Measuring Extinction in Nearby Galaxies Based on Hydrogen Recombination Line Strengths

Details Measuring Extinction in Nearby Galaxies Based on Hydrogen Recombination Line Strengths Measuring Extinction in Nearby Galaxies Based on Hydrogen Recombination Line Strengths

Dec 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aas...195.7408j&link_type=abstract

American Astronomical Society, 195th AAS Meeting, #74.08; Bulletin of the American Astronomical Society, Vol. 31, p.1479

Astronomy and Astrophysics

Astronomy

Scientific paper

We derive average extinctions and extinction corrected Hα fluxes in nearby, normal galaxies using narrowband imaging in two recombination lines: Hα and Paschenβ . Since the expected ratio of these lines is insensitive to temperature and densities, we use the observed ratios to derive the total visual extinction in bright HII regions. We see spatially variable extinction, and in some cases heavily extincted nuclear regions.

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