All Figures

$\begin{figure} \par\subfigure[]{\includegraphics[width=14.5cm]{4872fi1a.ps} } \subfigure[]{\includegraphics[width=14.5cm]{4872fi1b.ps} }\end{figure}$ Figure 1: Bessel-R, Bessel-I broad-band images and F810, F815, and F823 narrow-band images of 2 examples of our targets: a) the second brightest candidate (No. 12); b) object with an intermediate flux and visible in two narrow-band filters (No. 13). Each image shows a 10 $^{\prime \prime }$ $\times$ 10 $^{\prime \prime }$ area centered on the target.
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In the text

$\begin{figure} \par\mbox{\subfigure[FDFLAE-1]{\includegraphics[clip=true,width=5... ...-7757]{\includegraphics[clip=true,width=5.5cm]{4872fi2i.ps} }} \par \end{figure}$ Figure 2: Observed emission line profiles of the LAE candidates. For comparison the [OII] 3727 doublet of FDF-7757 at $z_{\rm {phot}} = 1.22$ is also included.
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In the text

$\begin{figure} \par\includegraphics[width=15cm,clip]{4872fi3.ps} \end{figure}$ Figure 3: The spatial distribution of the narrow-line excess objects in the FDF (shown is a deep I-band image). Circles correspond to objects found in the narrow-band F810, triangles to objects detected in the narrow-band F815, and crosses to objects found in the narrow-band F823. North is up, east is left. The field is $7 \times 7$ arcmin large, which corresponds to 2.5 Mpc $\times$ 2.5 Mpc (physical) or 17 Mpc $\times$ 7 Mpc (comoving).
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In the text

$\begin{figure} \includegraphics[width=6cm,angle=-90]{4872fi4.ps} \end{figure}$ Figure 4: Distribution of redshifts of the eight LAE candidates observed spectroscopically.
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In the text

$\begin{figure} \includegraphics[width=6cm,angle=-90]{4872fi5.ps} \end{figure}$ Figure 5: The distribution of the photometric line fluxes of the 15 LAE candidates.
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In the text

$\begin{figure} \includegraphics[width=6cm,angle=-90]{4872fi6.ps} \end{figure}$ Figure 6: The distribution of the star-formation rates derived from the photometric line fluxes.
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In the text

$\begin{figure} \resizebox{8.8cm}{!}{\includegraphics[clip=true]{4872fi7.ps}} \end{figure}$ Figure 7: Composite spectra of the eight emission line objects. The dotted line is the instrumental profile, derived from the sky lines.
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In the text

$\begin{figure} \resizebox{8.8cm}{!}{\includegraphics[angle=-90]{4872fi8.ps}} \end{figure}$ Figure 8: Luminosity function derived from the photometric data (filled squares). Two surveys at a redshift of z = 5.7 have been included: circles correspond to the 19 spectroscopically confirmed candidates of Hu et al. (2004) and open squares to Ajiki et al. (2003). Two surveys at a redshift of $z\approx 3.2$ are also included: triangles correspond to Kudritzki et al. (2000), crosses to Cowie & Hu (1998). Moreover, a Schechter function (Breukelen et al. 2005) for ${\rm Ly}{\alpha }$ emitters with 2.3 < z < 4.6 (solid line) and a Schechter function (Malhotra & Rhoads 2004) for LAEs at $z \approx 5.7$ (dotted line) are plotted. The error bars denote statistical mean errors.
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In the text

$\begin{figure} \par {\hbox{ FDFLAE-01 \hspace*{0cm} \psfig{figure=4872f9aa.ps,wi... ... \psfig{figure=4872f9he.ps,width=2.8cm,height=2.8cm,clip=t} }} \par \end{figure}$ Figure 9: From left to right: B, I, and narrow-band (810/7, 815/5, 823/6) thumbnail images of Ly- $\alpha$ galaxy candidates FDFLAE-01 to FDFLAE-08 in the FORS Deep Field. The position of the object is marked with a circle. FOV is 20 $^{\prime \prime }$ $\times$ 20 $^{\prime \prime }$ , North is up, east to the left.
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In the text

$\begin{figure} {\hbox{ FDFLAE-9 \hspace*{0cm} \psfig{figure=4872f9ia.ps,width=2.... ...1cm} \psfig{figure=4872f9oe.ps,width=2.8cm,height=2.8cm,clip=t} }}\end{figure}$ Figure 9: continued. From left to right: B, I, and narrow-band (810/7, 815/5, 823/6) thumbnail images of Ly- $\alpha$ galaxy candidates FDFLAE-09 to FDFLAE-15 in the FORS Deep Field.
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In the text

$\begin{figure} \par\subfigure[]{\includegraphics[width=14.5cm]{4872fi1a.ps} } \subfigure[]{\includegraphics[width=14.5cm]{4872fi1b.ps} }\end{figure}$	Figure 1: Bessel-R, Bessel-I broad-band images and F810, F815, and F823 narrow-band images of 2 examples of our targets: a) the second brightest candidate (No. 12); b) object with an intermediate flux and visible in two narrow-band filters (No. 13). Each image shows a 10 $^{\prime \prime }$ $\times$ 10 $^{\prime \prime }$ area centered on the target.
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$\begin{figure} \par\mbox{\subfigure[FDFLAE-1]{\includegraphics[clip=true,width=5... ...-7757]{\includegraphics[clip=true,width=5.5cm]{4872fi2i.ps} }} \par \end{figure}$	Figure 2: Observed emission line profiles of the LAE candidates. For comparison the [OII] 3727 doublet of FDF-7757 at $z_{\rm {phot}} = 1.22$ is also included.
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$\begin{figure} \includegraphics[width=6cm,angle=-90]{4872fi4.ps} \end{figure}$	Figure 4: Distribution of redshifts of the eight LAE candidates observed spectroscopically.
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$\begin{figure} \includegraphics[width=6cm,angle=-90]{4872fi5.ps} \end{figure}$	Figure 5: The distribution of the photometric line fluxes of the 15 LAE candidates.
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$\begin{figure} \includegraphics[width=6cm,angle=-90]{4872fi6.ps} \end{figure}$	Figure 6: The distribution of the star-formation rates derived from the photometric line fluxes.
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$\begin{figure} \resizebox{8.8cm}{!}{\includegraphics[clip=true]{4872fi7.ps}} \end{figure}$	Figure 7: Composite spectra of the eight emission line objects. The dotted line is the instrumental profile, derived from the sky lines.
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$\begin{figure} \par {\hbox{ FDFLAE-01 \hspace*{0cm} \psfig{figure=4872f9aa.ps,wi... ... \psfig{figure=4872f9he.ps,width=2.8cm,height=2.8cm,clip=t} }} \par \end{figure}$	Figure 9: From left to right: B, I, and narrow-band (810/7, 815/5, 823/6) thumbnail images of Ly- $\alpha$ galaxy candidates FDFLAE-01 to FDFLAE-08 in the FORS Deep Field. The position of the object is marked with a circle. FOV is 20 $^{\prime \prime }$ $\times$ 20 $^{\prime \prime }$ , North is up, east to the left.
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$\begin{figure} {\hbox{ FDFLAE-9 \hspace*{0cm} \psfig{figure=4872f9ia.ps,width=2.... ...1cm} \psfig{figure=4872f9oe.ps,width=2.8cm,height=2.8cm,clip=t} }}\end{figure}$	Figure 9: continued. From left to right: B, I, and narrow-band (810/7, 815/5, 823/6) thumbnail images of Ly- $\alpha$ galaxy candidates FDFLAE-09 to FDFLAE-15 in the FORS Deep Field.
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