The H II regions of Holmberg II

Details The H II regions of Holmberg II The H II regions of Holmberg II

Mar 1994

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994pasp..106..309h&link_type=abstract

Publications of the Astronomical Society of the Pacific, vol. 106, no. 697, p. 309-314

Mathematics

Logic

19

Dwarf Galaxies, Emission Spectra, H Alpha Line, H Ii Regions, Irregular Galaxies, Luminosity, Morphology, Size Distribution, Star Formation

Scientific paper

Calibrated H(alpha) and continuum charge coupled devices (CCD) frames are used to measure the emission-line luminosities, sizes, and morphological characteristics of 82 H II regions in the dwarf irregular galaxy, Ho II, in the M81 group. The assemblage of H II regions is statistically normal: the luminosity function fits a power law with a slope of -1.70 and the size distribution is roughly exponential with a scale length of 85 pc. An unusually large number of H II regions show ring structures, a fact that may be correlated with this galaxy's unusual H I structure (Puche, D., Westphall, D., Brinks, E., and Roy, J.-R. 1992, AJ, 103, 1841).

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