All Figures

$\begin{figure} \par\includegraphics[width=15.8cm,clip]{8709fig1.ps} \end{figure}$ Figure 1: A fragment of the CFHT Megacam r'-band image, showing the central part of Abell 496. Galaxies from the spectroscopic sample are displayed with different symbols: (1) confirmed cluster members as diamonds with the colour indicating the presence of embedded structures: red, green, and blue for no, weak, and strong embedded structures respectively; (2) confirmed field galaxies as squares; (3) galaxies with unknown redshifts as triangles. The X-ray map obtained with XMM-Newton is shown as contours.
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{8709fig2.ps} \end{figure}$ Figure 2: Absolute B magnitude ( top panel) and effective radius ( bottom panel, cf. Kormendy relation) as a function of mean surface brightness within the effective radius. Giant and intermediate-luminosity ellipticals, power-law and core galaxies are shown in blue, bulges of disc galaxies in red, dwarf ellipticals and lenticulars in black. We keep the original morphological classification (E/dE) for the data points coming from the Virgo Cluster ACS Survey, and from Caon et al. (1993), and D'Onofrio et al. (1994). Therefore, they appear both in blue and black. Abell 496 galaxies are shown as filled blue circles with crosses.
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{8709fig3.ps} \end{figure}$ Figure 3: Faber-Jackson relation for ellipticals and bulges of disc galaxies. Abell 496 objects are shown as blue-filled circles. Giant and intermediate-luminosity ellipticals are in blue, bulges of disc galaxies in red, dwarf ellipticals and lenticulars in black. The upper end of the arrow representing M 32 corresponds to the HST STIS measurements (Joseph et al. 2001), and the filled circle represents the value obtained from earlier HST FOS data (van der Marel et al. 1998), which was in agreement with more recent ground-based observations.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{8709fig4.ps} \end{figure}$ Figure 4: Mgb - $\sigma _0$ ( top) and $\langle{\rm Fe}\rangle - \sigma_0$ ( bottom) relations. Only points having $\Delta ({\rm Mgb})<0.5$ Å are shown. SDSS galaxies with ages older than 3 Gyr are shown as light-blue dots. The black-solid line represents the correlation between Mgb and $\sigma _0$ found by Smith et al. (2006).
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{8709fig5.ps} \end{figure}$ Figure 5: $\langle{\rm Fe}\rangle$ vs. Mgb with sizes of symbols indicating the values of central velocity dispersions. Models from Thomas et al. (2003) for different values of [ $\alpha$ /Fe] enrichment are overplotted. Only points having $\Delta ({\rm Mgb})<0.5$ Å are shown.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{8709fig6.ps} \end{figure}$ Figure 6: Relations between central velocity dispersion and stellar population parameters: SSP-equivalent age ( top), metallicity ( middle), and a combination of these parameters free of the effect of the age-metallicity degeneracy ( bottom). The presence of embedded structures in the galaxies is indicated. Values for early-type galaxies from Sánchez-Blázquez et al. (2006a,b) and measurements for 848 SDSS galaxies are overplotted. Colours are the same as in Fig. 4.
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In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{8709fig7.ps} \end{figure}$ Figure 7: Age and [Mg/Fe] abundance ratios of galaxies as a function of projected distance to the cluster centre. Only galaxies having uncertainties on [Mg/Fe] determinations better than 0.1 dex are shown in the bottom panel. The remaining galaxies are shown in blue in the top panel.
