Fig. 18
The mass dependence of FP mass-to-light ratios. Top: the residuals Δlog M/LB + 1.66log (1 + z) as a function of galaxy mass for cluster galaxies at low (left, z < 0.5), intermediate (middle, 0.5 ≤ z < 0.7), and high (right, z > 0.7) redshift. The arrow in the top left panel shows the how points change due to the typical 10% error in velocity dispersion. Bottom: the residuals Δlog M/LB + 1.66log (1 + z) as a function of galaxy dynamical mass for field galaxies at low (left, z < 0.5), intermediate (middle, 0.5 ≤ z < 0.7), and high (right, z ≥ 0.7) redshift. Colors and symbols as in Fig. 17. The green points show averages over log Mdyn bins 0.25 dex wide.
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