CO and C18O toward DR15, an HII region associated with two mid-infrared dark clouds (IRDCs). The 13CO and C18O J=1-0 emissions closely follow the dark patches seen in optical wavelength, showing two self-gravitating molecular cores with masses of 2000 and 900 M., respectively, at the positions of the catalogued IRDCs. Our data show a rough spatial correlation between [CI] and 13CO J=1-0. Bright [CI] emission occurs in the relatively cold gas behind the molecular cores but does not occur in either highly excited gas traced by CO J=3-2 emission or in the HII region/molecular cloud interface. These results are inconsistent with those predicted by standard photodissociation region models, suggesting an origin for interstellar atomic carbon unrelated to photodissociation processes.
Related Material (DOI): 10.1086/321536
https://doi.org/10.1086/321536
Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）
https://irdb.nii.ac.jp
Original Data Provider (Database): 福井大学 : 福井大学学術機関リポジトリ