Fig. 1
The oxygen abundance gradient of NGC 4254 obtained with several metallicity calibrations: Kobulnicky & Kewley (2004) (magenta circles), Pilyugin & Thuan (2005) (yellow squares), Zaritsky et al. (1994) (cyan triangles), McGaugh (1991) (blue stars), Kewley & Dopita (2002) (empty squares), Tremonti et al. (2004) (green asterisks), and Pettini & Pagel (2004) (violet diamond).
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