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Home All issues Volume 508 / No 2 (December III 2009) A&A, 508 2 (2009) 565-574 Full HTML
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Table 4:

Averages of Si, Fe, Ni abundances and Si/Fe, Ni/Fe ratios for the cool core cluster sample in solar units.
mekal model    
Metal mean scatter
Si $0.75\pm 0.03$ $0.22\pm 0.03$
Si no Cent. $0.72\pm 0.03$ $0.17\pm 0.02$
Fe $0.51\pm 0.02$ $0.11\pm 0.01$
Fe no Cent. $0.49\pm 0.01$ $0.07\pm 0.01$
Ni $1.28\pm 0.08$ $0.45\pm 0.06$
Ni no Cent. $1.18\pm 0.07$ $0.34\pm 0.06$
Si/Fe $1.47\pm 0.05$ $0.27\pm 0.05$
Si/Fe no Cent. $1.45\pm 0.05$ $0.30\pm 0.05$
Ni/Fe $2.41\pm 0.13$ $0.60\pm 0.12$
Ni/Fe no Cent. $2.40\pm 0.14$ $0.63\pm 0.13$
apec model    
Metal mean scatter
Si $0.83\pm 0.04$ $0.23\pm 0.03$
Si no Cent. $0.80\pm 0.03$ $0.19\pm 0.03$
Fe $0.53\pm 0.02$ $0.12\pm 0.01$
Fe no Cent. $0.51\pm 0.01$ $0.08\pm 0.01$
Ni $1.07\pm 0.10$ $0.53\pm 0.07$
Ni no Cent. $0.96\pm 0.08$ $0.39\pm 0.06$
Si/Fe $1.56\pm 0.05$ $0.25\pm 0.05$
Si/Fe no Cent. $1.56\pm 0.05$ $0.26\pm 0.05$
Ni/Fe $1.88\pm 0.14$ $0.67\pm 0.14$
Ni/Fe no Cent. $1.83\pm 0.15$ $0.67\pm 0.15$

Mean values are given both for the total sample and with the exclusion of the peculiar Centaurus cluster. Average abundance values and intrinsic scatters are computed with the maximum likelihood method described in Maccacaro et al. (1988).

Source LaTeX | All tables | In the text

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