Fig. 2: HST-based colour-magnitude diagram (CMD) of ω Cen.
From: Fast-moving stars around an intermediate-mass black hole in ω Centauri

The CMD locations of all fast-moving stars are marked with pink symbols, with their photometric 1σ errors marked with error bars. All of them lie on the main sequence, showing that they are probably members of ω Cen. The stars are labelled from A to G, sorted by their distance from the AvdM10 centre.