Fig. 1
Example of the spectra obtained with GTC/OSIRIS (left panel) and TNG/DOLORES (right panel) for two luminous galaxy members, with magnitudes r′ = 21.6 and 17.8, in the clusters G032.76+42.33 and G341.69+50.66, at z = 0.843 and 0.291, respectively. Dashed lines correspond to the wavelength of the absorption features identified in each spectrum at the redshift of the clusters. Flux density is plotted in arbitrary units.
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