Lyman line pumping and the modelling of H II regions
Abstract
The author shows that Lyman line pumping (Hoang-Binh, 1983) reduces the maser action in radio recombination lines emitted by H II regions. This effect is equivalent to an increase of the electron density Ne without increasing the electron impact broadening. In the modelling of H II regions by means of radio line data, the variation of the parameter Ne could be significantly influenced by this pump mechanism.
- Publication:
-
Astronomy and Astrophysics
- Pub Date:
- February 1986
- Bibcode:
- 1986A&A...156..393H
- Keywords:
-
- Astronomical Models;
- H Ii Regions;
- Interstellar Masers;
- Lyman Spectra;
- Radio Sources (Astronomy);
- Recombination Reactions;
- Electron Density (Concentration);
- Pumping;
- Astrophysics