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First Embedded Cluster Formation in California Molecular Cloud
Xu Jin-Long1,2; Xu Ye3; Jiang Peng1,2; Zhu Ming1,2; Guan Xin1,2; Yu Naiping1; Zhang Guo-Yin1; Lu Deng-Rong3
2020-04-10
Source PublicationASTROPHYSICAL JOURNAL LETTERS
ISSN2041-8205
Volume893Issue:1Pages:6
Abstract

We performed a multi-wavelength observation toward the LkH alpha 101 embedded cluster and its adjacent 85 ' x60 ' region. The LkH alpha 101 embedded cluster is the first and only significant cluster in the California molecular cloud (CMC). These observations have revealed that the LkH alpha 101 embedded cluster is located just at the projected intersectional region of two filaments. One filament is the highest-density section of the CMC, the other is a new identified filament with a low-density gas emission. Toward the projected intersection, we find the bridging features connecting the two filaments in velocity, and identify a V-shaped gas structure. These agree with the scenario that the two filaments are colliding with each other. Using the Five-hundred-meter Aperture Spherical radio Telescope, we measured the radio recombination line velocity of the LkH alpha 101 H ii region to be 0.5 km s(-1), which is related to the velocity component of the CMC filament. Moreover, there are some young stellar objects (YSOs) distributed outside the intersectional region. We suggest that the cloud-cloud collision, together with the fragmentation of the main filament, may play an important role in the YSOs' formation of the cluster.

KeywordInterstellar clouds Star formation Dynamical evolution
DOI10.3847/2041-8213/ab830e
WOS KeywordYOUNG STELLAR OBJECTS ; STAR ; EMISSION
Indexed BySCI
Language英语
WOS Research AreaAstronomy & Astrophysics
WOS SubjectAstronomy & Astrophysics
WOS IDWOS:000526405700001
PublisherIOP PUBLISHING LTD
Citation statistics
Document Type期刊论文
Identifierhttp://libir.pmo.ac.cn/handle/332002/35994
Collection中国科学院紫金山天文台
Corresponding AuthorXu Jin-Long
Affiliation1.Chinese Acad Sci, Natl Astron Observ, Beijing 100101, Peoples R China
2.Chinese Acad Sci, Natl Astron Observ, CAS Key Lab FAST, Beijing 100101, Peoples R China
3.Chinese Acad Sci, Purple Mt Observ, Nanjing 210008, Peoples R China
Recommended Citation
GB/T 7714
Xu Jin-Long,Xu Ye,Jiang Peng,et al. First Embedded Cluster Formation in California Molecular Cloud[J]. ASTROPHYSICAL JOURNAL LETTERS,2020,893(1):6.
APA Xu Jin-Long.,Xu Ye.,Jiang Peng.,Zhu Ming.,Guan Xin.,...&Lu Deng-Rong.(2020).First Embedded Cluster Formation in California Molecular Cloud.ASTROPHYSICAL JOURNAL LETTERS,893(1),6.
MLA Xu Jin-Long,et al."First Embedded Cluster Formation in California Molecular Cloud".ASTROPHYSICAL JOURNAL LETTERS 893.1(2020):6.
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