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In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{8709fig8.ps} \end{figure}$ Figure 8: 1- $\sigma$ confidence levels of age and metallicity determinations for the Abell 496 galaxies. Objects in the three velocity dispersion bins are plotted using different colours: red for $\sigma < 30$ km s^-1, blue for $30 < \sigma < 60$ km s^-1, and black for $\sigma > 60$ km s^-1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a1a... ...f.ps} & \includegraphics[height=4.8cm]{8709a1g.ps}\\ \end{tabular} \end{figure}$ Figure A.1: ACO496J043306.97-131238.8 (G-01). a) CFHT Megacam r'-band image; b) result of unsharp masking; c-e) adaptively binned colour maps; f) spectrum (black) and $\pm$ $1\sigma$ flux uncertainties (red), best-fitting PEGASE.HR model (blue) and residuals of the fit; g) map of the $\chi ^2$ on a wide grid of age and metallicities. Rectangle on the a) panel shows the dimensions of unsharp masking and colour maps. Contours on b-e) correspond to the surface brightness in r', the outer contour is 25 mag arcsec^-2, the step is 1 mag arcsec^-2.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.15cm]{8709a2a... ...f.ps} & \includegraphics[height=4.8cm]{8709a2g.ps}\\ \end{tabular} \end{figure}$ Figure A.2: ACO496J043308.85-130235.6 (G-02). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a3a... ...f.ps} & \includegraphics[height=4.8cm]{8709a3g.ps}\\ \end{tabular} \end{figure}$ Figure A.3: ACO496J043312.08-130449.3 (G-03). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a4a... ...f.ps} & \includegraphics[height=4.8cm]{8709a4g.ps}\\ \end{tabular} \end{figure}$ Figure A.4: ACO496J043317.75-131536.6 (G-04). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a5a... ...f.ps} & \includegraphics[height=4.8cm]{8709a5g.ps}\\ \end{tabular} \end{figure}$ Figure A.5: ACO496J043318.95-131726.9 (G-05). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a6a... ...f.ps} & \includegraphics[height=4.8cm]{8709a6g.ps}\\ \end{tabular} \end{figure}$ Figure A.6: ACO496J043320.35-130314.9 (G-06). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a7a... ...f.ps} & \includegraphics[height=4.8cm]{8709a7g.ps}\\ \end{tabular} \end{figure}$ Figure A.7: ACO496J043321.37-130416.6 (G-07). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a8a... ...f.ps} & \includegraphics[height=4.8cm]{8709a8g.ps}\\ \end{tabular} \end{figure}$ Figure A.8: ACO496J043324.61-131111.9 (G-08). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a9a... ...f.ps} & \includegraphics[height=4.8cm]{8709a9g.ps}\\ \end{tabular} \end{figure}$ Figure A.9: ACO496J043324.91-131342.6 (G-09). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a10... ....ps} & \includegraphics[height=4.8cm]{8709a10g.ps}\\ \end{tabular} \end{figure}$ Figure A.10: ACO496J043325.10-130906.6 (G-10). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a11... ....ps} & \includegraphics[height=4.8cm]{8709a11g.ps}\\ \end{tabular} \end{figure}$ Figure A.11: ACO496J043325.40-131414.6 (G-11). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a12... ....ps} & \includegraphics[height=4.8cm]{8709a12g.ps}\\ \end{tabular} \end{figure}$ Figure A.12: ACO496J043325.54-130408.0 (G-12). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a13... ....ps} & \includegraphics[height=4.8cm]{8709a13g.ps}\\ \end{tabular} \end{figure}$ Figure A.13: ACO496J043326.49-131717.8 (G-13). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a14... ....ps} & \includegraphics[height=4.8cm]{8709a14g.ps}\\ \end{tabular} \end{figure}$ Figure A.14: ACO496J043329.79-130851.7 (G-14). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a15... ....ps} & \includegraphics[height=4.8cm]{8709a15g.ps}\\ \end{tabular} \end{figure}$ Figure A.15: ACO496J043331.48-131654.6 (G-15). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a16... ....ps} & \includegraphics[height=4.8cm]{8709a16g.ps}\\ \end{tabular} \end{figure}$ Figure A.16: ACO496J043332.07-131518.1 (G-16). