\begin{table}%tD.2
\caption{\label{HH53vrad1:tab}Radial velocities and line intensities for different optical lines of individual knots in HH~53 from EMMI and B\&C~spectra. Radial velocities are corrected for the cloud speed with respect to the LSR ($v_{\rm LSR}$~= 2~km~s$^{-1}$, Knee \cite{knee}). When detected, two
velocity components are reported.}


\small%\centerline
 {
\begin{tabular}{ccccc}
\hline \hline
\multicolumn{5}{c}{HH~53}\\ 
Knot  & Line & $\lambda$ & $v_{\rm rad}$      & $F\pm\Delta~F$      \\
      & Id.     &   ($\AA$)    & (km~s$^{-1}$) & ($10^{-15}$ erg~s$^{-1}$~cm$^{-2}$)\\
\hline
\multicolumn{5}{c}{EMMI}\\ 
C$-$C1  &  [\ion{O}{i}]  & 6300.3   & $-$101 $\pm$ 4;  $-$32 $\pm$ 4 &   1.9 $\pm$ 0.1; 0.9 $\pm$ 0.2\\
      &  [\ion{O}{i}]  & 6363.8   & --     & 1.0 $\pm$ 0.4  \\
      &  H$\alpha$     & 6562.8   & $-$97 $\pm$ 4; $-$47 $\pm$ 4  & 9.8 $\pm$ 0.1; 2.4 $\pm$ 0.2 \\
      &  [\ion{N}{ii}] & 6583.4   & $-$100 $\pm$ 4; $-$51 $\pm$ 4  & 1.5 $\pm$ 0.1; 0.4 $\pm$ 0.2 \\
      &  [\ion{S}{ii}] & 6716.4   & $-$111 $\pm$ 4; $-$72 $\pm$ 4  & 2.2 $\pm$ 0.1; 0.7 $\pm$ 0.1 \\
      &  [\ion{S}{ii}] & 6730.8   & $-$112 $\pm$ 4; $-$74 $\pm$ 4  & 2.0 $\pm$ 0.1; 0.7 $\pm$ 0.1 \\
E1    &  H$\alpha$     & 6562.8  & $-$65 $\pm$ 4 &   0.9 $\pm$ 0.1   \\
      &  [\ion{S}{ii}] & 6716.4  & $-$74 $\pm$ 4 &   0.7 $\pm$ 0.1   \\
      &  [\ion{S}{ii}] & 6730.8  & $-$76 $\pm$ 4 &   0.7 $\pm$ 0.1   \\
\hline
\multicolumn{5}{c}{B\&C slit~1}\\ 
A     &  [\ion{O}{i}]  & 6300.3   & $-$140 $\pm$ 30     & 4.2 $\pm$ 0.8  \\
      &  H$\alpha$     & 6562.8   & $-$114 $\pm$ 30     & 25.0 $\pm$ 0.6  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$104 $\pm$ 30     & 5.3 $\pm$ 0.8  \\
      &  [\ion{S}{ii}] & 6716.4   & $-$117 $\pm$ 30    & 6.6 $\pm$ 0.4  \\
      &  [\ion{S}{ii}] & 6730.8   & $-$128 $\pm$ 30    & 6.4 $\pm$ 0.5  \\
B     &  [\ion{O}{i}]  & 6300.3   & $-$130 $\pm$ 30    & 6.3 $\pm$ 0.6  \\
      &  [\ion{N}{ii}] & 6548.1   & $-$141 $\pm$ 30    & 2.5 $\pm$ 0.6  \\
      &  H$\alpha$     & 6562.8   & $-$124 $\pm$ 30    & 34.3 $\pm$ 0.6  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$103 $\pm$ 30    & 3.6 $\pm$ 0.5  \\
      &  [\ion{S}{ii}] & 6716.4   & $-$139 $\pm$ 30    & 10.5 $\pm$ 0.5  \\
      &  [\ion{S}{ii}] & 6730.8   & $-$127 $\pm$ 30    & 9.0 $\pm$ 0.6  \\
C     &  H$\alpha$     & 6562.8   & $-$102 $\pm$ 30    & 8.8 $\pm$ 0.6  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$103 $\pm$ 30    & 2.7 $\pm$ 0.5  \\
