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| Gravitational collapse and accretion flows in the hub filament system G323.46-0.08 | |
Ma, Yingxiu1,2 ; Zhou, Jianjun1,3,4; Esimbek, Jarken1,3,4; Baan, Willem1,5; Li, Dalei1,2,3,4; Tang, Xindi1,2,3,4; He, Yuxin1,2,3,4; Ji, Weiguang1; Zhou, Dongdong1; Wu, Gang6; Tursun, Kadirya1; Komesh, Toktarkhan7,8
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| 2023-07-27 | |
| Source Publication | ASTRONOMY & ASTROPHYSICS
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| ISSN | 0004-6361 |
| Volume | 676Pages:A15 |
| Contribution Rank | 1 |
| Abstract | We studied the hub-filament system G323.46-0.08 based on archival molecular line data from the SEDIGISM(13)CO survey and infrared data from the GLIMPSE, MIPS, and Hi-GAL surveys. G323.46-0.08 consists of three filaments, F-north, F-west, and F-south, that converge toward the central high-mass clump AGAL323.459-0.079. F-west and Part 1 of the F-south show clear large-scale velocity gradients 0.28 and 0.44 km s(-1) pc(-1), respectively. They seem to be channeling materials into AGAL 323.459-0.079. The minimum accretion rate was estimated to be 1216 M circle dot Myr(-1). A characteristic V-shape appears around AGAL323.459-0.079 in the PV diagram, which traces the accelerated gas motions under gravitational collapse. This has also been supported by model fitting results. All three filaments are supercritical and they have fragmented into many dense clumps. The seesaw patterns near most dense clumps in the PV diagram suggests that mass accretion also occurs along the filament toward the clumps. Our results show that filamentary accretion flows appear to be an important mechanism for supplying the materials necessary to form the central high-mass clump AGAL 323.459-0.079 and to propel the star forming activity taking place therein. |
| Keyword | ISM: clouds ISM: kinematics and dynamics ISM: individual objects: G323.46-0.08 stars: formation radio lines: ISM |
| DOI | 10.1051/0004-6361/202346248 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | HI-GAL ; GALACTIC PLANE ; STAR-FORMATION ; SOURCE CATALOG ; DARK CLOUDS ; FRAGMENTATION |
| Funding Project | National Key Ramp ; D Program of China[2022YFA1603103] ; National Natural Science foundation of China (NSFC)[11973076] ; NSFC[12173075] ; NSFC[12103082] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2022D01E06] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[2022D01A359] ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region[2022TSYCLJ0005] ; Chinese Academy of Sciences (CAS) Light of West China Program[2020-XBQNXZ-017] ; Chinese Academy of Sciences (CAS) Light of West China Program[2021-XBQNXZ-028] ; Chinese Academy of Sciences (CAS) Light of West China Program[2022-XBJCTD-003] ; Chinese Academy of Sciences (CAS) Light of West China Program[xbzg-zdsys-202212] ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region[2022E01050] ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan[AP13067768] ; Chinese Academy of Sciences President International Fellowship Initiative[2022VMA0019] ; Chinese Academy of Sciences President International Fellowship Initiative[2023VMA0030] |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001039074700006 |
| Publisher | EDP SCIENCES S A |
| Funding Organization | National Key Ramp ; D Program of China ; National Natural Science foundation of China (NSFC) ; NSFC ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; Tianshan Talent Program of Xinjiang Uygur Autonomous Region ; Chinese Academy of Sciences (CAS) Light of West China Program ; Regional Collaborative Innovation Project of Xinjiang Uyghur Autonomous Region ; Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan ; Chinese Academy of Sciences President International Fellowship Initiative |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5372 |
| Collection | 射电天文研究室_恒星形成与演化研究团组 |
| Corresponding Author | Ma, Yingxiu; Zhou, Jianjun; Esimbek, Jarken |
| Affiliation | 1.Chinese Acad Sci, XingJiang Astron Observ, Urumqi 830011, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Radio Astron, Urumqi 830011, Peoples R China 4.Xinjiang Key Lab Radio Astrophys, Urumqi 830011, Peoples R China 5.ASTRON, Netherlands Inst Radio Astron, NL-7991 PD Dwingeloo, Netherlands 6.Max Planck Inst Radioastron, Hugel 69, D-53121 Bonn, Germany 7.Nazarbayev Univ, Energet Cosmos Lab, Astana 010000, Kazakhstan 8.Al Farabi Kazakh Natl Univ, Fac Phys & Technol, Alma Ata 050040, Kazakhstan |
| Recommended Citation GB/T 7714 | Ma, Yingxiu,Zhou, Jianjun,Esimbek, Jarken,et al. Gravitational collapse and accretion flows in the hub filament system G323.46-0.08[J]. ASTRONOMY & ASTROPHYSICS,2023,676:A15. |
| APA | Ma, Yingxiu.,Zhou, Jianjun.,Esimbek, Jarken.,Baan, Willem.,Li, Dalei.,...&Komesh, Toktarkhan.(2023).Gravitational collapse and accretion flows in the hub filament system G323.46-0.08.ASTRONOMY & ASTROPHYSICS,676,A15. |
| MLA | Ma, Yingxiu,et al."Gravitational collapse and accretion flows in the hub filament system G323.46-0.08".ASTRONOMY & ASTROPHYSICS 676(2023):A15. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Ma-2023-Gravitationa（8131KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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