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Fig. 4.

image

Upper: parametrisation of the CIV emission line of the SUPER AGN J1333+1649. The red curve shows the best fit to the data and the gold curves indicate the multiple Gaussian model used to reproduce the CIV line profile. The red line indicates the expected wavelength of the CIVλ1549 based on [OIII] systemic redshift. Bottom: parametrisation of the MgII emission line. The red curve shows the best fit to the data and the gold curve the Gaussian component used to reproduce the MgII line profile. The magenta curve represents the best-fit model of the UV FeII emission. The red line indicates the expected wavelength of the MgIIλ2800 based on [OIII] systemic redshift. Grey bands represent the absorption and sky-line features masked during the fitting procedure. The x- and y-axes show the rest-frame wavelength and flux (not corrected for extinction) according to the redshift of the target.

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