(Left) Values of the pseudo-moment η_V and variable α_V as a function of atmospheric extension for spherical atmospheres, R_⋆/M_⋆ in solar units. (Right) The top panel shows the value of the primary fixed point, μ₁, for the linear-plus-square-root parametrization, also plotted as a function of the extension of the spherical atmosphere. The bottom panel shows the dependence of the normalized V-band intensity of the fixed point on the atmospheric extension. The symbols have the same meaning as in Fig. 2. When comparing to Fig. 2, note that increasing extension corresponds to decreasing log g.