AR_final file_2018-19

8 9 10 11 12 13 λ(μm) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 P λ /P max Model parameters: Composition: SiCSi AR = 2.0 Radius = 0.5 Vol Frac = 0.3 Observed Star MWC 1080A DDA Model Best fit 8 9 10 11 12 13 λ(μm) 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 P λ /P max Model parameters: Composition: SiCSi AR = 2.0 Radius = 0.5 Vol Frac = 0.3 Observed Star MWC 1080A EMA Model Best fit Figure 16: Composite grain models: DDA (left panel) and EMA (right panel) models with various combinations showing best fits to observed star MWC 1080A. 8 9 10 11 12 13 λ(μm) 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 P λ /P max Model parameters: Composition: SiGr AR = 2.0 Radius = 0.5 Vol Frac = 0.3 0 % polarization Observed Star MWC 297 DDA Model Best fit 8 9 10 11 12 13 λ(μm) 0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 P λ /P max Model parameters: Composition: SiGr AR = 1.33 Radius = 0.5 Vol Frac = 0.3 0 % polarization Observed Star MWC 297 EMA Model Best fit Figure 17: Composite grain models: DDA (left panel) and EMA (right panel) models with various combinations showing best fits to observed star MWC 297. ( 84 )