\begin{table}%t2
\caption{\label{lick_beasley}Linear fit coefficients to convert the Beasley (B04) indices into the Lick system.}
%\centering
\small
  \begin{tabular}{lrrr}
    \hline\hline\noalign{\smallskip}
    Index & $a$& $b$ &rms \\
    \hline
Mg2     & --0.008  & 1.002 & 0.006 \\ 
Mgb	& --0.051  & 1.076 & 0.187\\
Fe5270  &  0.377  & 0.757 & 0.217 \\
Fe5335  & --0.009  & 0.872 & 0.205\\ 
\hline
\end{tabular} 
\end{table}