Study of Chemical Evolution of Dwarf Galaxies

利用斯巴鲁望远镜和欧洲南方天文台(ESO)的8米望远镜对几个矮小星系中的红巨星进行了高分辨率光谱观测。这些红巨星的化学成分被获得，并与100多亿年前形成的银河系缺乏金属的RGB星进行了比较。从这些比较中获得了有关我们银河系形成过程的几个重要信息。

High resolution spectroscopic observations of red giants stars belonging to several dwarf galaxies were carried out using the SUBARU telescope and a 8m telescope at European Southern Observatory (ESO). Chemical compositions of these red giant stars were obtained and compared with Galactic metal deficient RGB stars, which were formed more than 10 billion years ago. Several important information concerning the formation process of our Galaxy were obtained from these comparisons.