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Formation and evolution of new primordial open cluster groups: Feedback-driven star formation

文献类型：期刊论文

作者Liu, Guimei5,6; Zhang, Yu5,6; Zhong, Jing4; Chen, Li4,5; Meng XC(孟祥存)2,3; Wu, Kai1
刊名ASTRONOMY & ASTROPHYSICS
出版日期2025-04-09
卷号696
关键词open clusters and associations: general
ISSN号0004-6361
DOI10.1051/0004-6361/202452774
产权排序第4完成单位
文献子类Article
英文摘要Context. Open cluster (OC) groups are collections of spatially close OCs originating from the same giant molecular cloud. The formation mechanism of the OC groups remains unclear due to limited sample size and data precision. Recent advances in astrometric data from the Gaia mission have provided an unprecedented opportunity to study OC groups in detail. Aims. We aim to extend the sample of OC groups and explore the formation and evolution mechanisms of the newly identified pri-mordial OC groups. We focus on the impact of stellar feedback events occurring near the OC groups and their role in triggering star formation within these groups. Methods. We identified the OC group using Gaia data by analyzing the close correlations in three-dimensional (3D) spatial, 3D velocity, and age. We conducted N-body simulations to trace the dynamical evolution of these groups and obtained the birthplace of OCs. A region where supernova (SN) explosions most likely occurred was predicted around the birthplaces of OC groups, based on the correlation between OC ages and their separation from the possible SN explosion sites. We also traced the orbits of pulsars (PSRs) using the Galactic potential model to probe their association with predicted SN explosion regions. Results. We report the detection of four OC groups. The member OCs within each group are spatially proximate and exhibit similar velocities. The age spread of these OC groups is within 30 Myr, consistent with the duration of continuous star formation events. Dynamical simulations show that these OC groups gradually disperse over time, eventually evolving into independent OCs. The inference can be made that there exist specific regions surrounding Group 1 and Group 2 where the occurrence of SN explosions is highly probable. The strong correlations between OC ages and their separation from predicted SN explosion sites reveal a notable age gradient outward from the SN explosions. Additionally, we detected three PSRs near Group 1 and 26 PSRs near Group 2, whose birthplaces align with the predicted SN explosions regions. Conclusions. The member OCs within each OC group originate from the same molecular cloud, forming through a process of sequential star formation. We propose a star formation scenario in which multiple SN explosions triggered the formation of Group 1 and Group 2. Our results support the supernova-triggered star formation process and also reinforce the hierarchical star formation model, highlighting the multi-scale interactions that drive star and open cluster formation.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE
WOS关键词STELLAR SNAKE ; DISCOVERY ; BINARY ; I. ; ORION ; SIMULATIONS ; VALIDATION ; SUPERNOVAE ; B2020+28 ; ASTROPY
资助项目National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12090040]; National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12090042]; National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12073060]; National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12333008]; National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12288102]; National Natural Science Foundation of China (NSFC)[2022-XBQNXZ013]; Chinese Academy of Sciences (CAS) Light of West China Program[2022D01E86]; Natural Science Foundation of Xinjiang Uygur Autonomous Region[ZYYD2025QY27]; Central Guidance for Local Science and Technology Development Fund[2023YFE0102300]; National Key R&D Inter governmental Cooperation Program of China[2023TSYCCX0101]; Tianshan Talent Training Program[2019YFA0405501]; National Key R&D Program of China; Youth Innovation Promotion Association CAS[CMS-CSST-2021-A08]; China Manned Space Project[22dz1202400]; Science and Technology Commission of Shanghai Municipality[20590760800]; Shanghai Science and Technology Program; Program of Shanghai Academic/Technology Research Leader[202302AN360001]; International Centre of Supernovae, Yunnan Key Laboratory[202401BC070007]; International Centre of Supernovae, Yunnan Key Laboratory[202201BC070003]; Yunnan Fundamental Research Projects[Sp 345/24-1]; DFG
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001463199500003
出版者EDP SCIENCES S A
资助机构National Natural Science Foundation of Chinahttp://dx.doi.org/10.13039/501100001809[12090040, 12090042, 12073060, 12333008, 12288102] ; National Natural Science Foundation of China (NSFC)[2022-XBQNXZ013] ; Chinese Academy of Sciences (CAS) Light of West China Program[2022D01E86] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[ZYYD2025QY27] ; Central Guidance for Local Science and Technology Development Fund[2023YFE0102300] ; National Key R&D Inter governmental Cooperation Program of China[2023TSYCCX0101] ; Tianshan Talent Training Program[2019YFA0405501] ; National Key R&D Program of China ; Youth Innovation Promotion Association CAS[CMS-CSST-2021-A08] ; China Manned Space Project[22dz1202400] ; Science and Technology Commission of Shanghai Municipality[20590760800] ; Shanghai Science and Technology Program ; Program of Shanghai Academic/Technology Research Leader[202302AN360001] ; International Centre of Supernovae, Yunnan Key Laboratory[202401BC070007, 202201BC070003] ; Yunnan Fundamental Research Projects[Sp 345/24-1] ; DFG
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28256]  
专题云南天文台_大样本恒星演化研究组
作者单位1.Astronomisches Rechen-Institut, Zentrum für Astronomie der Universität Heidelberg,Mönchhofstr. 12–14, 69120 Heidelberg, Germany
2.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, China;
3.Yunnan Observatories, CAS, PO Box 110, Kunming 650216, Yunnan, China;
4.Astrophysics Division, Shanghai Astronomical Observatory, Chinese Academy of Sciences, 80 Nandan Road, Shanghai 200030, China;
5.School of Astronomy and Space Science, University of Chinese Academy of Sciences,No. 19A, Yuquan Road, Beijing 100049, China;
6.XinJiang Astronomical Observatory, Chinese Academy of Sciences,150 Science 1-Street, Urumqi, Xinjiang 830011, China;
推荐引用方式
GB/T 7714		 Liu, Guimei,Zhang, Yu,Zhong, Jing,et al. Formation and evolution of new primordial open cluster groups: Feedback-driven star formation[J]. ASTRONOMY & ASTROPHYSICS,2025,696.
APA Liu, Guimei,Zhang, Yu,Zhong, Jing,Chen, Li,孟祥存,&Wu, Kai.(2025).Formation and evolution of new primordial open cluster groups: Feedback-driven star formation.ASTRONOMY & ASTROPHYSICS,696.
MLA Liu, Guimei,et al."Formation and evolution of new primordial open cluster groups: Feedback-driven star formation".ASTRONOMY & ASTROPHYSICS 696(2025).

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来源：云南天文台

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