Comparison of the SagDIG H II region Hβ emission (black contours) with the stellar HST photometry from Momany et al. (2005). The left panel shows the old RGB and red clump stars (white dots) in the H II region. The middle panel shows the distribution of young MS stars (<7 M_⊙ and 7−10 M_⊙, indicated by cyan dots and cyan crosses, respectively) in the H II region. The orange star is the most luminous (15 M_⊙), and the magenta and green crosses are the second and third (>10 M_⊙) most luminous stars. The right panel shows the CMD of SagDIG, with the same symbols and colours as in the left and the middle panel. The vertical black curve is a 10 Myr isochrone, showing the MS of young stars to provide a proxy for the stellar masses of the young stars. The horizontal black lines show the corresponding range of masses in the main sequence.