Location of the helium main sequence (solid line) in the log g − T_eff diagram for different stellar masses as indicated. The zero-age EHB (right-hand dotted line) and the terminal-age EHB (left-hand dotted line) are shown for different hydrogen envelope masses based on the Montréal third-generation evolutionary models. Superimposed on this is the location of LS IV-14°116 derived from the FORS2 (left) and UVES (right) spectra. Both estimates place LS IV-14°116 firmly on the EHB; a star that has not yet settled on the EHB would be found at similar temperatures but significantly lower surface gravities (cf. Fig. 1, Miller Bertolami et al. 2011).