The distribution of atomic carbon in the Orion giant molecular cloud 1

Masafumi Ikeda, Tomoharu Oka, Ken'ichi Tatematsu, Yutaro Sekimoto, Satoshi Yamamoto

研究成果: Article査読

81 被引用数 (Scopus)

抄録

The large-scale distribution of the C I (3P1- 3P0, 492 GHz) emission line from Orion A and B giant molecular clouds has been imaged with the Mount Fuji submillimeter-wave telescope. The total area observed is about 15 deg2. The overall spatial and velocity structure of the C I line is found to be similar to that of the 13CO (J = 1-0) line. The derived column density ratio N(C I)/N(CO) shows a large variation ranging from 0.2 to 2.9 toward the cloud edges, whereas it is relatively constant between 0.1 and 0.2 toward the interior region of the entire Orion clouds in both massive star-forming and dark cloud regions. This almost constant ratio suggests that C I can coexist with CO even in the deep inside of the molecular cloud.

本文言語English
ページ(範囲)467-485
ページ数19
ジャーナルAstrophysical Journal, Supplement Series
139
2
DOI
出版ステータスPublished - 2002 4月 1
外部発表はい

ASJC Scopus subject areas

  • 天文学と天体物理学
  • 宇宙惑星科学

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