EW of 10 solar-type stars of Praesepe

Open clusters exquisitely track the Galactic disc chemical properties and its time evolution; a substantial number of studies and large spectroscopic surveys focus mostly on the...疏散星团（open clusters）能够精准示踪银盘（Galactic disc）的化学性质及其时间演化过程；当前已有大量研究与大型光谱巡天（spectroscopic surveys）主要聚焦于……