A Search for Cloud Cores Affected by Shocked Carbon Chain Chemistry in L1251
文献类型：期刊论文
| 作者 | Liu,X.-C.19,20; Wu,Y.19,20; Zhang,C.19,21; Chen,X.2; Lin,L.-H.3,4,5; Qin,S.-L.21; Liu,T.6; Henkel,C.1,7; Wang,J.6; Liu,H.-L.8 |
| 刊名 | The Astrophysical Journal
 |
| 出版日期 | 2021-05-01 |
| 卷号 | 912期号:2 |
| 关键词 | Chemical abundances Astrochemistry Star-forming regions Molecular clouds Infrared dark clouds Stellar jets Stellar-interstellar interactions |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/abee73 |
| 英文摘要 | Abstract We searched for shocked carbon chain chemistry (SCCC) sources with C3S abundances surpassing those of HC5N toward the dark cloud L1251, using the Effelsberg telescope at the K band (18–26 GHz). L1251-1 and L1251-3 are identified as the most promising SCCC sources. The two sources harbor young stellar objects. We conducted mapping observations toward L1251-A, the western tail of L1251, at λ ～ 3 mm with the Purple Mountain Observatory 13.7 m and the Nobeyama Radio Observatory 45 m telescopes in lines of C2H, N2H+, CS, HCO+, SO, HC3N, and C18O as well as in CO 3–2 using the James Clerk Maxwell Telescope (JCMT). The spectral data were combined with archival data including Spitzer and Herschel continuum maps for further analysis. Filamentary substructures labeled as F1–F6 were extracted in L1251, with F1 being associated with L1251-A hosting L1251-1. The peak positions of dense gas traced by HCO+ are misaligned relative to those of the dust clumps. Episodic outflows are common in this region. The twisted morphology of F1 and velocity distribution along L1251-A may originate from stellar feedback. SCCC in L1251-1 may have been caused by outflow activities originated from the infrared source IRS1. The signposts of ongoing SCCC and the broadened line widths of C3S and C4H in L1251-1 as well as the distribution of HC3N are also related to outflow activities in this region. L1251-1 (IRS1) together with the previously identified SCCC source IRS3 demonstrate that L1251-A is an excellent region to study SCCC. |
| 语种 | 英语 |
| WOS记录号 | IOP:0004-637X-912-2-ABEE73 |
| 出版者 | The American Astronomical Society |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/58296]  |
| 专题 | 中国科学院国家天文台 |
| 通讯作者 | Liu,X.-C. |
| 作者单位 | 1.Department of Astronomy and Space Science, King Abdulaziz University, P.O. Box 80203, Jeddah 21589, Saudi Arabia 2.Center for Astrophysics, GuangZhou University, Guangzhou 510006, People’s Republic of China 3.Purple Mountain Observatory, Chinese Academy of Sciences, 10 Yuanhua Road, Nanjing 210033, People’s Republic of China 4.Key Laboratory of Radio Astronomy, Chinese Academy of Sciences, 10 Yuanhua Road, Nanjing 210033, People’s Republic of China 5.School of Astronomy and Space Science, University of Science and Technology of China, 96 Jinzhai Road, Hefei 230026, People’s Republic of China 6.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, People’s Republic of China 7.Max-Planck Institut für Radioastronomie, Auf dem Hügel 69, D-53121 Bonn, Germany 8.Departamento de Astronomía, Universidad de Concepción, Av. Esteban Iturra s/n, Distrito Universitario, 160-C, Chile 9.Purple Mountain Observatory, Qinghai Station, 817000, Delingha, People’s Republic of China 10.Nobeyama Radio Observatory, National Astronomical Observatory of Japan, National Institutes of Natural Sciences, 462-2 Nobeyama, Minamimaki, Minamisaku, Nagano 384-1305, Japan |
| 推荐引用方式 GB/T 7714 | Liu,X.-C.,Wu,Y.,Zhang,C.,et al. A Search for Cloud Cores Affected by Shocked Carbon Chain Chemistry in L1251[J]. The Astrophysical Journal,2021,912(2). |
| APA | Liu,X.-C..,Wu,Y..,Zhang,C..,Chen,X..,Lin,L.-H..,...&Xu,F.-W..(2021).A Search for Cloud Cores Affected by Shocked Carbon Chain Chemistry in L1251.The Astrophysical Journal,912(2). |
| MLA | Liu,X.-C.,et al."A Search for Cloud Cores Affected by Shocked Carbon Chain Chemistry in L1251".The Astrophysical Journal 912.2(2021). |
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来源：国家天文台
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