The H II regions of IC 10

Astronomy and Astrophysics – Astronomy

Scientific paper

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Dwarf Galaxies, H Ii Regions, Irregular Galaxies, Local Group (Astronomy), Charge Coupled Devices, H Alpha Line, Luminosity, Radial Distribution, Star Formation

Scientific paper

Deep CCD narrow-band H-alpha imaging of the Local Group dwarf irregular galaxy IC 10 has revealed a total of 144 H II regions. Positions, H-alpha luminosities, and sizes of these objects are tabulated. The H-alpha luminosity function has the same shape as that for more luminous galaxies. The size distribution has an exponential shape with a size scale of 23 pc. The morphologies of different H II regions are discussed and compared to those in other galaxies. Published radio continuum and CO maps compare well with the H-alpha distribution in the brightest areas, when smoothed to comparable resolution.

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