To this end, the Hamiltonian, spectral densities and transition dipoles have been considered separately for the Chl-a and the Chl-c pool. Mainly, the Chl-a pigments contribute to the overall spectrum, including the main peak and the vibrational side-band as shown in Fig. . This finding can be explained based on the fact that Chl-c molecules have smaller transition dipole moments (and oscillatory strengths) compared to the Chl-a pigments and the low intensity of the high-frequency peaks in the spectral density as discussed earlier. Looking at these results, it is clear that here is no direct connection between the excitation energies of the Chl-c molecules within the FCP complex and the linear absorption spectrum. Thus, the experimental linear absorption spectra of FCPs should be carefully re-analyzed in view of our results, where the high-frequency vibrational side-band could stem from the vibrations of the Chl-a molecules and not from contributions from the Chl-c pigments.