1999A&A...350..859S

Spectra of the Hyades K0 giants γ Tau and ε Tau in the regions 5852-5864Å and 6145-6176Å have been recorded at high resolution and with signal/noise in the range 150-250. A critical comparison reveals that, although nearly all lines in the observed regions have a similar depth, lines of ε Tau are broader by about 10% than those of γ Tau. An LTE analysis indicates that slightly higher turbulent broadening in ε Tau can account for the observed differences in line-width. Study of two particularly temperature sensitive features confirms earlier observations that the effective temperature of ε Tau is less than that of γ Tau and determines the temperature difference to be 80±20K.