Abundances of NGC5897 red giants

We report for the first time on the chemical composition of the halo cluster NGC 5897 (R_{sun}_=12.5kpc), based on chemical abundance ratios for 27 {alpha}-, iron-peak, and...本研究基于27种α元素（alpha-element）、铁峰元素（iron-peak elements）及……的化学丰度比（chemical abundance ratios），首次报道了晕星团（halo cluster）NGC 5897（日心距离R☉=12.5千秒差距）的化学成分。