SEDs of the case of the overabundance of small grains depending on the dust composition (ice inclusion 𝓕_ice = 0.5 and porosity 𝒫 = 0.5). Solid and dashed lines indicate the modeled SED of the dust reemission for the two different disk structures (thin belts and broad disks). The dotted lines represent the direct stellar radiation from the A star. The top-left plot shows the result based on the single power law grain size distribution (OS1+UM1+SL1), while the other three plots exhibit the results based on the broken power law grain size distribution, specifically the underabundance of medium grains with the different scaling factors, 10, 50, and 100 (i.e., UM10, UM50, and UM100). See Sect. 3.2 and Table 7 for details.