Influence of the monomer shape for a-Sil_Fe,FeS (left panels), a-C (middle panels), and a-C:H (right panels) aggregates made of compact spheroidal monomers with a_V = 0.05 μm, aspect ratiosof 2, and N = 1, 2, 4, 6, 8, 10, 12, 14, and 16 monomers plotted in blue, pink, green, fuchsia, red, yellow, silver, brown, and orange, respectively. Solid lines show aggregates made of oblate monomers and dashed lines of prolate monomers. Top bottom panels: Q_abs (N, λ), Q_sca (N, λ), κ(N, λ), and the ratioof the latter to κ(N) for aggregates made of compact spherical monomers with radius a₀ = 0.05 μm.