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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-C1,2; Wu, Y.1,2; Zhang, C.1,3; Chen, X.4; Lin, L-H5,6,7; Qin, S-L3; Liu, T.8; Henkel, C.9,10; Wang, J.8; Liu, H-L11
刊名ASTROPHYSICAL JOURNAL
出版日期2021-05-01
卷号912期号:2页码:18
ISSN号0004-637X
DOI10.3847/1538-4357/abee73
通讯作者Liu, X-C(1501110219@pku.edu.cn)
英文摘要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 lambda similar to 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 (CO)-O-18 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.
WOS关键词MASS PROTOSTAR IRAS-04368+2557 ; SPECTRAL ENERGY-DISTRIBUTIONS ; MOLECULAR LINE OBSERVATIONS ; C2D SMALL CLOUDS ; STAR-FORMATION ; DENSE CORES ; C3H2 ; IDENTIFICATION ; CLUSTER ; TMC-1
资助项目National Key R&D Program of China[2017YFA0402600] ; NSFC[12033005] ; NSFC[11988101] ; NSFC[11433008] ; NSFC[11373009] ; NSFC[11503035] ; NSFC[11573036] ; CONICYT project Basal[AFB-170002] ; JSPS KAKENHI[20H05645] ; National Key Research and Development Program of China[2017YFA0402702] ; National Key Research and Development Program of China[2019YFA0405100] ; National Science Foundation of China[11973013] ; National Science Foundation of China[11721303] ; Kavli Institute for Astronomy and Astrophysics, Peking University[7101502287] ; Science and Technology Facilities Council of the United Kingdom ; PCI-ANID[REDES190113]
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000651780400001
资助机构National Key R&D Program of China ; NSFC ; CONICYT project Basal ; JSPS KAKENHI ; National Key Research and Development Program of China ; National Science Foundation of China ; Kavli Institute for Astronomy and Astrophysics, Peking University ; Science and Technology Facilities Council of the United Kingdom ; PCI-ANID
源URL[http://ir.xao.ac.cn/handle/45760611-7/4019]  
专题恒星形成与演化研究团组
通讯作者Liu, X-C
作者单位1.Peking Univ, Sch Phys, Dept Astron, Beijing 100871, Peoples R China
2.Peking Univ, Kavli Inst Astron & Astrophys, 5 Yiheyuan Rd, Beijing 100871, Peoples R China
3.Yunnan Univ, Dept Astron, Kunming 650091, Yunnan, Peoples R China
4.GuangZhou Univ, Ctr Astrophys, Guangzhou 510006, Peoples R China
5.Chinese Acad Sci, Purple Mt Observ, 10 Yuanhua Rd, Nanjing 210033, Peoples R China
6.Chinese Acad Sci, Key Lab Radio Astron, 10 Yuanhua Rd, Nanjing 210033, Peoples R China
7.Univ Sci & Technol China, Sch Astron & Space Sci, 96 Jinzhai Rd, Hefei 230026, Peoples R China
8.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China
9.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
10.King Abdulaziz Univ, Dept Astron & Space Sci, POB 80203, Jeddah 21589, Saudi Arabia
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]. ASTROPHYSICAL JOURNAL,2021,912(2):18.
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.ASTROPHYSICAL JOURNAL,912(2),18.
MLA Liu, X-C,et al."A Search for Cloud Cores Affected by Shocked Carbon Chain Chemistry in L1251".ASTROPHYSICAL JOURNAL 912.2(2021):18.

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