Table 2: Table showing the mean velocities $\overline {v}$ and velocity dispersions $\sigma _v$ of all, only bright (V<20 mag) and only faint (V>20 mag) Fornax members. Samples considered are: the entire FCOS-sample (FCOS-1 and FCOS-2); the FCOS-sample corrected for the systematic velocity differences between FCOS-1 and FCOS-2 (see Sects. 3.1 and 4.1); and the shift corrected FCOS-sample + additional Fornax members from Dirsch et al. (2004) + the 2 UCDs not observed in the FCOS, taken from Karick et al. (2003). The column "Dif. Conf.'' gives the confidence limit in percent for the hypothesis of the bright and faint value being different, derived with a t-test for the means and with an F-test for the dispersions.
Samples $\overline{v}_{\rm all}$ $\overline{v}_{\rm bright}$ $\overline{v}_{\rm faint}$ Dif. Conf. $\sigma _{v,\rm all}$ $\sigma _{v,\rm bright}$ $\sigma _{v,\rm faint}$ Dif. Conf.
FCOS 1425 $\pm$ 45 1565 $\pm$ 77 1396 $\pm$ 51 85% $\rm 326^{+42}_{-32}$ $\rm 236^{+86}_{-40}$ $\rm 335^{+47}_{-36}$ 74%
FCOS shift-corrected (sc) 1408 $\pm$ 44 1541 $\pm$ 83 1381 $\pm$ 50 83% $\rm 322^{+42}_{-32}$ $\rm 255^{+93}_{-43}$ $\rm 328^{+46}_{-35}$ 57%
FCOS sc + Dirsch + Karick 1408 $\pm$ 41 1584 $\pm$ 85 1367 $\pm$ 45 96% $\rm 326^{+39}_{-30}$ $\rm 302^{+96}_{-45}$ $\rm 320^{+42}_{-32}$ 12%


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