Fundamental parameters of five old open clusters

The outer parts of the Milky Way disk are believed to be one of the main arenas where the accretion of external material in the form of dwarf galaxies and subsequent formation...

学界普遍认为，银河系盘的外围区域是外部物质以矮星系形式吸积，并进而形成……的主要天体物理演化场所之一。