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| Molecular environs and triggered star formation around the large Galactic infrared bubble N 24 | |
Li, Xu1,2 ; Esimbek, Jarken1,3; Zhou, Jianjun1,3; Baan, W. A.1,4; Ji, Weiguang1; Tang, Xindi1,3; Wu, Gang1,3; Tang, Xiaoke1,2; Li, Qiang1,2; Ma, Yingxiu1; Sailanbek, Serikbek1,2,5; Li, Dalei1,3; Alimbetova, Dina5
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| 2019-08-01 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 487Issue:2Pages:1517-1528 |
| Contribution Rank | 1 |
| Abstract | A multi-wavelength analysis of the large Galactic infrared bubble N24 is presented in this paper in order to investigate the molecular and star-formation environment around expanding HII regions. Using archival data from Herschel and ATLASGAL, the distribution and physical properties of the dust over the entire bubble are studied. Using the Clumpfind2d algorithm, 23 dense clumps are identified, with sizes and masses in the range 0.65-1.73 pc and 600-16 300 M-circle dot, respectively. To analyse the molecular environment in N24, observations of NH3 (1,1) and (2,2) were carried out using the Nanshan 26-m radio telescope. Analysis of the kinetic temperature and gravitational stability of these clumps suggests gravitational collapse in several of them. The mass-size distributions of the clumps and the presence of massive young protostars indicate that the shell of N24 is a region of ongoing massive-star formation. The compatibility of the dynamical and fragmentation timescales and the overabundance of young stellar objects and clumps on the rim suggest that the 'collect-and-collapse' mechanism is in play at the boundary of the bubble, but the existence of the infrared dark cloud at the edge of bubble indicates that a 'radiation-driven implosion' mechanism may also have played a role there. |
| Keyword | stars: formation stars: massive ISM: bubbles HII region ISM: individual objects: (N 24) |
| DOI | 10.1093/mnras/stz1269 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | H-II REGIONS ; DARK CLOUDS ; DENSE CORES ; OUTFLOWS ; BORDERS ; CO ; ATLASGAL ; COLLECT ; AMMONIA ; PROJECT |
| Funding Project | National Natural Science Foundation of China[11433008] ; National Natural Science Foundation of China[11703074] ; National Natural Science Foundation of China[11603063] ; Chinese Academy of Science 'Light of West China' Program[2018-XBQNXZ-B-024] ; Chinese Academy of Science 'Light of West China' Program[2016-QNXZ-B-23] ; Heavenly Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Chinese Academy of Sciences President's International Fellowship Initiative Grant[2019VMA0040] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:000474919700003 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | National Natural Science Foundation of China ; Chinese Academy of Science 'Light of West China' Program ; Heavenly Lake Hundred-Talent Program of Xinjiang Uygur Autonomous Region of China ; Chinese Academy of Sciences President's International Fellowship Initiative Grant |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/2879 |
| Collection | 射电天文研究室_恒星形成与演化研究团组 |
| Corresponding Author | Li, Xu; Esimbek, Jarken |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 4.Netherlands Inst Radio Astron, NL-7991 PD Dwingeloo, Netherlands 5.Al Farabi Kazakh Natl Univ, Fac Phys & Technol, Dept Solid State Phys & Nonlinear Phys, Alma Ata 050040, Kazakhstan |
| First Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Corresponding Author Affilication | Xinjiang Astronomical Observatory, Chinese Academy of Sciences |
| Recommended Citation GB/T 7714 | Li, Xu,Esimbek, Jarken,Zhou, Jianjun,et al. Molecular environs and triggered star formation around the large Galactic infrared bubble N 24[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2019,487(2):1517-1528. |
| APA | Li, Xu.,Esimbek, Jarken.,Zhou, Jianjun.,Baan, W. A..,Ji, Weiguang.,...&Alimbetova, Dina.(2019).Molecular environs and triggered star formation around the large Galactic infrared bubble N 24.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,487(2),1517-1528. |
| MLA | Li, Xu,et al."Molecular environs and triggered star formation around the large Galactic infrared bubble N 24".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 487.2(2019):1517-1528. |
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| Li-2019-Molecular en（4125KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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