Image Details
Caption: Figure 1.
Gaia color–magnitude diagram for globular clusters 47 TUC, M 71, M 4, and M 5 colored by [Fe/H]. Black dashed lines represent the polynomial functions used to separate RGB from red clump and AGB members of each cluster. Note the magnitude errors are smaller than the markers.
© 2025. The Author(s). Published by the American Astronomical Society.