Spectroscopy and photometry of IM Per

IM Per is a detached A7 eccentric eclipsing binary star. We have obtained extensive measurements of the light curve (28225 differential magnitude observations) and radial...IM Per（英仙座IM）是一颗分离式偏心轨道A型7（A7）食双星（eclipsing binary star）。本研究已获取该天体光变曲线（light curve）的大量观测数据，共计28225条差分星等（differential magnitude）观测值，以及径向（radial）……