KMS of Xinjiang Astronomical Observatory, CAS
| Origin of extended main-sequence turn-off in open cluster NGC 2355 | |
Maurya, Jayanand1 ; Samal, M. R.2; Amard, Louis3; Zhang, Yu1,4; Niu, Hubiao1; Kim, Sang Chul5,6; Joshi, Y. C.7; Kumar, B.7
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| 2024-07-04 | |
| Source Publication | MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY
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| ISSN | 0035-8711 |
| Volume | 532Issue:1Pages:1212-1222 |
| Contribution Rank | 1 |
| Abstract | The presence of extended Main-Sequence Turn-Off (eMSTO) in the open clusters has been attributed to various factors, such as spread in rotation rates, binary stars, and dust-like extinction from stellar excretion discs. We present a comprehensive analysis of the eMSTO in the open cluster NGC 2355. Using spectra from the Gaia-European Southern Observatory (ESO) archives, we find that the stars in the red part of the eMSTO have a higher mean v sin i value of 135.3 +/- 4.6 km s(-1) compared to the stars in the blue part that have an average v sin i equal to 81.3 +/- 5.6 km s(-1). This suggests that the eMSTO in NGC 2355 is possibly caused by the spread in rotation rates of stars. We do not find any substantial evidence of the dust-like extinction from the eMSTO stars using ultraviolet data from the Swift survey. The estimated synchronization time for low-mass ratio close binaries in the blue part of the eMSTO suggests that they would be mostly slow-rotating if present. However, the stars in the blue part of the eMSTO are preferentially located in the outer region of the cluster indicating that they may lack low-mass ratio close binaries. The spread in rotation rates of eMSTO stars in NGC 2355 is most likely caused by the star-disc interaction mechanism. The stars in the lower main sequence beyond the eMSTO region of NGC 2355 are slow rotating (mean v sin i = 26.5 +/- 1.3 km s(-1)) possibly due to the magnetic braking of their rotations. |
| Keyword | techniques: spectroscopic Hertzsprung-Russell and colour-magnitude diagrams stars: rotation open clusters and associations: individual: NGC 2355 |
| DOI | 10.1093/mnras/stae1611 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | STELLAR ROTATION ; STAR-CLUSTERS ; CHEMICAL ABUNDANCES ; MASS-LUMINOSITY ; AGE ; EVOLUTION ; GAIA ; ENVIRONMENT ; PARAMETERS ; ACCRETION |
| Funding Project | Chinese Academy of Sciences[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 |
| WOS Research Area | Astronomy & Astrophysics |
| WOS Subject | Astronomy & Astrophysics |
| WOS ID | WOS:001262852600003 |
| Publisher | OXFORD UNIV PRESS |
| Funding Organization | Chinese Academy of Sciences ; Chinese Academy of Sciences (CAS) 'Light of West China' Program ; Natural Science Foundation of Xinjiang Uygur Autonomous Region ; National Natural Science Foundation of China |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/6823 |
| Collection | 110米口径全可动射电望远镜（QTT）_110米大口径全可动射电望远镜关键技术研究（973项目）_课题1：大样本射电天体的观测和前沿问题研究_特邀报告 光学天文与技术应用研究室 光学天文与技术应用研究室_星团与星系研究团组 |
| Corresponding Author | Maurya, Jayanand |
| Affiliation | 1.Chinese Acad Sci, Xinjiang Astron Observ, 150,Sci 1 St, Urumqi 830011, Xinjiang, Peoples R China 2.Phys Res Lab, Astron & Astrophys Div, Ahmadabad 380009, India 3.Univ Paris Cite, Univ Paris Saclay, CEA, AIM,CNRS, F-91191 Gif Sur Yvette, France 4.Univ Chinese Acad Sci, Sch Astron & Space Sci, Beijing 100049, Peoples R China 5.Korea Astron & Space Sci Inst, 776 Daedeokdae Ro, Daejeon 34055, South Korea 6.Korea Univ Sci & Technol UST, 217 Gajeong Ro, Daejeon 305350, South Korea 7.Aryabhatta Res Inst Observat Sci ARIES, Naini Tal 263002, India |
| 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 | Maurya, Jayanand,Samal, M. R.,Amard, Louis,et al. Origin of extended main-sequence turn-off in open cluster NGC 2355[J]. MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,2024,532(1):1212-1222. |
| APA | Maurya, Jayanand.,Samal, M. R..,Amard, Louis.,Zhang, Yu.,Niu, Hubiao.,...&Kumar, B..(2024).Origin of extended main-sequence turn-off in open cluster NGC 2355.MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY,532(1),1212-1222. |
| MLA | Maurya, Jayanand,et al."Origin of extended main-sequence turn-off in open cluster NGC 2355".MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY 532.1(2024):1212-1222. |
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| Maurya-2024-Origin o（4175KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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