\begin{table}%t3
\caption{Projected rotational velocity derived from the Fourier and \fwhm~analyses. References from the  literature are: $^a$~Sim\'on-D\'{\i}az et~al. (\cite{Sim03}), $^b$~Howarth et~al. (\cite{How97}), $^c$~McNamara \& Larsson (\cite{McN62}), $^d$~Sch\"onberner et~al. (\cite{Sch88}), $^e$~Killian et~al. (\cite{Kil91}).}\label{t2}
%\centering
\par
\begin{tabular}{c c c c }    
\hline
\hline
 HD~ & \multicolumn{3}{c}{\vsini\ (\kms)}  \\
\hline
 & \multicolumn{2}{c}{This work} & Other authors \\
\cline{2-4}
 & Fourier & \fwhm & \fwhm \\
\hline
 HD~37020  & 55.0 $\pm$ 0.6 & 57 $\pm$ 3 & 56$^a$ \\
 HD~37022  & 24 $\pm$ 3     & 40 $\pm$ 11 & 53$^b$ \\
 HD~37023  & 49.0 $\pm$ 0.9 & 51 $\pm$ 3 & 51$^a$ \\
 HD~37041  & 131 $\pm$ 4    & 140 $\pm$ 11 & 110$^b$ \\
 HD~37042  & 34.0 $\pm$ 0.5 & 36 $\pm$ 3 & 10$^c$ \\
 HD~214680 & 30.0 $\pm$ 0.8 & 37 $\pm$ 4 & 35$^b$ \\
 HD~47839  &  67 $\pm$ 4    & 66 $\pm$ 6 & 67$^b$ \\
 HD~149438 & $<$13           & 16 $\pm$ 3 & 5$^d$, 19$^e$ \\
\hline
\end{tabular}
\end{table}