Extended main sequence turnoff in open cluster

We present an analysis of the relatively low mass (~2400M_{sun}_), ~800Myr, Galactic open cluster, NGC 2818, using Gaia DR2 results combined with VLT/FLAMES spectroscopy. Using...我们针对质量相对较低（约2400倍太阳质量（Solar mass））、年龄约800百万年（Myr）的银河疏散星团NGC 2818展开分析，采用盖亚第二版数据发布（Gaia Data Release 2，Gaia DR2）的结果结合甚大望远镜（Very Large Telescope，VLT）/FLAMES的光谱观测数据开展研究。