Institutional Repository of Optical Astronomy Research Laboratory
| Simultaneous Detection of Optical Flares of the Magnetically Active M-dwarf Wolf359 | |
Lin, Han-Tang1; Chen, Wen-Ping1,2; Liu, Jinzhong3 ; Zhang, Xuan3; Zhang, Yu3; Wang, Andrew4; Wang, Shiang-Yu4; Lehner, Matthew J.4,5,6; Wen, C. Y.4; Guo, J. K.1; Chang, Y. H.1; Chang, M. H.1; Tsai, Anli1; Lin, Chia-Lung1; Hsu, C. Y.1; Ip, Wing1,7
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| 2022-04-01 | |
| Source Publication | Astronomical Journal
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| ISSN | 0004-6256 |
| Volume | 163Issue:4Pages:164 |
| Contribution Rank | 3 |
| Abstract | We present detections of stellar flares of Wolf 359, an M6.5 dwarf in the solar neighborhood (2.41 pc) known to be prone to flares due to surface magnetic activity. The observations were carried out from 2020 April 23 to 29 with a 1 m and a 0.5 m telescope separated by nearly 300 km in Xinjiang, China. In 27 hr of photometric monitoring, a total of 13 optical flares were detected, each with a total energy of greater than or similar to 5 x 10(29) erg. The measured event rate of about once every two hours is consistent with those reported previously in radio, X-ray, and optical wavelengths for this star. One such flare, detected by both telescopes on April 26, was an energetic event with a released energy of nearly 10(33) erg. The two-telescope light curves of this major event sampled at different cadences and exposure timings enabled us to better estimate the intrinsic flare profile, which reached a peak of up to 1.6 times the stellar quiescent brightness, that otherwise would have been underestimated in the observed flare amplitudes of about 0.4 and 0.8, respectively, with single telescopes alone. The compromise between fast sampling so as to resolve a flare profile versus a longer integration time for a higher photometric signal-to-noise ratio provides a useful guidance in the experimental design of future flare observations. |
| Keyword | stars driven taos Astronomy & Astrophysics |
| Subtype | Article |
| DOI | 10.3847/1538-3881/ac4e92 |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS ID | WOS:000767565800001 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.xao.ac.cn/handle/45760611-7/5137 |
| Collection | 光学天文与技术应用研究室 科研仪器设备产出_利用南山1米大视场望远镜（NOWT）观测数据的文章 |
| Affiliation | 1.Graduate Institute of Astronomy, National Central University, 300 Zhongda Road, Zhongli, Taoyuan 32001, Taiwan; wchen@astro.ncu.edu.tw; 2.Department of Physics, National Central University, 300 Zhongda Road, Zhongli, Taoyuan 32001, Taiwan; 3.Xinjiang Astronomical Observatory, Chinese Academy of Sciences, Peopleʼs Republic of China; 4.Institute of Astronomy and Astrophysics, Academia Sinica, No. 1, Sec. 4, Roosevelt Road, Taipei 10617, Taiwan; 5.Department of Physics and Astronomy, University of Pennsylvania, 209 South 33rd Street, Philadelphia, PA 19125, USA; 6.Center for Astrophysics, Harvard & Smithsonian, 60 Garden Street, Cambridge, MA 02138, USA; 7.Graduate Institute of Space Science, National Central University, 300 Zhongda Road, Zhongli, Taoyuan 32001, Taiwan |
| Recommended Citation GB/T 7714 | Lin, Han-Tang,Chen, Wen-Ping,Liu, Jinzhong,et al. Simultaneous Detection of Optical Flares of the Magnetically Active M-dwarf Wolf359[J]. Astronomical Journal,2022,163(4):164. |
| APA | Lin, Han-Tang.,Chen, Wen-Ping.,Liu, Jinzhong.,Zhang, Xuan.,Zhang, Yu.,...&Ip, Wing.(2022).Simultaneous Detection of Optical Flares of the Magnetically Active M-dwarf Wolf359.Astronomical Journal,163(4),164. |
| MLA | Lin, Han-Tang,et al."Simultaneous Detection of Optical Flares of the Magnetically Active M-dwarf Wolf359".Astronomical Journal 163.4(2022):164. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Lin-2022-Simultaneou（3326KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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