Abundances of 3 bright extremely metal-poor giants

We present detailed chemical abundances of three new bright (V~11), extremely metal-poor ([Fe/H]~-3.0), r-process-enhanced halo red giants based on high-resolution, high-S/N...本研究呈现了三颗新发现的亮银晕红巨星的详细化学丰度，这类恒星视星等V≈11、金属丰度极低（[Fe/H]≈-3.0）且快中子俘获过程（r-process）增强，相关观测基于高分辨率、高信噪比（S/N）……