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a17... ....ps} & \includegraphics[height=4.8cm]{8709a17g.ps}\\ \end{tabular} \end{figure}$ Figure A.17: ACO496J043333.17-131712.6 (G-17). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a18... ....ps} & \includegraphics[height=4.8cm]{8709a18g.ps}\\ \end{tabular} \end{figure}$ Figure A.18: ACO496J043333.53-131852.6 (G-18). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a19... ....ps} & \includegraphics[height=4.8cm]{8709a19g.ps}\\ \end{tabular} \end{figure}$ Figure A.19: ACO496J043334.54-131137.1 (G-19). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a20... ....ps} & \includegraphics[height=4.8cm]{8709a20g.ps}\\ \end{tabular} \end{figure}$ Figure A.20: ACO496J043337.35-131520.2 (G-20). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a21... ....ps} & \includegraphics[height=4.8cm]{8709a21g.ps}\\ \end{tabular} \end{figure}$ Figure A.21: ACO496J043338.22-131500.7 (G-21). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a22... ....ps} & \includegraphics[height=4.8cm]{8709a22g.ps}\\ \end{tabular} \end{figure}$ Figure A.22: ACO496J043339.07-131319.7 (G-22). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a23... ....ps} & \includegraphics[height=4.8cm]{8709a23g.ps}\\ \end{tabular} \end{figure}$ Figure A.23: ACO496J043339.72-131424.6 (G-23). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a24... ....ps} & \includegraphics[height=4.8cm]{8709a24g.ps}\\ \end{tabular} \end{figure}$ Figure A.24: ACO496J043341.69-131551.8 (G-24). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a25... ....ps} & \includegraphics[height=4.8cm]{8709a25g.ps}\\ \end{tabular} \end{figure}$ Figure A.25: ACO496J043342.10-131653.7 (G-25). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a26... ....ps} & \includegraphics[height=4.8cm]{8709a26g.ps}\\ \end{tabular} \end{figure}$ Figure A.26: ACO496J043342.13-131258.8 (G-26). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a27... ....ps} & \includegraphics[height=4.8cm]{8709a27g.ps}\\ \end{tabular} \end{figure}$ Figure A.27: ACO496J043342.83-130846.8 (G-27). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a28... ....ps} & \includegraphics[height=4.8cm]{8709a28g.ps}\\ \end{tabular} \end{figure}$ Figure A.28: ACO496J043343.04-130514.1 (G-28). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a29... ....ps} & \includegraphics[height=4.8cm]{8709a29g.ps}\\ \end{tabular} \end{figure}$ Figure A.29: ACO496J043343.04-125924.4 (G-29). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a30... ....ps} & \includegraphics[height=4.8cm]{8709a30g.ps}\\ \end{tabular} \end{figure}$ Figure A.30: ACO496J043345.67-130542.2 (G-30). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a31... ....ps} & \includegraphics[height=4.8cm]{8709a31g.ps}\\ \end{tabular} \end{figure}$ Figure A.31: ACO496J043346.71-131756.2 (G-31). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a32... ....ps} & \includegraphics[height=4.8cm]{8709a32g.ps}\\ \end{tabular} \end{figure}$ Figure A.32: ACO496J043348.59-130558.3 (G-32). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a33... ....ps} & \includegraphics[height=4.8cm]{8709a33g.ps}\\ \end{tabular} \end{figure}$ Figure A.33: ACO496J043349.08-130520.5 (G-33). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a34... ....ps} & \includegraphics[height=4.8cm]{8709a34g.ps}\\ \end{tabular} \end{figure}$ Figure A.34: ACO496J043350.17-125945.4 (G-34). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a35... ....ps} & \includegraphics[height=4.8cm]{8709a35g.ps}\\ \end{tabular} \end{figure}$ Figure A.35: ACO496J043351.54-131135.5 (G-35). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a36... ....ps} & \includegraphics[height=4.8cm]{8709a36g.ps}\\ \end{tabular} \end{figure}$ Figure A.36: ACO496J043352.77-131523.8 (G-36). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a37... ....ps} & \includegraphics[height=4.8cm]{8709a37g.ps}\\ \end{tabular} \end{figure}$ Figure A.37: ACO496J043355.55-131024.9 (G-37). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a38... ....ps} & \includegraphics[height=4.8cm]{8709a38g.ps}\\ \end{tabular} \end{figure}$ Figure A.38: ACO496J043356.18-125913.1 (G-38). