GTC spectra shown together with the photometry from SDSS, UKIDSS, and WISE in the u,g,r,i,z,Y,JH,Ks, and W1 bands (Warren et al. 2007; Wright et al. 2010; Eisenstein et al. 2011). We also overplot a composite quasar spectrum and a reddened composite as described in the text. The shaded area shows the effect of the 2175-Å extinction bump from dust in the z = 2.027 DLA galaxy. In the inset we plot a zoom on the blue part of the spectrum where we show the 2500U spectrum covering the region around the hydrogen Lyα line of the z = 2.027 absorber. Overplotted is the DLA fit assuming a column density of 1021.5±0.3 cm-2; the ±1σ curves are shown with dashed lines.
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