Model fits to the ejecta SED observed in 9.25′′  ×  9.25′′ FOV nucleus-centered extractions. The different colors correspond to different size distributions and composition materials. Green: power law distribution and amorphous carbon. Cyan: power law distribution and two-layer grains. Blue (dash-dotted line): Hanner distribution and amorphous carbon grains. Purple (dash-dotted line): Hanner distribution and two-layer grains. We explicitly model the continuum emission only, ignoring the contribution from small cyrstalline silicates. The cyan and purple curves overlap at times TI + 0.67 h, TI + 1.83 h, TI + 3.6 h, TI + 4.2 h and TI + 10.2 h. The blue and green curves overlap in all plots.