Left panel: The average electronic absorption cross-section per carbon number of C₆₀ cage isomers obtained by a FWHM= 300 cm^–1 Lorentzian convolution. Right panel: The average absorbed spectral energy power by C₆₀ cages located at the surface a 20,000 K blackbody. These curves were obtained by multiplying the 20,000 K blackbody spectral irradiance shown in Figure A.1 and the average electronic absorption cross-section of C₆₀ cage isomers shown at the left panel.