Investigating Possible Stellar Coronal Mass Ejections in M-type Dwarfs Using the CARMENES Data Release 1 Spectra
文献类型：期刊论文
| 作者 | Cao DT(曹东涛)1,2,3; Gu SH(顾盛宏)2,3,4 |
| 刊名 | ASTROPHYSICAL JOURNAL
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| 出版日期 | 2026-03-01 |
| 卷号 | 999期号:1 |
| ISSN号 | 0004-637X |
| DOI | 10.3847/1538-4357/ae3f1d |
| 产权排序 | 第1完成单位 |
| 文献子类 | Article |
| 英文摘要 | Stellar coronal mass ejections (CMEs) have significant impacts on surrounding exoplanets and stellar evolution. For M-type dwarf stars, hosting close-in habitable zones, frequent and intense stellar CMEs may render their potentially habitable planets uninhabitable. In this study, we used the CARMENES DR 1 spectra to investigate potential stellar CMEs in M-type dwarfs by analyzing asymmetric features of the H alpha profiles. Through a comprehensive visual inspection, we identified 61 distinct asymmetric features in the H alpha line profiles across 33 M-type dwarfs. These asymmetries were associated with increased emissions in several chromospheric activity lines, indicating likely connections to flare events. The velocities of these features remain below the escape velocities of the investigated stars, except for one case where an asymmetric feature's maximum velocity approaches the star's escape velocity. While stellar CMEs are one potential explanation, the observed features are also consistent with other flare-related plasma motions. The estimated moving plasma masses range from 1015 to 1019 g, with corresponding kinetic energies of 1029 to 1032 erg. Stars with asymmetric H alpha profiles are generally associated with stronger surface-average magnetic field (< B >) and higher normalized X-ray luminosity (log LXLbol ). However, we find no significant correlation between the line asymmetry rate and either < B > or log LXLbol . |
| 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 | MAIN-SEQUENCE STARS ; ALPHA LINE-PROFILES ; RED ASYMMETRY ; MAGNETIC-FIELD ; FLARES ; SOLAR ; SIGNATURES ; EMISSION ; TESS ; ROTATION |
| 资助项目 | the Yunnan Revitalization Talent Support Program[Young Talent Project]; the Yunnan Fundamental Research Project[202305AS350009]; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001]; MOST divided by National Natural Science Foundation of China (NSFC)[12288102]; MOST divided by National Natural Science Foundation of China (NSFC)[10373023]; MOST divided by National Natural Science Foundation of China (NSFC)[10773027]; MOST divided by National Natural Science Foundation of China (NSFC)[U1531121]; MOST divided by National Natural Science Foundation of China (NSFC)[11603068]; MOST divided by National Natural Science Foundation of China (NSFC)[12373039]; China Manned Space Program[CMS-CSST-2025-A15] |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:001699599400001 |
| 出版者 | IOP Publishing Ltd |
| 资助机构 | the Yunnan Revitalization Talent Support Program[Young Talent Project] ; the Yunnan Fundamental Research Project[202305AS350009] ; International Centre of Supernovae, Yunnan Key Laboratory[202302AN360001] ; MOST divided by National Natural Science Foundation of China (NSFC)[12288102, 10373023, 10773027, U1531121, 11603068, 12373039] ; China Manned Space Program[CMS-CSST-2025-A15] |
| 版本 | 出版稿 |
| 源URL | [http://ir.ynao.ac.cn/handle/114a53/28994]  |
| 专题 | 云南天文台_系外行星研究组 |
| 通讯作者 | Cao DT(曹东涛) |
| 作者单位 | 1.International Centre of Supernovae, Yunnan Key Laboratory, Kunming 650216, People’s Republic of China; 2.Yunnan Observatories, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; dtcao@ynao.ac.cn, shenghonggu@ynao.ac.cn; 3.Key Laboratory for the Structure and Evolution of Celestial Objects, Chinese Academy of Sciences, Kunming 650216, People’s Republic of China; 4.School of Astronomy and Space Science, University of Chinese Academy of Sciences, Beijing 101408, People’s Republic of China |
| 推荐引用方式 GB/T 7714 | Cao DT,Gu SH. Investigating Possible Stellar Coronal Mass Ejections in M-type Dwarfs Using the CARMENES Data Release 1 Spectra[J]. ASTROPHYSICAL JOURNAL,2026,999(1). |
| APA | 曹东涛,&顾盛宏.(2026).Investigating Possible Stellar Coronal Mass Ejections in M-type Dwarfs Using the CARMENES Data Release 1 Spectra.ASTROPHYSICAL JOURNAL,999(1). |
| MLA | 曹东涛,et al."Investigating Possible Stellar Coronal Mass Ejections in M-type Dwarfs Using the CARMENES Data Release 1 Spectra".ASTROPHYSICAL JOURNAL 999.1(2026). |
入库方式： OAI收割
来源：云南天文台
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