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Fig. 1.
Optical Keck/DEIMOS spectrum of ID22914, the target of our study. Bottom panel: 1σ error spectrum. Red squares indicate the i-, z-, and Y-band photometry. Limits refer to a 3σ significance. The spectrum shows a blue continuum with a break around wavelength ∼8850 Å, implying a Lyα redshift of z ≈ 6.3.
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