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Fig. 3
Phase function of a large dust grain (2.5 μm, red line), an intermediate dust grain (0.25 μm, gray line), and a small dust grain (0.08 μm, blue line) at 0.6 μm. The green area marks the range of observed angles for HD 100546, between 34° and 126°. θ = 0° refers to forward scattering, and θ = 180° to backward scattering.
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