\begin{table}%t3
     \caption{\label{tab3}The atmospheric parameters and rotational velocities
 of the investigated stars.}
 %\centering
\par
\begin{tabular}{lccccc}
\hline\hline
Star name       & \teff   & \lgg   & \vt  & \vsini & $\log({\rm Si}/N_{\rm tot})$ \\
or HD           &         &         & \kms & \kms   &                     \\
\hline
  Sun           & 5777    & 4.44    & 0.75       & 1.6  & --4.49 \\
 HD 122970      & 6930    & 4.11    & 0.85       & 5.0  & --4.45 \\
 HD 32115       & 7250    & 4.20    & 2.30       & 9.0  & --4.65 \\
 10 Aql         & 7550    & 4.00    & 0.00       & 5.0  & strat \\
\hline
\end{tabular}
\end{table}