Fig. 3.
V/(B − V) diagram for all stars in the field of NGC 6649. Stars with only BV photometry are represented by gray dots whereas those observed also in the U band appear as green dots. Stars for which we additionally have spectra are plotted with small blue circles (B-type stars), magenta diamond (Be star), and big circles: greenish-yellow for YSGs and red for RSGs. The numbering for the most representative stars is marked as well.
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