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Fig. 9.

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MBH vs. Lbol for quasars. The masses plotted are estimated from different emission lines and monochromatic luminosity found to date (Peng et al. 2006; Assef et al. 2011; Sluse et al. 2012; Ding et al. 2017). For lensed quasars, black open diamonds correspond to the MBH derived from the Mg II and CIV emission lines, black open triangle correspond to the Hα emission line, and black filled triangles to the Hβ emission line. For non-lensed quasars, Shen et al. (2019) data for MBH from SDSS are represented by the gray dots and gray contours. The average MBH mass estimation for WG2038-4008 is represented as blue, red, and green triangles for Mg II, Hβ, and Hα emission lines.

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