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a39... ....ps} & \includegraphics[height=4.8cm]{8709a39g.ps}\\ \end{tabular} \end{figure}$ Figure A.39: ACO496J043359.03-130626.7 (G-39). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a40... ....ps} & \includegraphics[height=4.8cm]{8709a40g.ps}\\ \end{tabular} \end{figure}$ Figure A.40: ACO496J043401.57-131359.7 (G-40). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a41... ....ps} & \includegraphics[height=4.8cm]{8709a41g.ps}\\ \end{tabular} \end{figure}$ Figure A.41: ACO496J043403.19-131310.6 (G-41). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a42... ....ps} & \includegraphics[height=4.8cm]{8709a42g.ps}\\ \end{tabular} \end{figure}$ Figure A.42: ACO496J043408.50-131152.7 (G-42). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a43... ....ps} & \includegraphics[height=4.8cm]{8709a43g.ps}\\ \end{tabular} \end{figure}$ Figure A.43: ACO496J043410.60-130756.7 (G-43). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a44... ....ps} & \includegraphics[height=4.8cm]{8709a44g.ps}\\ \end{tabular} \end{figure}$ Figure A.44: ACO496J043413.00-131003.5 (G-44). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a45... ....ps} & \includegraphics[height=4.8cm]{8709a45g.ps}\\ \end{tabular} \end{figure}$ Figure A.45: ACO496J043413.08-131231.6 (G-45). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a46... ....ps} & \includegraphics[height=4.8cm]{8709a46g.ps}\\ \end{tabular} \end{figure}$ Figure A.46: ACO496J043415.37-130823.5 (G-46). The same as in Fig. A.1.
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a47... ...25cm]{8709a47e.ps}\\ (a) & (b) & (c) & (d) & (e) \\ \end{tabular} \end{figure}$ Figure A.47: ACO496J043411.72-131130.2 (G-A1). The same as panels a- e) in Fig. A.1
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In the text

$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a48... ...25cm]{8709a48e.ps}\\ (a) & (b) & (c) & (d) & (e) \\ \end{tabular} \end{figure}$ Figure A.48: ACO496J043414.54-131303.0 (G-A2). The same as panels a- e) in Fig. A.1.
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In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{8709b1.ps} \end{figure}$ Figure B.1: Residuals of the fitting for a late-type star, an object with a strong MgH (5208 Å) molecular band. The top panel presents the rest-frame spectrum of the star (black) and its best fitting PEGASE.HR template for n=15 (blue), the bottom panel displays the fitting residuals for the three different multiplicative polynomial continua ( n=3, 9, 15). The visual scale of the flux axis for the residuals is doubled compared to the top panel. The 1 $\sigma$ flux uncertainty is shown as black dotted lines. Both spectrum and residuals are smoothed using a boxcar window of 15 pixels.
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In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{8709b2.ps} \end{figure}$ Figure B.2: Stability of the estimations of the velocity dispersion ( bottom left), metallicity ( top right), and age ( bottom right) with respect to the multiplicative polynomial continuum order (n) for three galaxies with different stellar populations. $\chi ^2$ ( top left) is normalised by the value, corresponding to n = 20 for every object.
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In the text

$\begin{figure} \par\includegraphics[width=7.4cm,clip]{8709b3.ps} \end{figure}$ Figure B.3: Residuals of the fitting for G-24, an object with highly overabundant [ $\alpha$ /Fe]. The top panel presents the rest-frame spectrum of the galaxy. The bottom panel displays the fitting residuals for the three different multiplicative polynomial continua ( n=5, 10, 20). The visual scale of the flux axis for the residuals is increased by a factor 8 compared to the top panel. The 1 $\sigma$ flux uncertainty is shown as black dotted lines. Both spectrum and residuals are smoothed using a boxcar window of 15 pixels.
