Astronomy and Astrophysics – Astrophysics
Scientific paper
Feb 1986
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1986apj...301..727d&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 301, Feb. 15, 1986, p. 727-741.
Astronomy and Astrophysics
Astrophysics
132
Emission Spectra, Line Spectra, Seyfert Galaxies, Spectral Line Width, Forbidden Transitions, H Beta Line, Iron, Magnesium, Oxygen
Scientific paper
An analysis of the line profiles in 18 high-ionization Seyfert 2 galaxies is presented. Two-thirds of the sample show a correlation between emission-line width and critical density. Few objects show a correlation between line width and ionization potential. The data argue strongly for a model in which optically thick emission-line clouds occupy regions of highest density and velocity dispersion. A correlation was found between the Hβ emission-line equivalent width and the line widths for all emission lines. According to the relation, all narrow-line widths tend to 320±25 km s-1 as the Hβ emission-line equivalent width approaches zero. A comparison between Seyfert 2 line profiles and the corresponding Seyfert 1 narrow-line profiles is included. The significant profile differences between Seyfert 1s and 2s argue in a statistical sense against evolution between types on short time scales, and that Seyfert 2s are not highly reddened Seyfert 1s.
de Robertis Michael M.
Osterbrock Donald E.
No associations
LandOfFree
An analysis of the narrow line profiles in Seyfert 2 galaxies does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with An analysis of the narrow line profiles in Seyfert 2 galaxies, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and An analysis of the narrow line profiles in Seyfert 2 galaxies will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1675120