Oxygen gas abundance and stellar metallicities relative to solar as a function of the logarithm of galactocentric radius in arcsec. R = 0 is shifted to log R = −0.5. Asterisks indicate metallicities relative to solar obtained from the stellar population (see text for details). Open squares indicate oxygen gas abundances using R23 for run2 galaxies, and error bars cover values obtained with all methods but O2Ne3. Fon run1 galaxies, open squares indicate those obtained with O3N2, diamonds with N2, and triangles with SB1. Galaxies hosting AGN are marked, with the vertical lines indicating the region affected by the active nuclei (either as in Fig. 7 or 3′′, as indicated in references in Véron-Cetty & Véron (2006)).
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© ESO, 2012