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In the text

$\begin{figure} \par\includegraphics[width=6.5cm,clip]{8709b4a.ps}\par\vspace*{2mm} \includegraphics[width=7cm,clip]{8709b4b.ps} \end{figure}$ Figure B.4: Comparison of SSP ages ( top panel) and combinations of age and metallicity, stable against the age-metallicity degeneracy ( bottom panel), obtained using Lick indices and spectral fitting. Black and red points correspond to the spectral fitting in the two following wavelength ranges respectively: 4100-5800 Å and 4800-5600 Å.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{8709b5.ps} \end{figure}$ Figure B.5: Difference of age ( top panel) and metallicity ( bottom panel) determinations from the spectral fitting and Lick indices against [Mg/Fe] abundance ratios. Black and red colours are the same as in Fig. B.4.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{8709fig4.ps} \end{figure}$	Figure 4: Mgb - $\sigma _0$ ( top) and $\langle{\rm Fe}\rangle - \sigma_0$ ( bottom) relations. Only points having $\Delta ({\rm Mgb})<0.5$ Å are shown. SDSS galaxies with ages older than 3 Gyr are shown as light-blue dots. The black-solid line represents the correlation between Mgb and $\sigma _0$ found by Smith et al. (2006).
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$\begin{figure} \par\includegraphics[width=7.5cm,clip]{8709fig5.ps} \end{figure}$	Figure 5: $\langle{\rm Fe}\rangle$ vs. Mgb with sizes of symbols indicating the values of central velocity dispersions. Models from Thomas et al. (2003) for different values of [ $\alpha$ /Fe] enrichment are overplotted. Only points having $\Delta ({\rm Mgb})<0.5$ Å are shown.
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$\begin{figure} \par\includegraphics[width=7.4cm,clip]{8709fig7.ps} \end{figure}$	Figure 7: Age and [Mg/Fe] abundance ratios of galaxies as a function of projected distance to the cluster centre. Only galaxies having uncertainties on [Mg/Fe] determinations better than 0.1 dex are shown in the bottom panel. The remaining galaxies are shown in blue in the top panel.
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$\begin{figure} \par\includegraphics[width=7.4cm,clip]{8709fig8.ps} \end{figure}$	Figure 8: 1- $\sigma$ confidence levels of age and metallicity determinations for the Abell 496 galaxies. Objects in the three velocity dispersion bins are plotted using different colours: red for $\sigma < 30$ km s^-1, blue for $30 < \sigma < 60$ km s^-1, and black for $\sigma > 60$ km s^-1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.15cm]{8709a2a... ...f.ps} & \includegraphics[height=4.8cm]{8709a2g.ps}\\ \end{tabular} \end{figure}$	Figure A.2: ACO496J043308.85-130235.6 (G-02). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a3a... ...f.ps} & \includegraphics[height=4.8cm]{8709a3g.ps}\\ \end{tabular} \end{figure}$	Figure A.3: ACO496J043312.08-130449.3 (G-03). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a4a... ...f.ps} & \includegraphics[height=4.8cm]{8709a4g.ps}\\ \end{tabular} \end{figure}$	Figure A.4: ACO496J043317.75-131536.6 (G-04). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a5a... ...f.ps} & \includegraphics[height=4.8cm]{8709a5g.ps}\\ \end{tabular} \end{figure}$	Figure A.5: ACO496J043318.95-131726.9 (G-05). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a6a... ...f.ps} & \includegraphics[height=4.8cm]{8709a6g.ps}\\ \end{tabular} \end{figure}$	Figure A.6: ACO496J043320.35-130314.9 (G-06). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a7a... ...f.ps} & \includegraphics[height=4.8cm]{8709a7g.ps}\\ \end{tabular} \end{figure}$	Figure A.7: ACO496J043321.37-130416.6 (G-07). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a8a... ...f.ps} & \includegraphics[height=4.8cm]{8709a8g.ps}\\ \end{tabular} \end{figure}$	Figure A.8: ACO496J043324.61-131111.9 (G-08). