Fig. 4.
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Region around the Hα emission line in the spectrum corresponding to the outlier data point. The observed wavelength (λobs) has been converted to the rest frame (λrest) using different redshift estimates: the blue curve uses z_spec, while the orange, green, and red curves correspond to z_spec16, z_spec50, and z_spec84, respectively. The vertical line marks λrest = 656.46 nm.
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