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L1188: A Promising Candidate for Cloud-Cloud Collisions Triggering the Formation of Low-and Intermediate-mass Stars
Gong, Yan1; Fang, Min; Mao, Ruiqing; Zhang, Shaobo; Wang, Yuan; Su, Yang; Chen, Xuepeng; Yang, Ji; Wang, Hongchi; Lu, Dengrong
2017-01-20
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume835Issue:1Pages:6
Corresponding AuthorGong, Yan(ygong@pmo.ac.cn)
AbstractWe 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.
KeywordISM: clouds ISM: kinematics and dynamics radio lines: ISM stars: formation
DOI10.3847/2041-8213/835/1/L14
WOS KeywordYOUNG STELLAR OBJECTS ; MOLECULAR CLOUDS ; GRAVITATIONAL-INSTABILITY ; ISOLATING SIGNATURES ; CLUSTER FORMATION ; RADIO ASTRONOMY ; FORMING REGIONS ; FORMATION RATES ; LDN 1188 ; EVOLUTION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000394612700001
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/23229
Collection中国科学院紫金山天文台
Corresponding AuthorGong, Yan
Affiliation1.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
Recommended Citation
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.
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