Properties of Flare Events on M Stars from LAMOST Spectral Survey Based on Kepler and TESS Light Curves

作     者：Gang Meng Li-Yun Zhang Tianhao Su Zilu Yang Xianming LHan Prabhakar Misra Liu Long Qingfeng Pi Zhongzhong Zhu Linyan Jiang Gang Meng;Li-Yun Zhang;Tianhao Su;Zilu Yang;Xianming L.Han;Prabhakar Misra;Liu Long;Qingfeng Pi;Zhongzhong Zhu;Linyan Jiang

作者机构：College of Physics&Guizhou Provincial Key Laboratory of Public Big DataGuizhou UniversityGuiyang 550025China Department of AstronomyBeijing Normal UniversityBeijing 100875China Dept.of Physics and AstronomyButler UniversityIndianapolisIN 46208USA Department of Physics&Astronomy Howard UniversityWashingtonDC 20059USA College of MedicineGuizhou University of Traditional Chinese MedicineGuiyang 550025China Guiyang Institute of Information Science and TechnologyGuiyang 550025China 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2023年第23卷第5期

页      面：1-18页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：LAMOST is a National Major Scientific Project built by the Chinese Academy of Sciences provided by the National Development and Reform Commission the financial supports obtained from the NSFC No.11963002 the fostering project of Guizhou University with No.201911 the science research grants from the China Manned Space Project with No.CMS-CSST-2021-B07 the Natural Science Foundation of Guizhou Province with No.2022164 

主　　题：stars activity-stars flare-stars low-mass 

摘      要：A catalog of M stars has been published from the Large Sky Area Multi-Object Fiber Spectroscopic Telescope data release 7(LAMOST DR7).We cross-matched the LAMOST M catalog with Kepler,Kepler 2(K2)and Transiting Exoplanet Survey Satellite(TESS)*** obtained the light curves from the Kepler and TESS *** detected 20,047 flare events from 4053 M stars and calculated their durations,amplitudes,and *** analyzed the distribution of the flare durations and *** distributions of flare duration for Kepler,K2 and TESS peak are at 3–3.5 hr,4–6 hr and 1–1.5 hr,*** may be the result of the different cadences for the three data *** highest regions of the flare energies of Kepler,K2 and TESS are 32–32.5,32–32.5 and31–31.5 erg in Log format,respectively.A linear relationship between flare duration and energy emerges from our *** ratio of flare duration to total observational time is approximately 0.2%–0.3%for the Kepler,K2 and TESS *** occurrence rate of a star with a flare event increases from the M0 to M4 *** also determined the spatial distribution of the flare rate of M stars in the Milky *** seems that the flare rate decreases as the vertical height *** power index of the flare energies is in the region of 1.53–2.32,which is similar to previous result for solar type star(2.0).Further,we examined the relationship between the flare amplitude and chromospheric *** flare activity increases rapidly with the increase in the HαEW at the lower values(less approximately 2?)and it increases slowly at the higher values.