Fig. 7.

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Estimates of hydrogen- and fully helium-ionizing photon emission rates of individual stripped stars at Z = 0.002 from Götberg et al. (2018, Q0 and Q2, respectively). To estimate the ionizing emission from massive and hot stripped stars in a Z = 0.002 population, we fit a line to the stars with Mstrip > 2 M⊙. We then extrapolated this function up to stripped star masses of 17 M⊙ to represent the emission from stripped stars that do not appear as WR type. For reference, we mark the Q0 and Q2 for an early O-type star and a hot WR star, respectively, according to models from Smith et al. (2002).
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