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Table B.1

Galaxy groups identified in the 2M++ catalogue (Lavaux & Hudson 2011).

Id Ng RA Dec vcm σv Rvir vir
[deg] [deg] [km s-1] [km s-1] [Mpc h-1] [1014− ∞]

1 4 324.127 –83.894 18002.965 224.195 1.250 0.4383
2 4 5.229 –81.026 16871.429 213.153 1.464 0.4640
3 4 337.707 –80.216 11734.202 187.328 1.208 0.2956
4 6 336.104 –80.243 11217.477 223.655 0.515 0.1796
5 5 253.364 –79.943 12761.345 271.959 1.104 0.5697
6 10 278.508 –77.019 5597.198 84.888 0.922 0.0463
7 4 74.464 –74.851 5806.220 193.855 0.598 0.1568
8 5 101.298 –74.279 6377.974 200.810 0.383 0.1076
9 4 94.245 –74.193 11696.234 76.082 0.751 0.0303
10 7 101.903 –71.665 4281.469 80.630 0.730 0.0331
11 9 304.395 –70.813 3710.980 223.876 0.115 0.0403
12 4 285.085 –69.761 14098.694 193.275 1.368 0.3565
13 4 93.125 –67.870 10871.720 89.479 0.890 0.0497
14 4 339.991 –66.724 12378.471 283.765 0.441 0.2479
15 7 92.323 –65.670 10952.375 254.096 0.893 0.4020
16 4 103.901 –65.527 8988.492 135.257 0.495 0.0631
17 5 94.878 –65.094 8748.338 119.096 1.161 0.1149
18 4 341.554 –65.201 3389.487 139.634 0.429 0.0584
19 24 95.603 –64.903 7729.567 439.018 0.688 0.9251
20 5 101.649 –64.124 3485.746 66.548 0.554 0.0171

Notes. Group ID, Number of galaxies linked by the FoF algorithm, RA: group centre right ascension (J2000), Dec: group centre declination (J2000), vcm: mean group radial velocity, σv: radial velocity dispersion, Rvir: 3D virial radius, vir: group virial mass. Groups in this table were identified using a FoF algorithm with a contour overdensity contrast of 433, and having four or more members, mean group radial velocities greater than 3000 km s-1, and virial masses greater than 1012h-1. The complete table can be found at the CDS.

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