Individual rest-frame VUDS spectra of the nine z_spec members of the z ~ 4.57 proto-structure detected in COSMOS with secure spectroscopic redshifts (see Sect. 2.1.1 for the meaning of this phrase). The spectra were smoothed with a Gaussian filter of σ = 1.5 pixels (~1.5 Å in the rest-frame). The ID of each member galaxy along with its spectroscopic redshift, redshift quality flag, and observed i⁺ magnitude are shown on the upper left hand corner of each panel. The typical flux density uncertainty as estimated by the NMAD scatter of each spectrum over the wavelengths plotted here is 1.5 × 10⁻¹⁹ ergs s⁻¹ cm⁻² Å⁻¹. Colored dotted lines indicate important spectral features. We highlight that in many cases the Lyα emission feature is absent or an identical redshift would have been recovered even in its absence.