\begin{table}%t1
\par
\caption {{\label{tab:rvs}New {\it RV} measurements for BDs and VLMSs in Cha~I.}}
\renewcommand{\footnoterule}{}  % to avoid a line before footnotes
%\centerline
 {\begin{tabular}{lcccl}
\hline
\hline
Object               &   Date      & HJD           & {\it RV}             & ~$\sigma_{RV}$$^a$ \\
                     &             &               & [km~s$^{-1}$] & [km~s$^{-1}$] \\
\hline
Cha~H$\alpha$~1    & 2006 Jan. 16 & 2~453~751.74004 & 16.206 &  0.39~* \\
Cha~H$\alpha$~2    & 2006 Jan. 16 & 2~453~751.79554 & 16.319 & 0.25~* \\
Cha~H$\alpha$~3    & 2006 Jan. 15 & 2~453~750.81659 & 16.339 & 0.70~* \\
Cha~H$\alpha$~5    & 2006 Jan. 15 & 2~453~750.84774 & 15.697 & 0.03~* \\
Cha~H$\alpha$~6    & 2006 Jan. 16 & 2~453~751.82994 & 16.630 & 0.07~* \\
Cha~H$\alpha$~7    & 2006 Jan. 15 & wrong pointing \\
Cha~H$\alpha$~12   % & 2005 Oct 28 & 2453671.80222 & 13.327 & ? \\
		     & 2006 Jan. 17 & 2~453~752.70145 & 15.831 & 0.05~* \\
B~34                & 2005 Nov. 25 & 2~453~699.83976 & 15.687 & 0.10~*  \\
CHXR~74             & 2005 Mar. 21 & 2~453~450.58923  & 18.185 & 0.06~* \\
                     & 2006 Apr. 10 & 2~453~835.63456  & 17.982 & 0.10 \\
                     & 2006 Jun. 15 & 2~453~901.52267 & 19.063 & 0.10 \\
\hline
\end{tabular}}
\par
\smallskip
$^a$  {Error of the {\it relative} {\it RV}s. 
In most cases (marked with an asterisk) this is the sample standard deviation derived from
two consecutive \mbox{measurements}.}
\end{table}