Flux of HI (Q₀, red circles), HeI (Q₁, orange squares) and HeII (Q₂, yellow diamonds) ionizing photons from our models of stripped stars with various metallicity. The flux estimates using the effective temperature of the evolutionary models for blackbody radiation are shown with open symbols and dashed lines. The more accurate estimates from the modeled spectra are shown with filled symbols and solid lines. The wind mass loss rate affects the appearance of the spectral energy distribution (see Fig. 10) and thus the emission rate of ionizing photons as well. We show the flux estimates between the mass loss rate that is three times higher (“enhanced”) and three times lower (“reduced”) with shaded regions. Both Q₀ and Q₁ are plotted on linear scale as the variation is small with metallicity. The value Q₂ is strongly wind mass loss dependent and therefore varies significantly with metallicity.