Comparison of the Cha I target components with dwarfs (red continuous) and giants (blue dashed) from the IRTF spectral library in terms of their equivalent widths in the mostly temperature sensitive Na i and Ca i lines and the surface-gravity-sensitive ¹²CO band heads. The dwarf and giant loci are derived from the IRTF spectral library (see Fig. 4 in Daemgen et al. 2012). Strong veiling reduces the measured equivalent widths and explains the clustering of targets close to the origin and to the left of the dwarf sequence.