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Table 2.

Mean, median, and standard deviation of bolometric luminosities, black hole masses, and Eddington ratios distribution shown in Fig. 4, for the low- and high-z quasars samples.

High-z quasars Low-z quasars KS-test
Mean Median St. Dev Mean Median St. Dev p-value
All luminosity
Lbol [1047 erg s−1] 1.49 1.32 0.38 1.49 1.32 0.38 1
MBH [109 M⊙] 1.79 1.40 0.45 2.44 1.80 0.35 2×10−4
λBH 0.89 0.76 0.30 0.62 0.50 0.34 2×10−8
High luminosity: Lbol > 1047.17 erg s−1
Lbol [1047 erg s−1] 2.47 2.18 0.14 2.47 2.17 0.14 1.0
MBH [109 M⊙] 2.74 2.18 0.25 3.19 2.53 0.28 0.47
λBH 0.88 0.73 0.24 0.85 0.69 0.28 0.32
Medium luminosity: 1046.92 < Lbol < 1047.17 erg s−1
Lbol [1047 erg s−1] 1.20 1.26 0.07 1.20 1.26 0.07 1.0
MBH [109 M⊙] 1.61 1.28 0.27 2.38 1.81 0.30 1×10−4
λBH 0.84 0.76 0.28 0.61 0.51 0.29 6×10−5
Low luminosity: Lbol < 1046.92 erg s−1
Lbol [1047 erg s−1] 0.49 0.58 0.30 0.49 0.58 0.30 1.0
MBH [109 M⊙] 0.52 0.52 0.45 1.46 1.03 0.35 10−8
λBH 0.79 0.77 0.38 0.41 0.32 0.34 3×10−9

Notes. We also report the p-values obtained with a Kolmogorov–Smirnov test.

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