The Hubble diagram for KLUN galaxies

The unbiased KLUN galaxy subsample binned redshifts (in log V, where V is in km/s) vs. distance moduli (µ = 5 log r + 25, derived with the direct B band TF relation). The continuous line shows the best fit Hubble law, H₀ = 55 km/s/Mpc. The dotted line, with H₀ = 72 km/s/Mpc is shown for comparison.