Magnetic Activity in M-type Stars Based on LAMOST DR11 and TESS Observations
文献类型：期刊论文
| 作者 | Ren, Linfeng2; Zhang, Li-yun2,4; Han, Xianming L.1,2; Su, Tianhao2; Li, Wenjie2; Wang, Yinpeng2; Misra, Prabhakar3 |
| 刊名 | ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES
 |
| 出版日期 | 2026-02-01 |
| 卷号 | 282期号:2 |
| ISSN号 | 0067-0049 |
| DOI | 10.3847/1538-4365/ae2461 |
| 文献子类 | Article |
| 英文摘要 | We have used 898,351 M-type stellar spectra released by Large Sky Area Multi-Object Fiber Spectroscopic Telescope DR11 to calculate the equivalent width of the Ca II infrared triplet (IRT) lines, the residual chromospheric emission, and the parameter R8542 ' , which is defined as the ratio of the luminosity of the 8542 & Aring; line to the stellar bolometric luminosity. The chromospheric activity of M dwarfs reaches its maximum around an effective temperature of 3700 K, corresponding to a spectral type of approximately M6. The stellar photospheric activity begins to become significant at around 3800 K, and the trend gradually becomes weaker when approaching 3200 K, which may be due to the influence of the magnetic activity saturation zone. Furthermore, metallicity also influences the intensity of the chromospheric activity. We found that chromospheric and photospheric activity in M dwarfs are correlated, and that both types of activity are influenced by stellar rotation. Additionally, we crossmatched our catalog with the Transiting Exoplanet Survey Satellite and identified 23,079 flare events from 3280 stars. Our results show that the majority of the M dwarf flare radiation energy is below 1036 erg, and the flare duration and energy of nearly all spectral types follow a power-law distribution, i.e., dNdE proportional to E-a with alpha = 2. For the cumulative flare frequency distribution's power-law index, we found the range to be between 1.44 and 2. We found that the power-law index alpha for fully convective M-type stars is approximately 1.61 +/- 0.08, while for non-fully convective M-type stars, it is around 1.78 +/- 0.11. |
| 学科主题 | 天文学 ; 恒星与银河系 |
| URL标识 | 查看原文 |
| 出版地 | No.2 The Distillery, Glassfields, Avon Street, Bristol, ENGLAND |
| WOS关键词 | DIGITAL SKY SURVEY ; WHITE-LIGHT FLARES ; H-ALPHA EMISSION ; SOLAR-TYPE STARS ; CA-II H ; M-DWARFS ; CHROMOSPHERIC ACTIVITY ; INFRARED TRIPLET ; COOL STARS ; X-RAY |
| 资助项目 | MOST divided by National Natural Science Foundation of China (NSFC)[12373032]; Guizhou Provincial Major Scientific and Technological Program[XKBF (2025)010]; China Manned Space Program[CMS-CSST-2021-B07]; Guizhou Provincial Science and Technology Plan Project |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001661479000001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | MOST divided by National Natural Science Foundation of China (NSFC)[12373032] ; Guizhou Provincial Major Scientific and Technological Program[XKBF (2025)010] ; China Manned Space Program[CMS-CSST-2021-B07] ; Guizhou Provincial Science and Technology Plan Project[ZDSYS[2023]003] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28858]  |
| 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.Department of Physics and Astronomy and SARA, Butler University, Indianapolis, IN 46208, USA; 2.College of Physics, Guizhou University, Guiyang 550025, People’s Republic of China; liy_zhang@hotmail.com; 3.Department of Physics and Astronomy, Howard University, Washington, DC 20059, USA 4.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650011, People’s Republic of China; |
| 推荐引用方式 GB/T 7714 | Ren, Linfeng,Zhang, Li-yun,Han, Xianming L.,et al. Magnetic Activity in M-type Stars Based on LAMOST DR11 and TESS Observations[J]. ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,2026,282(2). |
| APA | Ren, Linfeng.,Zhang, Li-yun.,Han, Xianming L..,Su, Tianhao.,Li, Wenjie.,...&Misra, Prabhakar.(2026).Magnetic Activity in M-type Stars Based on LAMOST DR11 and TESS Observations.ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES,282(2). |
| MLA | Ren, Linfeng,et al."Magnetic Activity in M-type Stars Based on LAMOST DR11 and TESS Observations".ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES 282.2(2026). |
入库方式： OAI收割
来源：云南天文台
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