Table 2: Environmental properties for AGNs and control samples of normal galaxies with the same distribution in the galaxy diameter. The number (N), the fraction (f) of galaxies, and the median surface density ($\Sigma $) with the associated errors ($\sigma $) are given for different bins in the number of neighbour galaxies.
Neighbours Sy1 Early Sy1 Late Sy1
  N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $ N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $ N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $
all 725 100.0 - 1.8 0.1 553 100.0 - 1.9 0.1 71 100.0 - 1.6 0.2
$N_{\rm neigh} = 0$ 170 23.0 2.0 - - 128 23.1 2.3 - - 14 20.0 6.0 - -
$N_{\rm neigh} = 1$ 156 22.0 2.0 0.9 0.2 115 20.8 2.1 1.1 0.2 21 30.0 7.0 0.6 0.3
$2 \le N_{\rm neigh}\le10$ 350 48.0 3.0 1.9 0.1 273 49.4 3.7 1.9 0.1 35 49.0 10.0 1.7 0.2
$11 \le N_{\rm neigh} \le20$ 33 4.6 0.8 4.7 0.1 26 4.7 0.9 4.6 0.1 1 1.0 1.0 - -
$21 \le N_{\rm neigh} \le30$ 4 0.6 0.3 7.7 0.4 3 0.5 0.3 8.3 0.9 0 0.0 - - -
$N_{\rm neigh} > 30$ 2 0.3 0.2 13.0 2.0 1 0.2 0.2 - - 0 0.0 - - -
$r_{\rm max} \le 100$ kpc 10 1.4 0.4 63.0 24.0 7 1.3 0.5 60.0 21.0 0 0.0 - - -
Neighbours Sy2 Early Sy2 Late Sy2
  N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $ N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $ N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $
all 1104 100.0 - 1.6 0.1 297 100.0 - 1.9 0.1 628 100.0   1.5 0.1
$N_{\rm neigh} = 0$ 306 28.0 2.0 - - 88 30.0 4.0 - - 171 27.0 2.0 - -
$N_{\rm neigh} = 1$ 237 22.0 2.0 0.8 0.1 50 17.0 3.0 0.8 0.2 149 24.0 2.0 0.8 0.2
$2 \le N_{\rm neigh}\le10$ 505 46.0 3.0 1.8 0.1 142 48.0 5.0 2.0 0.1 279 44.0 3.0 1.6 0.1
$11 \le N_{\rm neigh} \le20$ 28 2.5 0.5 5.2 0.2 8 3.0 1.0 5.2 0.3 14 2.2 0.6 5.3 0.3
$21 \le N_{\rm neigh} \le30$ 5 0.5 0.2 8.2 0.3 3 1.0 0.6 8.2 0.0 2 0.3 0.2 9.7 0.2
$N_{\rm neigh} > 30$ 0 0.0 - - - 0 0.0 - - - 0 0.0 - - -
$r_{\rm max} \le 100$ kpc 23 2.1 0.4 84.0 64.0 6 2.0 0.8 117.0 16.0 13 2.1 0.6 71.0 20.0
Neighbours PGs (early) UELGs (late) SFGs (late)
  N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $ N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $ N f (%) $\sigma $ $\left\langle \Sigma\right\rangle$ $\sigma $
all 8144 100.0   2.5 0.0 6955 100.0   1.6 0.0 4837 100.0   1.5 0.0
$N_{\rm neigh} = 0$ 1573 19.3 0.5 - - 2192 31.5 0.8 - - 1749 36.0 1.0 - -
$N_{\rm neigh} = 1$ 1240 15.2 0.5 0.9 0.1 1449 20.8 0.6 0.8 0.0 1083 22.4 0.8 0.8 0.1
$2 \le N_{\rm neigh}\le10$ 3996 49.1 0.9 2.2 0.0 2940 42.3 0.9 1.7 0.0 1777 37.0 1.0 1.6 0.0
$11 \le N_{\rm neigh} \le20$ 913 11.2 0.4 5.1 0.0 276 4.0 0.2 4.7 0.1 104 2.2 0.2 5.0 0.1
$21 \le N_{\rm neigh} \le30$ 263 3.2 0.2 8.3 0.1 38 0.5 0.1 7.8 0.1 18 0.4 0.1 8.1 0.2
$N_{\rm neigh} > 30$ 71 0.9 0.1 11.8 0.2 3 0.0 0.0 11.3 0.3 2 0.0 0.0 11.2 0.0
$r_{\rm max} \le$ 100 kpc 88 1.1 0.1 67.0 40.0 57 0.8 0.1 52.0 133.0 104 2.2 0.2 72.0 32.0


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