... galaxies

Appendix A is only available in electronic form at http://www.aanda.org

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... samples

For simplicity, we include these sources in Table 1 in the FR I sample.

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... archive

For 3C 066B, 3C 075, 3C 083.1, 3C 338, 3C 449, and 3C 465 the K band luminosity is converted from H-band (Donzelli et al. 2007), assuming H - K = 0.21 and for 3C 442 we convert the V-band luminosity from Smith & Heckman (1989), assuming V - K = 3.30.

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... quantity

With respect to Allen et al. we exchanged the variables on the two axis and used $P_{\rm B} = \dot{M}_{\rm B}$c² directly without any assumption about the efficiency of conversion of rest mass into energy.

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...$\Delta\log r \rangle = -1.7 \pm 0.6$)

The average slope corresponds to the large scale behavior of an isothermal $\beta$ model with $\beta=0.45$.

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... intensity

Only the galaxy UGC 7203, showing extended emission only marginally in excess of the background level, is excluded from this analysis.

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...$P_{\rm j} \propto {\cal S}_{1~{\rm kpc}}^{0.5}$.

We tested that the inclusion of the effects on temperature of the count rates produces a marginal improvement in the correlation, but leaves the slope unchanged.

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...$L_{\rm R} = 10^{27}$ erg/s/Hz

Corresponding to log $\nu L_{\rm R} = 36.7$.

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