Fig. 1.

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Normalized distributions of gravitational redshifts indirectly derived from the FWHM of Hβ broad lines of SDSS DR14 quasars (Rakshit et al. 2020, solid), and of Hβ broad lines of 57 Seyfert type I galaxies cataloged in the AGN Black Hole Mass Database (Bentz & Katz 2015, dashed lines). The median and dispersion of the distribution for the SDSS DR14 quasars are median(zg) = 1.52 × 10−4, and Std(log10(zg)) = 0.49, and for the AGN Black Hole Mass Database, they are median(zg) = 1.18 × 10−4, and Std(log10(zg)) = 0.58.
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