The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei

Details The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei

2010-09-12

arxiv.org/abs/1009.2209v1

The Astrophysical Journal Letters, 721, L143-L147 (2010)

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

This Letter is separated from arXiv:0903.5020 (sumbitted to ApJ), with more tests on the robustness of the detection of narrow

Scientific paper

10.1088/2041-8205/721/2/L143

From detailed spectral analysis of a large sample of low-redshift active galactic nuclei (AGNs) selected from the Sloan Digital Sky Survey, we demonstrate---statistically for the first time---that narrow optical Fe II emission lines, both permitted and forbidden, are prevalent in type 1 AGNs. Remarkably, these optical lines are completely absent in type 2 AGNs, across a wide luminosity range, from Seyfert 2 galaxies to type 2 quasars. We suggest that the narrow FeII-emitting gas is confined to a disk-like geometry in the innermost regions of the narrow-line region on physical scales smaller than the obscuring torus.

Affiliated with

Also associated with

No associations

Rating

The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei 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 The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The Prevalence of Narrow Optical Fe II Emission Lines in Type 1 Active Galactic Nuclei will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-326405