Fig. 1.
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Postage stamp DECaLS colour composite images, centred on the quasar. The SDSS fibre, with a radius of 1.5″, is indicated by dashed circles, while the cyan-coloured aperture highlights the MgII host galaxy. The second column exhibits the multi-band SED fit at the absorber redshift. Columns three and four show the detected [O II] λλ3727,3729 and [O III] λ5008 nebular emission line from the Mg II absorber host, respectively.
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