Metal-poor stars in the thick disk of the Galaxy

A new set of very high signal-to-noise (S/N>100/1), medium-resolution (R~3000) optical spectra have been obtained for 302 of the candidate "weak-metal" stars selected by...本研究已为302颗经筛选得到的候选"弱金属星"获取了一批全新的极高信噪比（S/N>100/1）、中等分辨率（R~3000）光学光谱，此类候选星由……筛选所得。