$\begin{figure} \par\includegraphics[width=8.5cm,clip]{4093_f1.eps} \end{figure}$ Figure 1: Two examples of SEDs of Herbig Ae stars of the sample of Meeus et al. showing the qualitative difference in the SEDs of group I sources and group II sources.
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In the text

$\begin{figure} \par\includegraphics[width=7.9cm,clip]{4093_f2a.eps}\hspace*{1.2cm} \includegraphics[width=7.9cm,clip]{4093_f2b.eps}\end{figure}$ Figure 2: The temperature and density structure as a function of spherical radius r and polar angle $\theta$ ( $\pi /2$ is the equatorial plane, i.e. the bottom of the figure) for model A1 ( left) and A4 ( right). The grey-scale contours (accentuated by the dotted contour lines) are density. These are spaced logarithmically in steps of a factor 3.3. The solid contours are temperature. The temperature contours are spaced 50 K apart. The small tick mark on one of these contours tags the 200 K contour.
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In the text

$\begin{figure} \par\includegraphics[width=7.9cm,clip]{4093_f3a.eps}\hspace*{1.2cm} \includegraphics[width=7.9cm,clip]{4093_f3b.eps}\end{figure}$ Figure 3: As Fig. 2, but instead of temperature contours, the figure shows the surface of $\tau_{0.55~\mu {\rm m},{\rm radial}}=1$ (solid), and $\tau_{3~\mu {\rm m,radial}}=1$ (dashed). The shape of these curves clearly show that the left model is flared while the right model is self-shadowed. In the flared model it is also seen that the flaring starts for real beyond about 8 AU; between 0.5 and 8 AU the curve stays at almost constant $\Theta$ , typical for the shadowed region of the disk.
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In the text

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{4093_f5.eps}\end{figure}$ Figure 5: The SEDs of models A1...A4 plotted over each other. The SEDs are at inclination $i=45^{\circ }$ .
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In the text

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{4093_f6.eps}\end{figure}$ Figure 6: The SEDs of models B1...B6 plotted over each other. The SEDs are at inclination $i=45^{\circ }$ .
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In the text

$\begin{figure} \par\includegraphics[width=8.2cm,clip]{4093_f7.eps}\end{figure}$ Figure 7: The SEDs of models BL1...BL6 plotted over each other. The SEDs are at inclination $i=45^{\circ }$ .
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{4093_f9.eps}\end{figure}$ Figure 9: Pictographic representation of how the shadowed regions of the disk can be irradiated in an indirect way through thermal emission of (and scattering off) the upper part of the puffed-up inner rim. Note that the geometry is exaggerated in this pictogram.
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In the text

$\begin{figure} \par\includegraphics[width=8.5cm,clip]{4093_f1.eps} \end{figure}$	Figure 1: Two examples of SEDs of Herbig Ae stars of the sample of Meeus et al. showing the qualitative difference in the SEDs of group I sources and group II sources.
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$\begin{figure} \par\includegraphics[width=7.9cm,clip]{4093_f4a.eps}\hspace*{1.6cm} \includegraphics[width=7.9cm,clip]{4093_f4b.eps}\end{figure}$	Figure 4: As Fig. 3, but this time for model B1 ( left) and B5 ( right).
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$\begin{figure} \par\includegraphics[width=8.2cm,clip]{4093_f5.eps}\end{figure}$	Figure 5: The SEDs of models A1...A4 plotted over each other. The SEDs are at inclination $i=45^{\circ }$ .
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$\begin{figure} \par\includegraphics[width=8.2cm,clip]{4093_f6.eps}\end{figure}$	Figure 6: The SEDs of models B1...B6 plotted over each other. The SEDs are at inclination $i=45^{\circ }$ .
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$\begin{figure} \par\includegraphics[width=8.2cm,clip]{4093_f7.eps}\end{figure}$	Figure 7: The SEDs of models BL1...BL6 plotted over each other. The SEDs are at inclination $i=45^{\circ }$ .
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$\begin{figure} \par\mbox{\hspace{2.4cm}Group I (flared disk) \hspace{5cm} Grou... ...f8a.eps}\hspace*{8mm} \includegraphics[width=7.5cm]{4093_f8b.eps} } \end{figure}$	Figure 8: Pictographic representation of the two disk geometries found.
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$\begin{figure} \par\includegraphics[width=7cm,clip]{4093_f9.eps}\end{figure}$	Figure 9: Pictographic representation of how the shadowed regions of the disk can be irradiated in an indirect way through thermal emission of (and scattering off) the upper part of the puffed-up inner rim. Note that the geometry is exaggerated in this pictogram.
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