**Table 2:** Virial mass estimates.
$\begin{table}% latex2html id marker 2151\begin{displaymath} \begin{array}{l r... ...\sigma_V$\space computed within 0.18 Mpc (see Table~\ref{tab1}). \par\end{table}$

	1 Introduction
	2 Member selection and global properties
	3 Dynamical analysis
	4 Discussion
	5 Summary and conclusions
	References