论文标题
基于{\ it tess}数据的附近银河开放簇中的耀斑星星
Flare stars in nearby Galactic open clusters based on {\it TESS} data
论文作者
论文摘要
该研究致力于使用{\ it Tess}任务中的高振动光度法在银河开放簇的确认成员中搜索耀斑恒星。我们分析了来自136个开放群集的957个高环境光曲线。结果，发现了56个耀斑星，其中8个热B-A型物体。在所有耀斑中，在凉爽的恒星样品（$ t _ {\ rm eff} <5000 $ 〜k）中检测到63 \％，在光谱型G的星星中检测到29 \％，而k-type恒星中的23 \％，所有检测到的flares中的大约34 \％在M-type恒星中。使用Flatw'RM（使用RANSAC方法检测）Flare发现算法，我们估计了耀斑的参数和检测到的耀斑恒星的旋转期。最大振幅的耀斑出现在M3型EQ \ Cha星上。统计分析没有揭示年龄，旋转周期和耀斑活性之间的任何直接相关性。
The study is devoted to search for flare stars among confirmed members of Galactic open clusters using high-cadence photometry from {\it TESS} mission. We analyzed 957 high-cadence light curves of members from 136 open clusters. As a result, 56 flare stars were found, among them 8 hot B-A type objects. Of all flares, 63\% were detected in a sample of cool stars ($T_{\rm eff}<5000$~K), and 29\% -- in stars of spectral type G, while 23\% in K-type stars and approximately 34\% of all detected flares are in M-type stars. Using the FLATW'RM (FLAre deTection With Ransac Method) flare finding algorithm, we estimated parameters of flares and rotation period of detected flare stars. The flare with the largest amplitude appears on the M3 type EQ\,Cha star. Statistical analysis did not reveal any direct correlation between ages, rotation periods and flaring activity.
