\begin{table}%t5
%\centering
\par
\caption {\label{tab:uvflux}The unabsorbed UV flux at Earth and intensity at the stellar photosphere, at the wavelength relevant to the radiative pumping of the $f$~transition for the \nvi, \ovii, and \neix~triplets, derived from an IUE spectrum of \bcep. $F_\lambda$ in units of erg~cm$^{-2}$~s$^{-1}$~\AA$^{-1}$, $I_\lambda$ in units of 
erg~cm$^{-2}$~s$^{-1}$~\AA$^{-1}$~sr$^{-1}$.}
\begin{tabular}{lcccc}
\hline\hline\\[-3mm]
&                      $E_{B-V}$ & \nvi\ (1906 \AA) & \ovii\ (1637 \AA) & \neix\ (1270 \AA) \\\hline
$F_\lambda$ &   0.00 & $3.8\times10^{-9}$ & $5.6\times10^{-9}$ & $1.1\times10^{-8}$ \\
$I_\lambda$ &   0.00 & $1.1\times10^{9}$ & $1.6\times10^{9}$ & $3.2\times10^{9}$\\
T  & 0.00 & 19~995 & 21~227 & 23~969 \\ 
$F_\lambda$ &   0.04 & $5.1\times10^{-9}$ & $7.4\times10^{-9}$ & $1.6\times10^{-8}$ \\
$I_\lambda$ &   0.04 & $1.5\times10^{9}$ & $2.1\times10^{9}$ & $4.6\times10^{9}$\\
T  & 0.04 & 21~674 & 22~701 & 25~899 \\
\hline
\end{tabular}
\end{table}