Grid of binary colors in M30 (NGC7099)

Two separated sequences of blue straggler stars (BSSs) have been revealed by Ferraro et al. (2009Natur.462.1028F) in the color-magnitude diagram (CMD) of the Milky Way globular...费拉罗等人（Ferraro et al.）在2009Natur.462.1028F的研究中，于银河系球状星团的色星等图（color-magnitude diagram，CMD）内揭示了两组分离的蓝离散星（blue straggler stars，BSSs）序列。