Abundances of 47 Tuc turn-off stars

The cluster 47 Tuc is among the most metal-rich Galactic globular clusters and its metallicity is similar to that of metal-poor disc stars and open clusters. Like other globular...杜鹃座47（47 Tuc）星团是银河系中金属丰度最高的球状星团之一，其金属丰度与贫金属盘星及疏散星团相近。与其他球状星团类似……