A Tentative Size-Luminosity Relation for the Iron Emission-line Region in Quasars
Abstract
New reverberation mapping measurements of the size of the optical iron emission-line region in quasars are provided, and a tentative size-luminosity relation for this component is reported. Combined with lag measurements in low-luminosity sources, the results imply an emission-region size that is comparable to and at most twice that of the Hβ line, and is characterized by a similar luminosity dependence. This suggests that the physics underlying the formation of the optical iron blends in quasars may be similar to that of other broad emission lines.
- Publication:
-
The Astrophysical Journal
- Pub Date:
- March 2014
- DOI:
- 10.1088/2041-8205/783/2/L34
- arXiv:
- arXiv:1404.6142
- Bibcode:
- 2014ApJ...783L..34C
- Keywords:
-
- galaxies: active;
- methods: data analysis;
- quasars: emission lines;
- Astrophysics - Astrophysics of Galaxies
- E-Print:
- 5 pages, 3 figures, ApJL published