中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Searching for further evidence for cloud-cloud collisions in L1188

文献类型:期刊论文

AuthorGong, 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
SourceASTRONOMY & ASTROPHYSICS
Issued Date2019-12-12
Volume632Pages:16
ISSN0004-6361
KeywordISM clouds ISM kinematics and dynamics radio lines ISM ISM molecules ISM individual objects L1188
DOI10.1051/0004-6361/201936824
Corresponding AuthorGong, Y.(ygong@mpifr-bonn.mpg.de)
English AbstractIn 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 KeywordYOUNG STELLAR OBJECTS ; SPECTRAL ENERGY-DISTRIBUTIONS ; PERSISTENT COSMIC WEB ; WATER MASER SURVEY ; FILAMENTARY STRUCTURE ; ISOLATING SIGNATURES ; KELVIN-HELMHOLTZ ; SIO EMISSION ; NORTHERN SKY ; DENSE CORES
WOS Research AreaAstronomy & Astrophysics
Language英语
WOS IDWOS:000502386900003
PublisherEDP SCIENCES S A
源URL[http://libir.pmo.ac.cn/handle/332002/35340]  
Collection中国科学院紫金山天文台
Corresponding AuthorGong, Y.
Affiliation1.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
Recommended Citation
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,2019,632:16.
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,632,16.
MLA Gong, Y.,et al."Searching for further evidence for cloud-cloud collisions in L1188".ASTRONOMY & ASTROPHYSICS 632(2019):16.

入库方式: OAI收割

来源:紫金山天文台

浏览0
下载0
收藏0
其他版本

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.