Fig. 12.
MBH computed from the fiducial relation of Vestergaard & Peterson (2006) based on FWHM Hβ vs. the one computed from the C IVλ1549 FWHM corrected following Eq. (6). Error bars include luminosity uncertainties estimated by the scatter in L derived from the UV and the visual spectral ranges along with errors on FWHM propagated quadratically. Lower panel: residuals for the three cases. Meaning of the color-code is the same as in the previous Figs.
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