言語種別 英語 発行・発表の年月 2019/02 形態種別 学術雑誌 査読 査読あり 標題 Molecular Cloud Cores in the Galactic Center 50 km s‑1 Molecular Cloud   Molecular Cloud Cores in the Galactic Center 50 km s‑1 Molecular Cloud 執筆形態 共著 掲載誌名 Astrophysical Journal 掲載区分 国外 出版社・発行元 The American Astronomical Society 巻・号・頁 872(2),pp.121-146 担当範囲 Data Reduction, Discussion 著者・共著者 Uehara, Kenta; Tsuboi, Masato; Kitamura, Yoshimi; Miyawaki, Ryosuke; Miyazaki, Atsushi   Uehara, Kenta; Tsuboi, Masato; Kitamura, Yoshimi; Miyawaki, Ryosuke; Miyazaki, Atsushi 概要 We observed the whole of the 50MC with a high angular resolution (∼2.″0 × 1.″4) in Atacama Large Millimeter/submillimeter Array cycle 1 in the H13CO+ J = 1‑0 and C34S J = 2‑1 emission lines. We identified 241 and 129 bound cores with a virial parameter of less than 2, which are thought to be gravitationally bound, in the H13CO+ and C34S maps using the clumpfind algorithm, respectively. In the CCC region, the bound H13CO+ and C34S cores are 119 and 82, whose masses are 68% and 76% of those in the whole 50MC, respectively. The distribution of the core number and column densities in the CCC are biased to larger densities than those in the non-CCC region. The distributions indicate that the CCC compresses the molecular gas and increases the number of the dense bound cores.