\begin{table}%t5
\caption{\label{tab:accrate}Mass accretion rate.}
\small%\centerline
 {
\begin{tabular}{l@{\hspace{8mm}}c@{\hspace{1mm}}c@{\hspace{8mm}}c@{\hspace{1mm}}c}
\hline\hline
&&&& \\[-8pt]
Star   & $\dot{M}$         & Ref. & $\dot{M}_{\rm X}$ & Ref. \\
\hline
&&&& \\[-8pt]
\object{MP~Mus} & $3\times10^{-9}$  & (0)  & $8\times10^{-11}$ & (1) \\
\object{TW~Hya} & $2\times10^{-9}$  & (2)  & $2\times10^{-10}$ & (3) \\
\object{BP~Tau} & $2\times10^{-8}$  & (4)  & $9\times10^{-10}$ & (5) \\
\hline
\end{tabular}}
\medskip
 (0) this work; (1)~\citet{SaccoArgiroffi2008}; (2) \citet{AlencarBatalha2002}; (3)~\citet{GuntherSchmitt2007}; (4)~\citet{ArdilaBasri2000}; (5)~\citet{SchmittRobrade2005}.
\end{table}