Online Material

Table 2: X-ray, optical and near-infrared properties of the initial candidates.

$\begin{figure} \par\includegraphics[width=17cm,clip]{12053f1a.eps} \end{figure}$	Figure 1: Optical (R) images of the normal galaxy candidates, centred on the X-ray position. The inner radii of the crosses are 6 arcsec and the outer 30 arcsec.
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$\begin{figure} \par\resizebox{17cm}{!}{\includegraphics{12053f3a.eps}} \end{figure}$	Figure 3: Optical spectra of the normal galaxy candidates.
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