Fig. 9
Spectral type versus total equivalent width of the calcium triplet (8498Å, 8542Å, and 8662Å). The shapes are the same as in Fig. 4. The error bars indicate the median uncertainty for the sum of EWs, and the estimated uncertainty for SpT from GDN2015. The black line marks EW = 9Å, as this value separates optimally the SGs from the non-SGs.
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