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تسجيل مستخدم جديدChromospheric variabilities of M active stars based on Guoshoujing Telescope
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For the M active catalogue of Guoshoujing Telescope (LAMOST), 933 sources are presented in at least two exposures. We found that many M active stars show chromospheric variabilities in the Ca H, H$_{alpha}$, H$_{beta}$, and H$_{gamma}$ lines on short or long timescales.
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