Fig. 9.
Ly-α emission in PDLA core before (left) and after (right) subtraction of the unresolved quasar continuum emission. From top to bottom: PAs = −155, −164 and +177 deg. Top-right panel: spectral profile of the extended Ly-α emission for each position angle as well as their average, collapsing over the full spatial range shown in the 2D panels (hence an aperture of 6 × 1 arcsec). The SDSS-III/BOSS spectrum is shown in green. The small side panels show the spatial profiles of the unresolved quasar continuum emission (red) and the extended Ly-α emission (black).
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