Two-dimensional reduced spectra (top) and the one-dimensional extracted ones (bottom) for the two BCG components (ID: 1-A, 1-B). In the bottom panel, the ID number and the measured redshift for each spectrum is reported in the top left corner, and the corresponding best-fit LRG template is overlaid in blue. Because of the low signal-to-noise ratio of the data obtained for ID:1-B (whose spectrum is barely distinguishable in the top panel), its redshift value is only tentative. Both spectra have been smoothed with a 7 pixel boxcar filter.