Density studies of giant extragalactic H II regions

Details Density studies of giant extragalactic H II regions Density studies of giant extragalactic H II regions

Sep 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ap%26ss.171..203c&link_type=abstract

(IAU, European Regional Astronomy Meeting, 11th, La Laguna, Spain, July 3-8, 1989) Astrophysics and Space Science (ISSN 0004-640

Astronomy and Astrophysics

Astrophysics

Electron Density (Concentration), H Ii Regions, Astronomical Spectroscopy, Charge Coupled Devices, H Alpha Line, Milky Way Galaxy, Spatial Resolution

Scientific paper

The variation of the electron density with position in a selected group of bright giant extragalactic H II regions has been studied using long slit spectrophotometry at high spectral and spatial resolution. Density values for the ionized gas of the regions have been obtained from the measurement of the forbidden S II 6717, 6731 A ratio. It is concluded that the regions are not homogeneous; the density varies with position, with the zones of high density frequently associated to high surface brightness.

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