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The Impact of Stellar Rotations and Binaries on the Shape of Upper Main Sequence near Turnoff in Open Cluster NGC 6067

文献类型：期刊论文

作者Maurya, Jayanand1; Zhang, Yu1,6; Kamann, Sebastian5; Niu, Hubiao1; Fremat, Yves4; Lang, Kaixiang1; Joshi, Y. C.3; Samal, M. R.2; De Cat, Peter4; Esamdin, Ali1,6
刊名ASTROPHYSICAL JOURNAL
出版日期2025-08-10
卷号989期号:1页码:123
ISSN号0004-637X
DOI10.3847/1538-4357/adef40
产权排序1
英文摘要We present the analysis of the extended main-sequence turnoff (eMSTO) in the open cluster NGC 6067. We derive the projected rotational velocity, vsini, of the stars belonging to the eMSTO region of the main sequence (MS) utilizing Gaia-ESO spectra. Our results reveal a positive correlation between vsini and the color of eMSTO stars, where fast-rotating stars predominantly occupy the red part of the MS while slow-rotating ones prefer a bluer side of the MS. The gravity-darkening effect might be a reason for this correlation. We find that most of the close binaries present in the eMSTO population would be slow-rotating due to the tidal-locking phenomenon. We identify four double-lined spectroscopic binaries (SB2) featuring slow-rotating companions, further supporting this tidal-locking hypothesis. However, the spatial distribution and the cumulative radial distribution indicate a higher concentration of red eMSTO stars in the cluster's central region than their bluer counterparts. This suggests that tidal locking is less likely to be the cause of the observed spread in rotation rates among eMSTO stars. Instead, we propose that star-disk interactions during the pre-main-sequence phase might have played a crucial role in spreading the rotation rates of stars, leading to the eMSTO phenomenon in NGC 6067.
WOS关键词LOW-MASS STARS ; CHEMICAL ABUNDANCES ; SPIN EVOLUTION ; AGE ; GAIA ; I. ; POPULATIONS ; ACCRETION ; ORIGIN ; ENVIRONMENT
资助项目(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Xinjiang Uygur Autonomous Region (Xinjiang Natural Science Foundation)https://doi.org/10.13039/100009110[2022-XBQNXZ-013] ; Chinese Academy of Sciences (CAS) Light of West China Program[2022D01E86] ; Natural Science Foundation of Xinjiang Uygur Autonomous Region[U2031204] ; National Natural Science Foundation of China[2023TSYCLJ0053] ; Tianshan Talent Training Program
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001547087500001
出版者IOP Publishing Ltd
资助机构(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic)(sic) divided by Natural Science Foundation of Xinjiang Uygur Autonomous Region (Xinjiang Natural Science Foundation)https://doi.org/10.13039/100009110 ; Chinese Academy of Sciences (CAS) Light of West China Program ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China ; Tianshan Talent Training Program
源URL[http://ir.xao.ac.cn/handle/45760611-7/8026]  
专题光学天文与技术应用研究室_变星研究团组
通讯作者Maurya, Jayanand; Zhang, Yu
作者单位1.Chinese Acad Sci, Xinjiang Astron Observ, 150 Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China
2.Astron & Astrophys Div, Phys Res Lab, Ahmadabad 380009, India
3.Aryabhatta Res Inst Observat Sci ARIES, Manora Peak, Naini Tal 263002, India
4.Royal Observ Belgium, Ave Circulaire 3, B-1180 Brussels, Belgium
5.Liverpool John Moores Univ, Astrophys Res Inst, IC 2 Liverpool Sci Pk,146 Brownlow Hill, Liverpool L3 5RF, England
6.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China
推荐引用方式
GB/T 7714		 Maurya, Jayanand,Zhang, Yu,Kamann, Sebastian,et al. The Impact of Stellar Rotations and Binaries on the Shape of Upper Main Sequence near Turnoff in Open Cluster NGC 6067[J]. ASTROPHYSICAL JOURNAL,2025,989(1):123.
APA Maurya, Jayanand.,Zhang, Yu.,Kamann, Sebastian.,Niu, Hubiao.,Fremat, Yves.,...&Esamdin, Ali.(2025).The Impact of Stellar Rotations and Binaries on the Shape of Upper Main Sequence near Turnoff in Open Cluster NGC 6067.ASTROPHYSICAL JOURNAL,989(1),123.
MLA Maurya, Jayanand,et al."The Impact of Stellar Rotations and Binaries on the Shape of Upper Main Sequence near Turnoff in Open Cluster NGC 6067".ASTROPHYSICAL JOURNAL 989.1(2025):123.

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来源：新疆天文台

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