Study of 26 Galactic Open Clusters with Extended Main-sequence Turnoffs

doi:10.1088/1674-4527/ad3dc5

YNAO OpenIR > 大样本恒星演化研究组

	Study of 26 Galactic Open Clusters with Extended Main-sequence Turnoffs
	Deng YY(邓阳阳)1,2,3 ; Li, Zhong-Mu 3
发表期刊	RESEARCH IN ASTRONOMY AND ASTROPHYSICS
	2024-06-01
卷号	24 期号:6
DOI	10.1088/1674-4527/ad3dc5
产权排序	第1完成单位
收录类别	SCI
关键词	(stars:) binaries: general Galaxy: fundamental parameters (Galaxy:) open clusters and associations: general (stars:) Hertzsprung-Russell and C-M-diagrams
摘要	Recent studies indicate that some Galactic open clusters (OCs) exhibit extended main-sequence turnoff (eMSTO) in their color-magnitude diagrams (CMDs). However, the number of Galactic OCs with eMSTO structures detected so far is limited, and the reasons for their formation are still unclear. This work identifies 26 Galactic OCs with undiscovered eMSTOs and investigates the causes of these features. Stellar population types and fundamental parameters of cluster samples are acquired using CMD fitting methods. Among them, the results of 11 OCs are reliable as the observed CMDs are well-reproduced. We propose the crucial role of stellar binarity and confirm the importance of stellar rotation in reproducing eMSTO morphologies. The results also show that the impact of age spread is important, as it can adequately explain the structure of young OCs and fit the observed CMDs of intermediate-age OCs better.
资助项目	Yunnan Academician Workstation of Wang Jingxiu[202005AF150025]; China Manned Space Project[ghfund202302019167]; Natural Science Foundation of Yunnan Province[202201BC070003]
项目资助者	Yunnan Academician Workstation of Wang Jingxiu[202005AF150025] ; China Manned Space Project[ghfund202302019167] ; Natural Science Foundation of Yunnan Province[202201BC070003]
语种	英语
学科领域	天文学 ; 恒星与银河系
文章类型	Article
出版者	NATL ASTRONOMICAL OBSERVATORIES, CHIN ACAD SCIENCES
出版地	20A DATUN RD, CHAOYANG, BEIJING, 100101, PEOPLES R CHINA
ISSN	1674-4527
URL	查看原文
WOS记录号	WOS:001227775600001
WOS研究方向	Astronomy & Astrophysics
WOS类目	Astronomy & Astrophysics
关键词[WOS]	COLOR-MAGNITUDE DIAGRAM ; STELLAR ROTATION ; STAR-CLUSTERS ; BINARY FRACTION ; LISC CATALOG ; EVOLUTION ; ISOCHRONES ; TRACKS ; II.
引用统计
文献类型	期刊论文
版本	出版稿
条目标识符	http://ir.ynao.ac.cn/handle/114a53/27210
专题	大样本恒星演化研究组
作者单位	1.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, China; [email protected]; 2.University of Chinese Academy of Sciences, Beijing 100049, China; 3.Institute of Astronomy and Information, Dali University, Dali 671003, China
第一作者单位	中国科学院云南天文台
推荐引用方式 GB/T 7714	Deng YY,Li, Zhong-Mu. Study of 26 Galactic Open Clusters with Extended Main-sequence Turnoffs[J]. RESEARCH IN ASTRONOMY AND ASTROPHYSICS,2024,24(6).
APA	邓阳阳,&Li, Zhong-Mu.(2024).Study of 26 Galactic Open Clusters with Extended Main-sequence Turnoffs.RESEARCH IN ASTRONOMY AND ASTROPHYSICS,24(6).
MLA	邓阳阳,et al."Study of 26 Galactic Open Clusters with Extended Main-sequence Turnoffs".RESEARCH IN ASTRONOMY AND ASTROPHYSICS 24.6(2024).

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