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Fig. 3

image

Fe i (black solid dots) and Fe ii (red open triangles) abundances versus χex (eV) and EWp (mÅ) for star #5. Open circles stand for Fe i lines excluded from computation of the mean abundance using a σ clipping criterion. Temperature and microturbulence are estimated by eliminating the trend of Fe i abundance with respect to χex and EWp.

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