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a9a... ...f.ps} & \includegraphics[height=4.8cm]{8709a9g.ps}\\ \end{tabular} \end{figure}$	Figure A.9: ACO496J043324.91-131342.6 (G-09). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a10... ....ps} & \includegraphics[height=4.8cm]{8709a10g.ps}\\ \end{tabular} \end{figure}$	Figure A.10: ACO496J043325.10-130906.6 (G-10). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a11... ....ps} & \includegraphics[height=4.8cm]{8709a11g.ps}\\ \end{tabular} \end{figure}$	Figure A.11: ACO496J043325.40-131414.6 (G-11). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a12... ....ps} & \includegraphics[height=4.8cm]{8709a12g.ps}\\ \end{tabular} \end{figure}$	Figure A.12: ACO496J043325.54-130408.0 (G-12). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a13... ....ps} & \includegraphics[height=4.8cm]{8709a13g.ps}\\ \end{tabular} \end{figure}$	Figure A.13: ACO496J043326.49-131717.8 (G-13). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a14... ....ps} & \includegraphics[height=4.8cm]{8709a14g.ps}\\ \end{tabular} \end{figure}$	Figure A.14: ACO496J043329.79-130851.7 (G-14). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a15... ....ps} & \includegraphics[height=4.8cm]{8709a15g.ps}\\ \end{tabular} \end{figure}$	Figure A.15: ACO496J043331.48-131654.6 (G-15). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a16... ....ps} & \includegraphics[height=4.8cm]{8709a16g.ps}\\ \end{tabular} \end{figure}$	Figure A.16: ACO496J043332.07-131518.1 (G-16). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a17... ....ps} & \includegraphics[height=4.8cm]{8709a17g.ps}\\ \end{tabular} \end{figure}$	Figure A.17: ACO496J043333.17-131712.6 (G-17). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a18... ....ps} & \includegraphics[height=4.8cm]{8709a18g.ps}\\ \end{tabular} \end{figure}$	Figure A.18: ACO496J043333.53-131852.6 (G-18). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a19... ....ps} & \includegraphics[height=4.8cm]{8709a19g.ps}\\ \end{tabular} \end{figure}$	Figure A.19: ACO496J043334.54-131137.1 (G-19). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a20... ....ps} & \includegraphics[height=4.8cm]{8709a20g.ps}\\ \end{tabular} \end{figure}$	Figure A.20: ACO496J043337.35-131520.2 (G-20). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a21... ....ps} & \includegraphics[height=4.8cm]{8709a21g.ps}\\ \end{tabular} \end{figure}$	Figure A.21: ACO496J043338.22-131500.7 (G-21). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a22... ....ps} & \includegraphics[height=4.8cm]{8709a22g.ps}\\ \end{tabular} \end{figure}$	Figure A.22: ACO496J043339.07-131319.7 (G-22). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a23... ....ps} & \includegraphics[height=4.8cm]{8709a23g.ps}\\ \end{tabular} \end{figure}$	Figure A.23: ACO496J043339.72-131424.6 (G-23). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a24... ....ps} & \includegraphics[height=4.8cm]{8709a24g.ps}\\ \end{tabular} \end{figure}$	Figure A.24: ACO496J043341.69-131551.8 (G-24). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a25... ....ps} & \includegraphics[height=4.8cm]{8709a25g.ps}\\ \end{tabular} \end{figure}$	Figure A.25: ACO496J043342.10-131653.7 (G-25). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a26... ....ps} & \includegraphics[height=4.8cm]{8709a26g.ps}\\ \end{tabular} \end{figure}$	Figure A.26: ACO496J043342.13-131258.8 (G-26). The same as in Fig. A.1.
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$\begin{figure} \par\begin{tabular}{ccccc} \includegraphics[width=3.25cm]{8709a27... ....ps} & \includegraphics[height=4.8cm]{8709a27g.ps}\\ \end{tabular} \end{figure}$	Figure A.27: ACO496J043342.83-130846.8 (G-27). The same as in Fig. A.1.
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