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Fig. 2.
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Robust detection of the [O III] λ5007 emission line in the R ∼ 1000 G395M grating spectrum, which was used to derive an accurate systemic redshift of z = 7.2782 ± 0.0003. This redshift is consistent with the weaker detections of the [O III] λ4959 and Hβ lines that are also marked in the spectrum.
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