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Fig. 1
SDSS spectra of the eight XMD candidates for which abundances were obtained by direct methods. Five galaxies (J0137+1810, J0141+2124, J0739+4434, J0945+3835, J1444+4237) have signal-to-noise ratios of 2σ<S/N< 3σ in the [O iii]λ4363 Å emission line.
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