PseudoColor maps of RGB stars in 22 GCs

Multiple populations (MPs) in globular clusters (GCs) are stars distinct by their abundances of light elements. The MPs can be directly separated by measuring abundances of C,...球状星团（globular clusters, GCs）中的多星族（Multiple Populations, MPs）是一类轻元素丰度存在显著差异、可与其他恒星相区分的恒星群体。此类多星族可通过测定碳（C）等元素的丰度直接实现区分。