Short-duration high-amplitude flares detected on the M dwarf star KIC 5474065
Short-duration high-amplitude flares detected on the M dwarf star KIC 5474065
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在 M 矮星 KIC 5474065 上检测到短时高振幅耀斑
DOI：
10.1093/mnras/stt1182
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发表时间：
2013
影响因子：
4.8
通讯作者：
Bay Area Eri
中科院分区：
文献类型：
--
作者：
G. Ramsay;J. G. Doyle;P. Hakala;D. García;Adam Brooks Thomas Barclay Martin Still Armagh Observatory;Finca;Iac;U. L. Laguna;Grantecan;Ucl;N. Ames;Bay Area Eri
利用在RATS-Kepler项目中获得的数据，我们在对KIC 5474065矮星进行的1小时地面光度测量中发现了一个持续时间较短的耀斑。使用GTC进行的观测显示它是一颗M4 V光谱型的恒星。使用1分钟采样的开普勒观测表明，KIC 5474065表现出振幅大（- F/F> .4）的光学耀斑，持续时间短至10分钟。我们比较了KIC 5474065与KIC 9726699的耀斑能量分布，KIC 9726699也是用1分钟采样观测到的，并与文献中其他M矮星的地面观测结果进行了比较。我们讨论了这些持续时间短、能量相对较低的耀斑对在这些耀斑恒星的可居住区内运行的系外行星的大气可能产生的影响。
Using data obtained during the RATS-Kepler project we identified one short duration flare in a 1 hour sequence of ground based photometry of the dwarf star KIC 5474065. Observations made using GTC show it is a star with a M4 V spectral type. Kepler observations made using 1 min sampling show that KIC 5474065 exhibits large amplitude (�F/F>0.4) optical flares which have a duration as short as 10 mins. We compare the energy distribution of flares from KIC 5474065 with that of KIC 9726699, which has also been observed using 1 min sampling, and ground based observations of other M dwarf stars in the literature. We discuss the possible implications of these short duration, relatively low energy flares would have on the atmosphere of exoplanets orbiting in the habitable zone of these flare stars.