1307.4645 (Q. F. Pi et al.)

Chromospheric variabilities of M active stars based on Guoshoujing Telescope    [PDF]

Q. F. Pi, L. Y. Zhang, J. R. Shi, H. Wu, Y. H. Zhao, A. L. Luo, J. K. Zhao, A. Y. Zhou, X. S. Fang, Lamost Collaboration

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.

View original: http://arxiv.org/abs/1307.4645