%0 Journal Article %T A Tentative Size-Luminosity Relation for the Iron Emission-Line Region in Quasars %A Doron Chelouche %A Stephen E. Rafter %A Gabriel I. Cotlier %A Shai Kaspi %A Aaron J. Barth %J Physics %D 2014 %I arXiv %R 10.1088/2041-8205/783/2/L34 %X 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. %U http://arxiv.org/abs/1404.6142v1