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Home All issues Volume 494 / No 3 (February II 2009) A&A, 494 3 (2009) 857-865 Full HTML
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Table 4:

A detailed view of the redshift asymmetries in mock catalogues.
Sample $n_{\rm G}$ $n_{+ \Delta z}$ $n_{- \Delta z}$ $n_{\pm \Delta z}$ $+ \Delta z$ (%) $- \Delta z$ (%) $\pm \Delta z$ (%)
Mock1, gravitationally bound groups              
all groups ($n \leq 10$) 675 282 259 134 50.5 $\pm$ 10.1 49.5 $\pm$ 10.1 19.9 $\pm$ 2.5
spiral ( $T \geq 0.92$) dominant groups 537 231 199 107 52.4 $\pm$ 10.6 47.6 $\pm$ 10.6 19.9 $\pm$ 2.7
E/S0 (T < 0.92) dominant groups 138 51 60 27 46.0 $\pm$ 16.0 54.1 $\pm$ 16.0 19.6 $\pm$ 4.4
Mock1, gravitationally unbound groups              
all groups ($n \leq 10$) 709 340 246 123 58.3 $\pm$ 2.9 41.7 $\pm$ 2.9 17.3 $\pm$ 2.2
spiral ( $T \geq 0.92$) dominant groups 616 297 209 110 59.0 $\pm$ 3.2 41.0 $\pm$ 3.2 17.9 $\pm$ 2.8
E/S0 (T < 0.92) dominant groups 93 43 37 13 54.1 $\pm$ 7.1 45.9 $\pm$ 7.1 14.0 $\pm$ 8.5
Mock1, bound, wrongly identified              
all groups ($n \leq 10$) 289 142 110 37 56.3 $\pm$ 12.9 43.7 $\pm$ 12.9 12.8 $\pm$ 4.2
spiral ( $T \geq 0.92$) dominant groups 257 129 95 33 57.6 $\pm$ 12.8 42.4 $\pm$ 12.8 12.8 $\pm$ 3.7
E/S0 (T < 0.92) dominant groups 32 13 15 4 46.4 $\pm$ 18.2 53.6 $\pm$ 18.2 12.5 $\pm$ 12.0
Mock1, unbound, wrongly identified              
all groups ($n \leq 10$) 338 193 96 49 66.8 $\pm$ 3.8 33.2 $\pm$ 3.8 14.5 $\pm$ 4.6
spiral ( $T \geq 0.92$) dominant groups 297 171 83 43 67.6 $\pm$ 3.5 32.4 $\pm$ 3.5 14.5 $\pm$ 4.8
E/S0 (T < 0.92) dominant groups 41 22 13 6 62.9 $\pm$ 9.7 37.1 $\pm$ 9.7 14.6 $\pm$ 9.9
Mock2, gravitationally bound groups              
all groups ($n \leq 10$) 5715 2327 2214 1174 51.3 $\pm$ 1.7 48.7 $\pm$ 1.7 20.5 $\pm$ 0.7
spiral ( $T \geq 0.92$) dominant groups 3649 1515 1386 748 52.3 $\pm$ 2.9 47.7 $\pm$ 2.9 20.5 $\pm$ 1.2
E/S0 (T < 0.92) dominant groups 2066 801 839 426 48.8 $\pm$ 2.2 51.2 $\pm$ 2.2 20.6 $\pm$ 2.5
Mock2, gravitationally unbound groups              
all groups ($n \leq 10$) 6385 2760 2444 1181 52.9 $\pm$ 1.6 47.1 $\pm$ 1.6 18.5 $\pm$ 0.9
spiral ( $T \geq 0.92$) dominant groups 5437 2357 2080 1000 53.0 $\pm$ 1.7 47.0 $\pm$ 1.7 18.4 $\pm$ 1.1
E/S0 (T < 0.92) dominant groups 947 402 364 181 52.4 $\pm$ 2.8 47.6 $\pm$ 2.8 19.1 $\pm$ 1.7
Mock2, bound, wrongly identified              
all groups ($n \leq 10$) 2618 1193 1028 397 53.7 $\pm$ 2.2 46.3 $\pm$ 2.2 15.2 $\pm$ 0.7
spiral ( $T \geq 0.92$) dominant groups 2151 980 840 331 53.8 $\pm$ 2.7 46.2 $\pm$ 2.7 15.4 $\pm$ 1.0
E/S0 (T < 0.92) dominant groups 467 213 188 66 53.1 $\pm$ 1.7 46.9 $\pm$ 1.7 14.1 $\pm$ 3.4
Mock2, unbound, wrongly identified              
all groups ($n \leq 10$) 3591 1661 1379 551 54.6 $\pm$ 1.9 45.4 $\pm$ 1.9 15.3 $\pm$ 1.3
spiral ( $T \geq 0.92$) dominant groups 3291 1535 1260 496 54.8 $\pm$ 2.0 45.2 $\pm$ 2.0 15.1 $\pm$ 1.4
E/S0 (T < 0.92) dominant groups 300 126 119 55 51.4 $\pm$ 5.6 48.6 $\pm$ 5.6 18.3 $\pm$ 4.1
Note: Sample is the subsample of the mock catalogue, $n_{\rm G}$ is the number of groups, $n_{+ \Delta z}$ is the number of groups with positive redshift excess, $n_{- \Delta z}$ is the number of groups with negative redshift excess, $n_{\pm \Delta z}$ is the number of groups with no excess, $+ \Delta z$ is the percentage of groups with positive redshift excess when ties have been removed, $- \Delta z$is the percentage of groups with negative redshift excess when ties have been removed and $\pm \Delta z$ is the percentage of groups having equal number of negative and positive redshifts. Errors for mock catalogues are standard deviation errors between five different observation points.

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