Fig. 3.
Relation between total oxygen abundance and the values obtained from HCM-TEFF for our sample of He II emitters assuming a black-body temperature: with T* (left) and with log U (right). Different symbols represent objects with (blue triangles) or without (orange circles) the WR bump. Filled symbols represent objects for which O/H was calculated using the [O III] λ4363 Å, while empty symbols represent objects for which O/H was not calculated using this line.
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