Spectra and best-fit models for the GS-14 main spectral features analyzed in this work. From left to right: O VI1032 Å, N V1240 Å, C II^* 1335 Å, and N IV] 1483,1486 Å. The red line is the SS99 best-fit model, the Gaussian best fit for the emission feature is plotted in blue, the yellow line represents the continuum in the Lyman forest region, and the green line shows the spectrum noise. In the second panel, the strong emission line at λ_obs ∼ 8000 Å is the Lyα line. For the complete VIMOS spectrum, see Fig. 2 in Grazian et al. (2020).