Table 1: Basic parameters of our sample of galaxies. Heliocentric redshifts z were taken from the NED, Seyfert types are according to Véron-Cetty & Véron (2000). The absorption corrected hard X-ray luminosities we compiled from the literature. Where multiple observations were available the average was taken. In these cases the reported uncertainties correspond to 1/2 of the peak-to-peak variabilities. In the case of PG 2130+099 only one measurement could be found. Here we assume a variability of a factor of 2. The last column contains the physical scales resolved by VISIR, computed for an angular resolution of $0 \hbox{$.\!\!^{\prime\prime}$ }35$, which is a typical value for our observations (see Table 2).
Object z Sy log $L_{2{-}10 ~ \textrm{\tiny {keV}}}$ Scale [pc]
Fairall 9 0.047 1.2 $43.84 \pm 0.15^{{\tiny {a,b,c}}}$ 320
NGC 526a 0.019 1.9 $43.14 \pm 0.35^{{\tiny {a,c,k,l}}}$ 135
NGC 3783 0.010 1.5 $43.12 \pm 0.15^{{\tiny {a,c,d}}}$ 70
NGC 4579 0.005 1.9* $41.18 \pm 0.22^{{\tiny {c,e,f,i}}}$ 35
NGC 4593 0.009 1.0 $42.89 \pm 0.15^{{\tiny {a,c,g,h}}}$ 65
PKS 2048-57 0.011 2.0 $43.07 \pm 0.15^{{\tiny {c,o}}}$ 80
PG 2130+099 0.062 1.5 $43.68 \pm 0.15^{{\tiny {c,n}}}$ 415
NGC 7314 0.005 1.9 $42.19 \pm 0.15^{{\tiny {a,c,k,m}}}$ 35
References are a Turner & Pounds (1989), b Gondoin et al. (2001), c Lutz et al. (2004), d Reeves et al. (2004), e Terashima et al. (2002), f Ho et al. (2001), g Reynolds et al. (2004), h Steenbrugge et al. (2003), i Cappi et al. (2005), k Risaliti (2002), l Landi et al. (2001), m Kraemer et al. (2004), n Risaliti et al. (2000), o Smith & Done (1996).
* For a discussion of the classification of NGC 4579 see Sect. 3.

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