$\begin{figure} \par\includegraphics[width=8.8cm,clip]{3441f1a.ps}\par\vspace*{2mm} \includegraphics[width=8.8cm,clip]{3441f1b.ps} \end{figure}$ Figure 1: NEP 1239: ( top) longslit spectrum of RXJ 1715.4+6239, QSO 2 candidate at z=0.85, obtained with the University of Hawai'i 2.2 m telescope; ( bottom) longslit spectrum of the same object at redder wavelengths taken at the TNG 3.6 m telescope. The dashed lines indicate the positions of the emission lines at the object redshift. Wavelengths of atmospheric absorption (or bad sky subtracion) are also indicated.
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In the text

$\begin{figure} \par\includegraphics[width=8.74cm,clip]{3441f2a.ps}\par\vspace*{4... ...\par\vspace*{4mm} \includegraphics[width=8.74cm,clip]{3441f2c.ps} \end{figure}$ Figure 2: NEP 1640: ( top) longslit spectrum of RXJ 1724.9+6636, QSO 2 candidate at z=0.6758, obtained with the University of Hawai'i 2.2 m telescope; ( center) longslit spectrum of the same object taken at the TNG 3.6 m telescope with the High Resolution grism and ( bottom) the Medium Resolution grism. The dashed lines indicate the positions of the emission lines at the object redshift. Wavelengths of atmospheric absorption (or bad sky subtracion) are also indicated.
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In the text

$\begin{figure} \par\includegraphics[width=8.6cm,clip]{3441f3a.ps}\par\vspace*{2mm} \includegraphics[width=8.6cm,clip]{3441f3b.ps} \end{figure}$ Figure 3: NEP 2131: longslit spectrum of RX J1737.0+6601, QSO 2 candidate at z=0.358, obtained with the TNG 3.6 m telescope and the Medium Resolution grism in the bluer ( top) and redder ( bottom) wavelength region. The dashed lines indicate the positions of the emission lines at the object redshift. Wavelengths of bad sky subtraction are also indicated.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f4.ps} \end{figure}$ Figure 4: X-ray spectra and model ( upper panel) and ratio between the two ( lower panel) for NEP 1239.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f5.ps} \end{figure}$ Figure 5: X-ray spectra and model ( upper panel) and ratio between the two ( lower panel) for NEP 1640.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f6.ps} \end{figure}$ Figure 6: X-ray spectra and model ( upper panel) and ratio between the two ( lower panel) for NEP 2131.
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In the text

$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f7.ps} \end{figure}$ Figure 7: Contour plot of the two free parameters in absori + power law, $N_{\rm H}$ and $\xi$ , for NEP 2131. The power law slope is fixed to the best fit value of $\Gamma = 1.7$ .
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In the text

$\begin{figure} \par\includegraphics[width=8.6cm,clip]{3441f3a.ps}\par\vspace*{2mm} \includegraphics[width=8.6cm,clip]{3441f3b.ps} \end{figure}$	Figure 3: NEP 2131: longslit spectrum of RX J1737.0+6601, QSO 2 candidate at z=0.358, obtained with the TNG 3.6 m telescope and the Medium Resolution grism in the bluer ( top) and redder ( bottom) wavelength region. The dashed lines indicate the positions of the emission lines at the object redshift. Wavelengths of bad sky subtraction are also indicated.
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$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f4.ps} \end{figure}$	Figure 4: X-ray spectra and model ( upper panel) and ratio between the two ( lower panel) for NEP 1239.
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$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f5.ps} \end{figure}$	Figure 5: X-ray spectra and model ( upper panel) and ratio between the two ( lower panel) for NEP 1640.
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$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f6.ps} \end{figure}$	Figure 6: X-ray spectra and model ( upper panel) and ratio between the two ( lower panel) for NEP 2131.
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$\begin{figure} \par\includegraphics[angle=-90,width=8cm,clip]{3441f7.ps} \end{figure}$	Figure 7: Contour plot of the two free parameters in absori + power law, $N_{\rm H}$ and $\xi$ , for NEP 2131. The power law slope is fixed to the best fit value of $\Gamma = 1.7$ .
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