Study of Chemical Evolution of Dwarf Galaxies

利用欧洲南方天文台（ESO）的斯巴鲁（SUBARU）望远镜和一台8米望远镜，对几个矮星系的红巨星进行了高分辨率的光谱观测。研究人员获得了这些红巨星的化学成分，并将其与100多亿年前形成的银河系缺乏金属的RGB恒星进行了比较。从这些比较中获得了关于银河系形成过程的一些重要信息。

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.