The H II regions of GRS

Details The H II regions of GRS The H II regions of GRS

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989pasp..101..640h&link_type=abstract

Astronomical Society of the Pacific, Publications (ISSN 0004-6280), vol. 101, July 1989, p. 640-648.

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35

Dwarf Galaxies, H Alpha Line, H Ii Regions, Irregular Galaxies, Luminosity, Morphology, Radiant Flux Density, Size Distribution

Scientific paper

Deep CCD narrow-band H-alpha imaging of the nearby dwarf irregular galaxy GR8 has revealed a total of 32 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, except for size of sample effects. Most H-II regions detected are at the very low luminosity end of the general luminosity function. The size distribution has an exponential shape, as for other galaxies, with a size scale of 17 pc. The varieties of different structures are discussed and compared to those in larger galaxies. Candidates for the exciting stars can be identified for some of the H-II regions; they are very blue, with MB = -5 to -6.

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