Online Material

Table 4: Parameters for the underlying stellar host derived from the 2D Sérsic fit.

$\begin{figure}\par\includegraphics[width=17.5cm,angle=0]{9591f14a.eps}\\ [7pt] ... ...7pt] \includegraphics[width=17.5cm,angle=0]{9591f14e.eps}\\ [7pt]\end{figure}$

Figure 10:

Atlas of galaxy images I: Galaxies with Q=1. Broad-band galaxy images ( left), the best 2D Sérsic model ( centre) and the residual image ( right) of the 20 galaxies fitted with quality index Q=1 in the full sample of 28 BCGs. Broad-band images and 2D Sérsic models are showed in surface brightness grey scale (magnitude per square arcseconds). Realistic Poissonian noise are included in the 2D models. Residual images, i.e. galaxy-model, are displayed in an inverted linear grey scale (counts) which covers the range $\pm$ $3\sigma$ , where $\sigma$ is the mean rms of the sky background. Thus, darkest regions are the most luminous regions (mainly the starburst) which have been saturated to enhance residual features in the outer fitted regions, e.g. the host galaxy region. In all cases, horizontal and vertical axis are in pixels whereas the orientation is north (up) - east ( left).

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$\begin{figure}\includegraphics[width=17.5cm,angle=0]{9591f14f.eps}\\ [7pt] \inc... ...7pt] \includegraphics[width=17.5cm,angle=0]{9591f14i.eps}\\ [7pt]\end{figure}$	Figure 10: continued.
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$\begin{figure}\includegraphics[width=17.5cm,angle=0]{9591f14j.eps}\\ [7pt] \inc... ...pt] \includegraphics[width=17.5cm,angle=0]{9591f14m.eps}\\ [7pt]\end{figure}$	Figure 10: continued.
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$\begin{figure}\includegraphics[width=17.5cm,angle=0]{9591f14b.eps}\\ [7pt] \inc... ...pt] \includegraphics[width=17.5cm,angle=0]{9591f14p.eps}\\ [7pt]\end{figure}$	Figure 10: continued.
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$\begin{figure}\includegraphics[width=17.5cm,angle=0]{9591f14q.eps}\\ [7pt] \inc... ...pt] \includegraphics[width=17.5cm,angle=0]{9591f14t.eps}\\ [7pt]\end{figure}$	Figure 10: continued.
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$\begin{figure}\includegraphics[width=17.5cm,angle=0]{9591f15a.eps}\\ [7pt] \inc... ...pt] \includegraphics[width=17.5cm,angle=0]{9591f15d.eps}\\ [7pt]\end{figure}$	Figure 11: Atlas of galaxy images II: Galaxies with Q=2. Broad-band galaxy images ( left), the best 2D Sérsic model ( centre) and the residual image ( right) of the 8 galaxies fitted with quality index Q=2 in the full sample of 28 BCGs. The description is the same as in Fig. 10.
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$\begin{figure}\includegraphics[width=17.5cm,angle=0]{9591f15e.eps}\\ [7pt] \inc... ...pt] \includegraphics[width=17.5cm,angle=0]{9591f15h.eps}\\ [7pt]\end{figure}$	Figure 11: continued.
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