All Figures

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{4203fig1.eps}\end{figure}$ Figure 1: $L_{{\rm [OIII]}}$ / $L_{{\rm 2-10}}$ vs. L(2-10 keV) for X-ray selected type-II AGNs. Full squares are data for the new high redshift sources using the "effective'' [O III] $\lambda 5007$ luminosity as described in the text. Open squares are sources with measureable [O II] $\lambda 3727$ line. The solid line is a fit to the entire sample and the dotted line a fit to the [O II] $\lambda 3727$ sample only. Dashed lines are best fits to the Bassani et al. (1999) modified sample (see text). Lower curve: observed fluxes. Upper curve: line fluxes corrected for reddening.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.45cm,clip]{4203fig2.eps}\end{figure}$ Figure 2: Same as Fig. 1 but for type-I sources. Open symbols: data from M 94, A97 and Heckman et al. (2005). Full squares: data from BG92 and Piconcelli et al. (2005). The solid line is a linear fit to the data and the dotted line the fit to the type-II sample. Lower and upper dashed lines are the Bassani et al. (1999) curves shown in Fig. 1.
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.3cm,clip]{4203fig3.eps}\end{figure}$ Figure 3: The median EW([O III] $\lambda 5007$ ) as a function of redshift ( left) and continuum luminosity ( $\lambda L_{\lambda }$ at 5100 Å, right) for 11 900 type-I SDSS AGNs. The luminosity dependence is shown for three different redshift bands (solid lines with symbols) and the entire sample (dotted line).
Open with DEXTER

In the text

$\begin{figure} \par\includegraphics[width=7.45cm,clip]{4203fig2.eps}\end{figure}$	Figure 2: Same as Fig. 1 but for type-I sources. Open symbols: data from M 94, A97 and Heckman et al. (2005). Full squares: data from BG92 and Piconcelli et al. (2005). The solid line is a linear fit to the data and the dotted line the fit to the type-II sample. Lower and upper dashed lines are the Bassani et al. (1999) curves shown in Fig. 1.
Open with DEXTER

$\begin{figure} \par\includegraphics[width=7.3cm,clip]{4203fig3.eps}\end{figure}$	Figure 3: The median EW([O III] $\lambda 5007$ ) as a function of redshift ( left) and continuum luminosity ( $\lambda L_{\lambda }$ at 5100 Å, right) for 11 900 type-I SDSS AGNs. The luminosity dependence is shown for three different redshift bands (solid lines with symbols) and the entire sample (dotted line).
Open with DEXTER