Long period variables in omega Cen

Recent studies have detected multiple populations in globular clusters. The massive globular cluster {omega} Cen hosts at least three populations of different metallicity. The...近期研究已在球状星团（globular cluster）中探测到多星族现象。其中，大质量球状星团半人马座ω（ω Cen）至少包含三类金属丰度各不相同的星族。该……