Table 2: Source ages. Column 1: the source name; Col. 2: the redshift; Col. 3: the total linear size; Col. 4: the equipartition magnetic field, computed assuming the source parameters from Orienti et al. (2004); Col. 5: the radiative age, computed using Eq. (1) and the lowest break frequency as described in Sect. 4.2; Col. 6: the projected linear size, in pc, between the region considered to derive radiative age and the location of the corresponding hot-spot; Col. 7: the projected distance, in pc, between the core component and the faintest hot-spot; Col. 8: the mean advance speed of the faintest hot-spot; Col. 9: the source age; Col. 10: the projected distance between the core and the brightest hot-spot; Col. 11: the mean advance speed of the brightest hot-spot.
Source z LLS $B_{\rm eq}$ $t_{\rm syn}$ LS Dist $_{\rm fhs}$ $v_{\rm fhs}$ Age Dist $_{\rm bhs}$ $v_{\rm bhs}$
    pc mG 103yr pc pc c 103yr pc c
(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)
B0147+400 0.20 210 3.0 2.6 64 188 0.08 7.5 29 0.01
  0.35 316 3.0 2.6 97 258 0.13 7.5 44 0.02
  0.40 344 3.0 2.6 106 307 0.13 7.5 48 0.02
  0.60 429 3.3 2.2 132 383 0.19 6.5 60 0.03
  0.80 488 3.6 2.0 149 432 0.25 5.6 67 0.04
  1.00 518 4.0 1.7 159 462 0.31 4.8 72 0.05
B0840+424 0.20 362 1.2 14.0 64 301 0.015 70.0 49 0.002
  0.35 544 1.6 9.4 97 452 0.034 44.0 73 0.005
  0.40 592 1.6 9.1 106 492 0.038 42.0 79 0.006
  0.60 740 1.7 8.3 132 614 0.052 38.0 100 0.009
  0.80 834 1.9 7.0 149 692 0.069 32.5 112 0.011
  1.00 892 2.1 6.0 159 740 0.086 28.0 120 0.014


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