EBs in Ruprecht 147. III. EPIC 219552514

Spectroscopic observations are reported for the 2.75 day, double-lined, detached eclipsing binary EPIC 219552514 located at the turnoff of the old nearby open cluster Ruprecht...本文报道了位于邻近古老疏散星团（open cluster）鲁普雷希特（Ruprecht）……主序转向点（turnoff）处的2.75日周期双线分离式食双星（double-lined detached eclipsing binary）EPIC 219552514的光谱观测（Spectroscopic observations）结果。