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Searching for further evidence for cloud-cloud collisions in L1188

文献类型：期刊论文

作者Gong, Y.6,7,8; Tang, X. D.5,8; Henkel, C.4,5,8; Menten, K. M.8; Mao, R. Q.6,7; Wang, Y.3; Lee, M-Y2; Zhu, W. S.1; Lin, Y.8; Zhang, S. B.6,7
刊名ASTRONOMY & ASTROPHYSICS
出版日期2019-12-12
卷号632页码:A115
ISSN号0004-6361
关键词ISM clouds ISM kinematics and dynamics radio lines ISM ISM molecules ISM individual objects L1188
DOI10.1051/0004-6361/201936824
产权排序3
英文摘要In order to search for further observational evidence of cloud-cloud collisions in one of the promising candidates, L1188, we carried out observations of multiple molecular lines toward the intersection region of the two nearly orthogonal filamentary molecular clouds in L1188. Based on these observations, we find two parallel filamentary structures, both of which have at least two velocity components being connected with broad bridging features. We also found a spatially complementary distribution between the two molecular clouds, as well as enhanced (CO)-C-13 emission and (CO)-C-12 self-absorption toward their abutting regions. At the most blueshifted velocities, we unveil a 1 pc-long arc ubiquitously showing (CO)-C-12 line wings. We discover two 22 GHz water masers, which are the first maser detections in L1188. An analysis of line ratios at a linear resolution of 0.2 pc suggests that L1188 is characterised by kinetic temperatures of 13-23 K and H-2 number densities of 10(3)-10(3.6) cm(-3). On the basis of previous theoretical predictions and simulations, we suggest that these observational features can be naturally explained by the scenario of a cloud-cloud collision in L1188, although an additional contribution of stellar feedback from low-mass young stellar objects cannot be ruled out.
WOS关键词YOUNG STELLAR OBJECTS ; SPECTRAL ENERGY-DISTRIBUTIONS ; PERSISTENT COSMIC WEB ; WATER MASER SURVEY ; FILAMENTARY STRUCTURE ; ISOLATING SIGNATURES ; KELVIN-HELMHOLTZ ; SIO EMISSION ; NORTHERN SKY ; DENSE CORES
资助项目National Key R&D Program of China[2017YFA0402700] ; National Key R&D Program of China[2017YFA0402702] ; National Natural Science Foundation of China (NSFC)[11127 903] ; NSFC[11673077] ; NSFC[11903070] ; NSFC[11433008] ; NSFC[11803091] ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of PR China ; Chinese Academy of Sciences President's International Fellowship Initiative[2019VMA0039] ; European Research Council[CSF-648505] ; European Union[730562] ; National Aeronautics and Space Administration ; Science and Technology Facilities Council of the United Kingdom
WOS研究方向Astronomy & Astrophysics
语种英语
出版者EDP SCIENCES S A
WOS记录号WOS:000502386900003
资助机构National Key R&D Program of China ; National Natural Science Foundation of China (NSFC) ; NSFC ; Heaven Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of PR China ; Chinese Academy of Sciences President's International Fellowship Initiative ; European Research Council ; European Union ; National Aeronautics and Space Administration ; Science and Technology Facilities Council of the United Kingdom
源URL[http://ir.xao.ac.cn/handle/45760611-7/3299]  
专题恒星形成与演化研究团组
通讯作者Gong, Y.
作者单位1.Sun Yat Sen Univ, Sch Phys & Astron, Zhuhai 519082, Peoples R China
2.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea
3.Max Planck Inst Astron, Konigstuhl 17, D-69117 Heidelberg, Germany
4.King Abdulaziz Univ, Fac Sci, Astron Dept, POB 80203, Jeddah 21589, Saudi Arabia
5.Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China
6.Chinese Acad Sci, Key Lab Radio Astron, 10 Yuanhua Rd, Nanjing 210033, Jiangsu, Peoples R China
7.Chinese Acad Sci, Purple Mt Observ, 10 Yuanhua Rd, Nanjing 210033, Jiangsu, Peoples R China
8.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany
推荐引用方式
GB/T 7714		 Gong, Y.,Tang, X. D.,Henkel, C.,et al. Searching for further evidence for cloud-cloud collisions in L1188[J]. ASTRONOMY & ASTROPHYSICS,2019,632:A115.
APA Gong, Y..,Tang, X. D..,Henkel, C..,Menten, K. M..,Mao, R. Q..,...&Yang, W. J..(2019).Searching for further evidence for cloud-cloud collisions in L1188.ASTRONOMY & ASTROPHYSICS,632,A115.
MLA Gong, Y.,et al."Searching for further evidence for cloud-cloud collisions in L1188".ASTRONOMY & ASTROPHYSICS 632(2019):A115.

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来源：新疆天文台

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