Fig. 11
First C- and M-type set of selection criteria. Most of the S-type stars and an equal number of C- and M-type stars are found in the region K0 < 16.45 mag, (J − K)0 < 1.2 mag. Excluding this region, our selection is based on a colour cut at (J − K)0 = 1.2 mag. The photometric sample is presented with dots and the spectroscopically confirmed stars with larger points.
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