      &  [\ion{S}{ii}] & 6716.4   & $-$101 $\pm$ 30    & 2.1 $\pm$ 0.6  \\
\hline
\multicolumn{5}{c}{B\&C slit~2}\\
A     &  [\ion{O}{i}]  & 6300.3   & $-$96 $\pm$ 20      & 6.7 $\pm$ 0.1  \\
      &  [\ion{O}{i}]  & 6363.8   & $-$112 $\pm$ 20     & 2.2 $\pm$ 0.1  \\
      &  [\ion{N}{ii}] & 6548.1   & $-$76 $\pm$ 20      & 1.6 $\pm$ 0.1 \\
      &  H$\alpha$     & 6562.8   & $-$106 $\pm$ 20     & 26.3 $\pm$ 0.1  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$82 $\pm$ 20      & 5.1 $\pm$ 0.1  \\
      &  [\ion{S}{ii}] & 6716.4   & $-$115 $\pm$ 20     & 7.2 $\pm$ 0.1  \\
      &  [\ion{S}{ii}] & 6730.8   & $-$111 $\pm$ 20     & 7.8 $\pm$ 0.1 \\
B     &  [\ion{O}{i}]  & 6300.3   & $-$97 $\pm$ 20     & 9.7 $\pm$ 0.1 \\
      &  [\ion{O}{i}]  & 6363.8   & $-$96 $\pm$ 20     & 2.9 $\pm$ 0.1 \\
      &  [\ion{N}{ii}] & 6548.1   & $-$94 $\pm$ 20     & 2.1 $\pm$ 0.1 \\
      &  H$\alpha$     & 6562.8   & $-$98 $\pm$ 20     & 33.3 $\pm$ 0.1 \\
      &  [\ion{N}{ii}] & 6583.4   & $-$94 $\pm$ 20     & 6.9 $\pm$ 0.1 \\
      &  [\ion{S}{ii}] & 6716.4   & $-$106 $\pm$ 20    & 11.5 $\pm$ 0.1 \\
      &  [\ion{S}{ii}] & 6730.8   & $-$112 $\pm$ 20    & 11.3 $\pm$ 0.1 \\
C     &  [\ion{O}{i}]  & 6300.3   & $-$109 $\pm$ 20     & 3.1 $\pm$ 0.1 \\
      &  [\ion{O}{i}]  & 6363.8   & $-$125 $\pm$ 20    & 1.1 $\pm$ 0.1 \\
      &  [\ion{N}{ii}] & 6548.1   & $-$120 $\pm$ 20     & 0.6 $\pm$ 0.1 \\
      &  H$\alpha$     & 6562.8   & $-$122 $\pm$ 20    & 14.2 $\pm$ 0.1  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$120 $\pm$ 20    & 2.0 $\pm$ 0.1 \\
      &  [\ion{S}{ii}] & 6716.4   & $-$116 $\pm$ 20   & 4.5 $\pm$ 0.1 \\
      &  [\ion{S}{ii}] & 6730.8   & $-$111 $\pm$ 20   & 3.9 $\pm$ 0.1 \\
F2    &  [\ion{O}{i}]  & 6300.3   & $-$87 $\pm$ 20    & 1.5 $\pm$ 0.1 \\
      &  [\ion{O}{i}]  & 6363.8   & --            & 0.8 $\pm$ 0.4 \\
      &  [\ion{N}{ii}] & 6548.1   & --            & 1.0 $\pm$ 0.2 \\
      &  H$\alpha$     & 6562.8   & $-$97 $\pm$ 20     & 7.3 $\pm$ 0.2  \\
      &  [\ion{N}{ii}] & 6583.4   & $-$85 $\pm$ 20     & 1.7 $\pm$ 0.2 \\
      &  [\ion{S}{ii}] & 6716.4   & $-$81 $\pm$ 20     & 2.1 $\pm$ 0.2 \\
      &  [\ion{S}{ii}] & 6730.8   & $-$95 $\pm$ 20   & 1.7 $\pm$ 0.2 \\
\hline
\end{tabular}}
\medskip
Notes: $^{a}$ not possible to deblend;
$^{b}$~S/N between 2 and 3.
\end{table}