Absolute visual magnitude MV and measured cross-correlation delay of the hot dust. The host-subtracted AGN luminosity, corrected for galactic foreground extinction, is MV (Schlafly & Finkbeiner 2011). Black points are based on the data of Suganuma et al. (2006), as tabulated in Koshida et al. (2014), and labeled s06 and ko14. The continuous line is the best fit determined by s06. The black dashed line corresponds to the light travel time to the expected sublimation radius determined by Kishimoto et al. (2007). Blue pn14 data is WVPS 48 taken from Pozo Nuñez et al. (2014a) and green (pn15) is PGC 50427 measured in Pozo Nuñez et al. (2015). Our new measurement for 3C 120 is shown in red.
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