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Table 3

Measured EWCO of stars from Stephenson 2 and derived spectral types.

Stara Spectral type
This work D071 N112

D18 M1I M4I M1.5Iab
D20 M0I M2I M1.5Iab

Notes. 

(a)

The nomenclature is taken from Davies et al. (2007).

(1)

Davies et al. (2007), based on their own EWCO calibration.

(2)

N11, based on Ca triplet/TiO indexes.

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