The dynamics of the narrow line regions of Seyfert galaxies.
Abstract
The physical conditions in the vicinity of Seyfert galaxy nuclei that are inferred from line ratio studies and from their X-ray continua suggest that the velocity widths of Seyfert narrow lines are due to entrainment of the emitting clouds in a hot wind flowing out of the center of the galaxy. A dynamical model is constructed to describe this outflow, using a qualitatively realistic gravitational potential for the galaxy and an approximate equation of state for the gas. Line profiles are then derived from this dynamical model and compared to observed profiles. Agreement is quite satisfactory.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- April 1984
- DOI:
- 10.1086/161916
- Bibcode:
- 1984ApJ...279..521K
- Keywords:
-
- Astronomical Spectroscopy;
- Gas Dynamics;
- Line Spectra;
- Seyfert Galaxies;
- Spectral Line Width;
- Dynamic Models;
- Galactic Nuclei;
- High Temperature Gases;
- Interstellar Gas;
- X Ray Sources;
- Astrophysics