Spectra of the disk radiative transfer model as observed under different disk inclinations, for different considered models for the ice and core composition, and dust size distribution. Distributions corresponding to, from top left to lower right: silicates core, M50 ice mantle composition and size distribution τ₃, a_max = 3 µm (model #13); silicates and amorphous carbon core, M15 ice composition and size distribution τ₃, a_max = 3 µm (model #16); silicates core, M15 ice mantle composition, including pure CO and size distribution τ₃, a_max = 3 µm (model #19); silicates core, MX ice mantle composition and size distribution τ₃, a_max = 3 µm (model #22).