\begin{table}%t6
\caption{\label{tab-vr}Doppler shift and nonthermal velocities of chromospheric and
transition region lines measured in the STIS E140H~spectrum of~\object{$\alpha$~Cen~A}.}
%\centerline
{
\begin{tabular}{lccccc}
\hline
\hline
Ion & Log $T_{\rm e}$ & $N^a$ & Velocity   & Nonthermal 
 & Notes$^c$ \\
    &                  &                 &Shift$^b$  & Velocity  \\
     &                  &                 &(km~s$^{-1}$) &(km~s$^{-1}$) 
\\
\hline
Si I     & 3.80 &  80 &   0.00 $\pm$ 0.12 &   7.5 $\pm$  0.3 &   \\
N I      & 3.85 &   5 &  $-$0.12 $\pm$ 0.10 &  14.6 $\pm$  2.6 &   \\
S I      & 3.95 &  37 &   0.59 $\pm$ 0.07 &   7.6 $\pm$  0.4 &   \\
C I      & 4.11 &  82 &   0.61 $\pm$ 0.09 &   9.9 $\pm$  0.3 &   \\
Fe II    & 4.23 &  90 &   1.50 $\pm$ 0.17 &  10.8 $\pm$  0.3 &   \\
Ni II    & 4.25 &  18 &   1.07 $\pm$ 0.34 &  10.9 $\pm$  0.8 &   \\
Si II    & 4.26 &   9 &   1.21 $\pm$ 0.05 &  23.7 $\pm$  2.3 &   \\
O I      & 4.31 &   3 &   1.01 $\pm$ 0.83 &  11.9 $\pm$  3.2 &   \\
S II     & 4.48 &   2 &   2.27 $\pm$ 1.17 &  15.4 $\pm$  0.4 &   \\
C II     & 4.62 &   2 &   1.68 $\pm$ 0.83 &  27.4 $\pm$  1.3 &    1 \\
C III    & 4.75 &   5 &   3.98 $\pm$ 0.64 &  28.7 $\pm$  0.7 &   \\
Si III   & 4.78 &   3 &   6.92 $\pm$ 0.25 &  27.1 $\pm$  1.3 &   \\
S III    & 4.81 &   1 &   5.05 $\pm$ 0.07 &  22.5 $\pm$  0.3 &    1  \\
Si IV    & 4.84 &   2 &   4.99 $\pm$ 1.47 &  25.7 $\pm$  0.5 &    1  \\
O III    & 4.97 &   2 &   4.73 $\pm$ 1.08 &  19.8 $\pm$  7.3 &    1  \\
C IV     & 5.03 &   2 &   7.28 $\pm$ 0.43 &  30.2 $\pm$  1.0 &    1  \\
O IV     & 5.21 &   2 &   7.25 $\pm$ 1.20 &  27.0 $\pm$  0.5 &   \\
N V      & 5.25 &   2 &   3.87 $\pm$ 0.19 &  30.2 $\pm$  1.1 &    1   \\
S V      & 5.26 &   1 &  11.49 $\pm$ 0.93 &  38.9 $\pm$  0.2 &   \\
O V      & 5.37 &   2 &   6.13 $\pm$ 1.25 &  33.1 $\pm$  0.1 &    1   \\
\hline
\end{tabular}}
\smallskip
$^a$ Number of lines selected to compute the velocity shift 
and \mbox{nonthermal} velocity.\\
$^b$ Doppler shift computed assuming as reference the
    measured mean velocity of \ion{Si}{i}~lines, --23.85 $\pm$ 0.09
         km~s$^{-1}$.\\
$^c$ We use $1$ in this column to flag the ions for which
               all  the measured lines were used to compute the velocity shift
               and nonthermal velocity.
\end{table}