Mathematics – Probability
Scientific paper
Jul 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...306..130k&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 306, July 1, 1986, p. 130-141. Research supported by the University of Minn
Mathematics
Probability
200
H Ii Regions, Magellanic Clouds, Nebulae, Star Formation, Stellar Evolution, Astronomical Spectroscopy, Emission Spectra, H Alpha Line, Luminosity, Spectrum Analysis, Tables (Data)
Scientific paper
Photoelectrically calibrated maps of the H-alpha emission in the Magellanic Clouds have been used to measure integrated fluxes for several hundred H II regions and to study the properties of the H II region populations in the galaxies. The H II regions span a range of 10,000 in luminosity, from objects on the scale of the Orion Nebula to the 30 Doradus complex. The H-alpha luminosity function is well represented over this entire range by a power law function, indicating that there is no characteristic luminosity scale for the H II regions. The distributions of nebular diameters, on the other hand, are fitted well by exponential functions, with a scale length of 80 pc. Approximate fluxes for several of the extended filamentary networks in the galaxies have also been measured. This extended component probability contributes 15-25 percent of the total H-alpha luminosity of the galaxies.
Hodge Paul W.
Kennicutt Robert C. Jr.
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