Table 4: Equivalent widths, and FWHM of all identified emission lines in the 2002 and 2003 spectrum of V840 Oph. For 2003 also the line flux as measured and dereddened (same units) is given. Note that the uncertainty of the line flux describes the uncertainty of the relative flux in the line and does not include the photometric error.
  April 2002         February 2003
Transition FWHM [nm] -W [nm]   FWHM [nm] -W [nm] F [10-18 W m-2] dereddened
H$_\alpha$ $2.44 \pm 0.03$ $1.55 \pm 0.15$   $3.18 \pm 0.03$ $1.66 \pm 0.05$ $0.92 \pm 0.04$ 2.28 $\pm$ 0.10
H$_\beta$ $2.15 \pm 0.08$ $1.35 \pm 0.12$   $2.45 \pm 0.05$ $1.51 \pm 0.06$ $1.37 \pm 0.04$ 5.22 $\pm$ 0.15
H$_\gamma$       $2.63 \pm 0.08$ $1.58 \pm 0.06$ $1.84 \pm 0.04$ 8.30 $\pm$ 0.18
He I$\lambda $668   <0.1   $3.20 \pm 0.50$ $0.27 \pm 0.10$ $0.15 \pm 0.10$ 0.36 $\pm$ 0.24
He I$\lambda $588 *   <0.1   >1.50 >0.12 >0.08  
He I$\lambda $447       $2.47 \pm 0.08$ $0.38 \pm 0.05$ $0.42 \pm 0.03$ 1.82 $\pm$ 0.13
He II $\lambda $541 $1.74 \pm 0.07$ $0.4 \pm 0.1$   $2.55 \pm 0.04$ $0.61 \pm 0.05$ $0.45 \pm 0.03$ 1.43 $\pm$ 0.09
He II $\lambda $469 **       $2.16 \pm 0.15$ $1.50 \pm 0.07$ $1.45 \pm 0.05$ 5.84 $\pm$ 0.20
He II $\lambda $454       $2.47 \pm 0.08$ $0.37 \pm 0.05$ $0.40 \pm 0.04$ 1.69 $\pm$ 0.17
C III $\lambda $570   <0.1   $2.57 \pm 0.30$ $0.30 \pm 0.04$ $0.21 \pm 0.02$ 0.62 $\pm$ 0.06
C IV $\lambda\lambda$580/1 $1.71 \pm 0.02$ $0.7 \pm 0.1$   $2.46 \pm 0.04$ $0.96 \pm 0.03$ $0.65 \pm 0.02$ 1.89 $\pm$ 0.06
Bowen blend **       $3.21 \pm 0.15$ $1.64 \pm 0.07$ $1.64 \pm 0.05$ 6.70 $\pm$ 0.20
* This He I line is disrupted by the nearby Na absorption line.
** The properties have been derived by fitting five ion components to these blended lines (see text and Fig. 5).

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