\begin{table}%t2 \caption {\label{tab:emissionlines}Equivalent widths~(${\rm \AA}$) and radial velocities~(km~s$^{-1}$) for the H$\alpha$, Pa$\delta$ and He~I~$\lambda$7065 emission lines$^{a,b}$.} \small%\centerline { \begin{tabular}{c|ccccc|cc|cc} \hline\hline &&&&&&&&&\\[-8pt] & \multicolumn{5}{c|}{H$\alpha$} & \multicolumn{2}{c|}{Pa$\delta$} & \multicolumn{2}{c}{He~I $\lambda$7065} \\ date & {\it EW} & $V_{\rm r}$(b)& $V_{\rm r}$ & $V_{\rm r}$(r) & $\Delta V_{\rm r}$ & {\it EW}$^{c}$ & $V_{\rm r}$ & {\it EW} & $V_{\rm r}$ \\ \hline 21/09/2003 & --22.3 $\pm$ 0.2 & --75.4 & --51.6 & --26.0 & 49.4 & --1.10 $\pm$ 0.08 & --52.7 & --0.79 $\pm$ 0.03 & --48.9 \\ 03/04/2004 & --25.4 $\pm$ 0.2 & --71.2 & --58.4 & --32.8 & 38.4 & --1.13 $\pm$ 0.08 & --50.2 & --0.49 $\pm$ 0.05 & --35.0 \\ 09/06/2004 & --25.2 $\pm$ 0.2 & --73.8 & --61.4 & --34.0 & 39.8 & --1.15 $\pm$ 0.08 & --51.7 & --0.86 $\pm$ 0.03 & --45.6 \\ 10/07/2004 & --24.5 $\pm$ 0.2 & --74.2 & --59.2 & --31.3 & 42.9 & --1.03 $\pm$ 0.08 & --50.2 & --0.87 $\pm$ 0.03 & --43.3 \\ 28/09/2004 & --23.9 $\pm$ 0.2 & --72.6 & --61.6 & --31.1 & 41.6 & --1.05 $\pm$ 0.08 & --49.3 & --0.84 $\pm$ 0.03 & --44.1 \\ \hline 29/05/2005 & --21.2 $\pm$ 0.3 & -- & -- & --34.3 $\pm$ 6& -- & -- & -- & --0.80 $\pm$ 0.06 & --47.1 \\ \hline \end{tabular}} \medskip $^{a}$ For the double-peaked H$\alpha$ line radial velocities are given for the bluewards and redwards peaks, $V_{\rm r}$(b) and $V_{\rm r}$(r), the central absorption feature, $V_{\rm r}$, and the separation of the two peaks, $\Delta V_{\rm r}$. \\ $^{b}$ Except where noted, errors are conservatively estimated at $\pm$4~km~s$^{-1}$ for the H$\alpha$~radial velocities and ${\le}\pm8$~km~s$^{-1}$ for the He~I~$\lambda$7065 and Pa$\delta$~radial velocities. \\ $^{c}$ The equivalent width of the Pa$\delta$ line includes the absorption components seen in Fig.~\ref{fig:HaPd} on either side of the emission line. If these are excluded, then the equivalent width is broadly constant at $\sim$1.35~$\pm$ 0.15~${\rm \AA}$ (with increased errors due to the difficulty of estimating the continuum). \vspace*{5mm} \end{table}