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Physical Parameters and Chromospheric Activity of Eclipsing Binaries Observed by the LAMOST DR10 Survey

文献类型：期刊论文

作者Shi, Ansong2; Zhang, Li-yun1,2; Su, Tianhao2; Wang, Yinpeng2; An, Qi2; Han, Xianming L.2,7; Misra, Prabhakar6; Jiang, Linyan5; Guo, Rui4; Pi, Qingfeng3
刊名ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
出版日期2025-09-01
卷号280期号:1
ISSN号0067-0049
DOI10.3847/1538-4365/adf329
文献子类Article
英文摘要In this study, we present a comprehensive study of more than 50,000 spectra of 32,257 eclipsing binaries from the LAMOST DR10 survey, including 5200 systems with spectroscopy. We quantified their chromospheric activity through H alpha spectral subtraction with iSpec, among 20,000 binaries showing significant excess emission. The chromospheric activity increases toward shorter orbital periods and lower metallicity. By combining tidally locked rotation periods with convective turnover times, we have computed their Rossby numbers and uncovered a geometry-driven shift in the saturation threshold: the detached EA systems saturate at logRo similar or equal to-1.3 (Ro approximate to 0.05), whereas equivalent width (EW) contact binaries, owing to their common convective envelope (CCE), do not reach saturation until logRo similar or equal to-1.6 (Ro approximate to 0.025). The CCE enlarges the magnetic-flux reservoir via L1-spanning field lines and strong shear effects, demanding faster rotation to attain the chromospheric limit. For Ro less than or similar to 0.02, we observe a mild downturn consistent with supersaturation. The high-precision Transiting Exoplanet Survey Satellite light curves for 4326 eclipsing binaries reveal starspot amplitudes that correlate tightly with the H alpha activity, confirming enhanced magnetism in close binaries. We have detected 1752 flare events (1179 from 208 EA, 429 from 44 EB, 144 from EW) on eclipsing binaries. We also determined their parameters and the flare frequency distributions in the different types of eclipsing binaries. In the end, we also give the plan of eclipsing binaries in the LAMOST low and medium-resolution spectra future survey.
学科主题天文学 ; 恒星与银河系
URL标识查看原文
出版地TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
WOS关键词ACTIVITY-ROTATION RELATIONSHIP ; MAGNETIC ACTIVITY ; STELLAR-ACTIVITY ; CONTACT BINARIES ; DATA RELEASE ; COOL STARS ; M DWARFS ; TESS ; MASS ; SAMPLE
资助项目MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12373032]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[11963002]; MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[201911]; National Natural Science Foundation of China (NSFC)[CMS-CSST-2021- B07]; National Natural Science Foundation of China (NSFC)[CMS-CSST-2025-A15]; China Manned Space Program; Guizhou Provincial Basic Research Program (Natural Science)
WOS研究方向Astronomy & Astrophysics
语种英语
WOS记录号WOS:001563370300001
出版者IOP Publishing Ltd
资助机构MOST divided by National Natural Science Foundation of China (NSFC)https://doi.org/10.13039/501100001809[12373032, 11963002, 201911] ; National Natural Science Foundation of China (NSFC)[CMS-CSST-2021- B07, CMS-CSST-2025-A15] ; China Manned Space Program[[2022]Young164] ; Guizhou Provincial Basic Research Program (Natural Science)
版本出版稿
源URL[http://ir.ynao.ac.cn/handle/114a53/28566]  
专题云南天文台_中国科学院天体结构与演化重点实验室
通讯作者Zhang, Li-yun
作者单位1.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China;
2.College of Physics, Guizhou University, Guiyang 550025, People’s Republic of China; liy_zhang@hotmail.com;
3.School of Pharmacy, Guizhou University of Traditional Chinese Medicine, Guiyang 550025, People’s Republic of China
4.College of Foreign Languages, Guizhou University, Guiyang 550025, People’s Republic of China;
5.Department of Public Teaching, Guiyang Institute of Information Science and Technology, Guiyang 550025, People’s Republic of China;
6.Department of Physics & Astronomy, Howard University, Washington, DC 20059, USA;
7.Department of Physics and Astronomy and SARA, Butler University, Indianapolis, IN 46208, USA;
推荐引用方式
GB/T 7714		 Shi, Ansong,Zhang, Li-yun,Su, Tianhao,et al. Physical Parameters and Chromospheric Activity of Eclipsing Binaries Observed by the LAMOST DR10 Survey[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2025,280(1).
APA Shi, Ansong.,Zhang, Li-yun.,Su, Tianhao.,Wang, Yinpeng.,An, Qi.,...&Pi, Qingfeng.(2025).Physical Parameters and Chromospheric Activity of Eclipsing Binaries Observed by the LAMOST DR10 Survey.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,280(1).
MLA Shi, Ansong,et al."Physical Parameters and Chromospheric Activity of Eclipsing Binaries Observed by the LAMOST DR10 Survey".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 280.1(2025).

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