Fig. 8.
Decomposition of rest-frame Ly-α region. The observed on-trace X-shooter spectrum is shown in black with uncertainties as grey error bars. The reconstructed unabsorbed quasar emission line is shown as the dashed purple curve. The red curve is the combination of this unabsorbed emission together with the modelled DLA absorption profile with log N(H I) = 20.71. Subtracting the absorption profile from the intrinsic emission profile provides us with the residual emission shown in blue, over the 4400−4440 Å wavelength interval. The BOSS fibre spectrum is shown in green.
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