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 H$\beta$ 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.

5 pages, 3 figures, ApJL published

References in corpus (2)

• A Systematic Analysis of Fe II Emission in Quasars: Evidence for Inflow to the Central Black Hole
• On the size of the Fe II emitting region in the AGN Akn 120

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• On the Performance of Quasar Reverberation Mapping in the Era of Time-Domain Photometric Surveys
• Wavelength-resolved reverberation mapping of intermediate redshift quasars HE 0413-4031 and HE 0435-4312: Dissecting Mg II, optical Fe II, and UV Fe II emission regions