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Table 2:

Equivalent widths (${\rm\AA}$) and radial velocities (km s-1) for the H$\alpha $, Pa$\delta $ and He I $\lambda $7065 emission linesa,b.
  H$\alpha $ Pa$\delta $ He I $\lambda $7065
date EW $V_{\rm r}$(b) $V_{\rm r}$ $V_{\rm r}$(r) $\Delta V_{\rm r}$ EWc $V_{\rm r}$ EW $V_{\rm r}$
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
29/05/2005 -21.2 $\pm$ 0.3 - - -34.3 $\pm$ 6 - - - -0.80 $\pm$ 0.06 -47.1

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. 2 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).


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