Fig. 9
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Polarisation fraction as a function of scattering angle for the LkCa 15 disc. Red points: SPHERE Ks-band data (debiased). Blue: CAHP-128-100 nm high-porosity aggregate model. Dashed black: Rayleigh limit. The broad, sub-Rayleigh peak indicates that scattering is dominated by porous aggregate grains rather than compact Mie spheres.
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