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Table 2

Parameters for the 53 X-shaped RG with SDSS images.

ID Redshift FFIRST (mJy) A (″) A / a A − a (″) Outcome
XRS 03 0.591 280 2.91±0.06 1.12± 0.04 0.31±0.09 √
XRS 04 0.51±0.17 / 0.59±0.28 509 faint
XRS 05 0.304 155 3.85±0.03 1.04± 0.01 0.15±0.05 X
XRS 06 0.281 391 2.80±0.02 1.20± 0.01 0.47±0.03 √
XRS 07 0.381a 222 2.62±0.09 1.29± 0.09 0.59±0.16 √
XRS 11 0.68±0.10 / 0.61±0.16 306 2.60±0.06 1.22± 0.05 0.46±0.10 √
XRS 12 0.22±0.02 / 0.21±0.03 180 2.18±0.01 1.03± 0.01 0.06±0.01 X
XRS 13 0.659 318 2.46±0.09 1.10± 0.07 0.25±0.13 X
XRS 19 0.376 291 2.70±0.04 1.06± 0.03 0.14±0.06 X
XRS 20 0.213 121 3.37±0.01 1.02± 0.01 0.06±0.01 X
XRS 22 0.34±0.12 / 0.07±0.03 197 faint
XRS 24 0.520 527 3.25±0.07 1.16± 0.05 0.45±0.12 √
XRS 25 0.591 612 faint
XRS 26 0.227 292 3.53±0.03 1.03± 0.01 0.11±0.05 X
XRS 28 – 206 faint
XRS 29 0.73±0.09 / 0.65±0.20 647 2.64±0.07 1.06± 0.04 0.16±0.10 X
XRS 30 0.166 205 3.34±0.01 1.04± 0.01 0.13±0.01 X
XRS 35 0.42±0.08 / 0.33±0.16 144 2.48±0.07 1.01± 0.05 0.04±0.11 X
XRS 36 – 222 undet.
XRS 44 0.081 537 8.08±0.02 1.20± 0.01 1.35±0.04 √
XRS 45 0.30±0.05 / 0.29±0.09 278 3.13±0.02 1.07± 0.04 0.21±0.03 X
XRS 47 0.72±0.08 / 0.60±0.20 104 faint
XRS 48 0.838 247 1.80±0.03 1.01± 0.02 0.02±0.04 X
XRS 49 0.079 490 6.44±0.01 1.11± 0.01 0.64±0.01 √
XRS 50 0.178a 151 3.89±0.03 1.09± 0.01 0.32±0.05 √
XRS 52 0.75±0.10 / 0.56±0.25 232 faint
XRS 53 0.424 47 2.45±0.05 1.05± 0.03 0.12±0.06 X
XRS 58 0.61±0.13 / 0.61±0.11 135 faint
XRS 59 0.358a 362 2.82±0.04 1.07± 0.03 0.17±0.07 X
XRS 60 – 149 1.71±0.01 1.01± 0.01 0.02±0.01 X
XRS 61 0.419a 637 2.49±0.03 1.09± 0.02 0.20±0.04 √
XRS 63 0.447 75 2.55±0.03 1.15± 0.03 0.34±0.05 √
XRS 64 0.183 179 3.52±0.01 1.03± 0.01 0.09±0.01 X
XRS 67 0.585a 365 1.89±0.03 1.09± 0.03 0.15±0.05 X
XRS 68 0.38±0.08 / 0.35±0.12 71 2.68±0.14 1.08± 0.08 0.20±0.20 X
XRS 71 0.26±0.06 / 0.26±0.08 294 3.18±0.02 1.49± 0.03 1.05±0.04 √
XRS 72 0.641 143 2.63±0.07 1.08± 0.05 0.20±0.11 X
XRS 73 0.550 339 1.85±0.04 1.05± 0.03 0.09±0.05 X
XRS 75 0.43±0.15 / 0.49±0.08 260 faint
XRS 76 0.037 857 5.10±0.01 1.06± 0.01 0.27±0.01 √
XRS 77 0.367 671 2.56±0.04 1.19± 0.04 0.41±0.07 √
XRS 78 0.504 275 2.66±0.06 1.01± 0.03 0.02±0.09 X
XRS 79 0.538a 315 2.77±0.08 1.16± 0.05 0.39±0.12 √
XRS 80 0.38±0.07 / 0.26±0.11 208 2.75±0.04 1.06± 0.02 0.16±0.06 X
XRS 81 0.188 372 2.67±0.01 1.14± 0.01 0.33±0.01 √
XRS 83 0.084 107 4.32±0.01 1.16± 0.01 0.60±0.01 √
XRS 84 0.536 36 2.52±0.07 1.05± 0.05 0.11±0.11 X
XRS 85 0.146a 367 4.86±0.01 1.17± 0.01 0.70±0.02 √
XRS 86 0.659 509 2.86±0.07 1.21± 0.06 0.49±0.12 √
XRS 90 0.174 523 2.80±0.01 1.13± 0.01 0.31±0.01 √
XRS 91 0.30±0.13 / 0.37±0.10 348 2.59±0.01 1.09± 0.01 0.21±0.02 √
XRS 93 0.556 116 2.65±0.07 1.26± 0.06 0.55±0.11 √
XRS 94 0.107 424 3.33±0.01 1.06± 0.01 0.18±0.01 √

Notes. 1) Galaxy ID; 2) spectroscopic redshift (

(a)

mark objects with redshift from Landt et al. 2010) or, when not available, photometric redshifts from the KD and RF methods, respectively; 3) radio flux from the FIRST catalog; 4) optical major axis (all errors quoted are at the 2 σ level); 5) axial ratio; 6) axis difference; 7) outcome of the measurement of the optical axis.

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