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Fig. 5
Lyα equivalent width as a function of metallicity. The oxygen abundance is derived from the N2 index log([Nii]λ6583/Hα) using the equation of Pettini & Pagel (2004). The present sample is shown with black circles, Cowie et al. (2011) galaxies with magenta circles, and IUE galaxies with blue triangles.
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