IC 1613 has revealed a total of 77 H II regions, five of which are complexes of several smaller emission regions. Positions, Hα luminosities, and sizes of these objects are tabulated. The Hα luminosity function has the same shape as that for more luminous galaxies, following a power law with an exponent of -1.6. The faintest H II regions are at the low-luminosity end of the generally observed luminosity function for H II regions in galaxies, with fluxes of only ~10 35 erg /sec. The size distribution has an exponential shape, as for other galaxies, with a size scale of 56 pc. The morphologies of different H II regions are discussed and compared to those in other galaxies. Published radio continuum maps compare well with the Hα emission distribution. The distribution of H I is also similar in the central areas to the H II with, however, a tendency for the H II regions to lie to one side of H I peaks.
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Hodge et al. (1990) studied this question.