中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
L1188: A Promising Candidate for Cloud-Cloud Collisions Triggering the Formation of Low-and Intermediate-mass Stars

文献类型:期刊论文

作者Gong, Yan1; Fang, Min; Mao, Ruiqing; Zhang, Shaobo; Wang, Yuan; Su, Yang; Chen, Xuepeng; Yang, Ji; Wang, Hongchi; Lu, Dengrong
刊名ASTROPHYSICAL JOURNAL LETTERS
出版日期2017-01-20
卷号835期号:1页码:6
ISSN号2041-8205
关键词ISM: clouds ISM: kinematics and dynamics radio lines: ISM stars: formation
DOI10.3847/2041-8213/835/1/L14
通讯作者Gong, Yan(ygong@pmo.ac.cn)
英文摘要We present a new large-scale (2 degrees x 2 degrees) simultaneous (CO)-C-12, (CO)-C-13, and (CO)-O-18 (J = 1-0) mapping of L1188 with the Purple Mountain Observatory 13.7 m telescope. Our observations have revealed that L1188 consists of two nearly orthogonal filamentary molecular clouds at two clearly separated velocities. Toward the intersection showing large velocity spreads, we find several bridging features connecting the two clouds in velocity, and an open arc structure that exhibits high excitation temperatures, enhanced (CO)-C-12 and (CO)-C-13 emission, and broad (CO)-C-12 line wings. This agrees with the scenario that the two clouds are colliding with each other. The distribution of young stellar object (YSO) candidates implies an enhancement of star formation in the intersection of the two clouds. We suggest that a cloud-cloud collision happened in L1188 about 1 Myr ago, possibly triggering the formation of low-and intermediate-mass YSOs in the intersection.
WOS关键词YOUNG STELLAR OBJECTS ; MOLECULAR CLOUDS ; GRAVITATIONAL-INSTABILITY ; ISOLATING SIGNATURES ; CLUSTER FORMATION ; RADIO ASTRONOMY ; FORMING REGIONS ; FORMATION RATES ; LDN 1188 ; EVOLUTION
WOS研究方向Astronomy & Astrophysics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000394612700001
源URL[http://libir.pmo.ac.cn/handle/332002/23228]  
专题中国科学院紫金山天文台
通讯作者Gong, Yan
作者单位1.Chinese Acad Sci, Purple Mt Observ, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Acad Sci, Key Lab Radio Astron, 2 West Beijing Rd, Nanjing 210008, Jiangsu, Peoples R China
推荐引用方式
GB/T 7714
Gong, Yan,Fang, Min,Mao, Ruiqing,et al. L1188: A Promising Candidate for Cloud-Cloud Collisions Triggering the Formation of Low-and Intermediate-mass Stars[J]. ASTROPHYSICAL JOURNAL LETTERS,2017,835(1):6.
APA Gong, Yan.,Fang, Min.,Mao, Ruiqing.,Zhang, Shaobo.,Wang, Yuan.,...&Lu, Dengrong.(2017).L1188: A Promising Candidate for Cloud-Cloud Collisions Triggering the Formation of Low-and Intermediate-mass Stars.ASTROPHYSICAL JOURNAL LETTERS,835(1),6.
MLA Gong, Yan,et al."L1188: A Promising Candidate for Cloud-Cloud Collisions Triggering the Formation of Low-and Intermediate-mass Stars".ASTROPHYSICAL JOURNAL LETTERS 835.1(2017):6.

入库方式: OAI收割

来源:紫金山天文台

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