Fig. 2
Left panel: NOT/ALFOSC 2D spectrum of qA, the dispersion is vertical with short wavelengths at the top. The DLA line is at the centre, the arrow points to faint extended Lyα emission.Right panel: same as left after SPSF subtraction. The full extent of the Lyα emission is now visible. It is seen to be tilted and shifted relative to the DLA. The vertical axis provides relative velocity (km s-1) in the rest frame of the DLA absorber.
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