タイトル(掲載誌)The Astrophysical Journal
一般注記A distribution of the neutral carbon atom (C i) in Heiles cloud 2 (HCL2) has been investigated with the Mount Fuji submillimeter-wave telescope. A region of 1.2 deg2 covering a whole region of HCL2 has been mapped with the 3P1?3P0 fine-structure line (492 GHz) of C i. The global extent of the C i emission is similar to that of 13CO, extending from southeast to northwest. However, the C i intensity is found to be rather weak in dense cores traced by the line of C18O. On the other hand, strong C i emission is observed in a south part of HCL2 in which the C18O intensity is fairly weak. The C i/CO abundance ratio is greater than 0.8 for the C i peak, whereas it is 0.1 for the dense cores such as the cyanopolyyne peak. The C i?rich cloud found in the south part may be in the early evolutionary stage of dense core formation where C i has not yet been converted completely into CO. This result implies that formation of dense cores is taking place from north to south in HCL2.
一次資料へのリンクURLhttps://u-fukui.repo.nii.ac.jp/?action=repository_action_common_download&item_id=22523&item_no=1&attribute_id=22&file_no=1
著作権情報〓 1999 American Astronomical Society
連携機関・データベース国立情報学研究所 : 学術機関リポジトリデータベース(IRDB)(機関リポジトリ)