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Fig. 7

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Observed SEDs of Betelgeuse compared with the RADMC3D modelling. Left: spectral energy distribution from ISO-SWS01 taken pre-dimming (1997 October 08, see Sect. 2 for details) shown in blue and MATISSE shown in black (error bars shown in grey). Right: comparison of RADMC3D dust shell models, one with a clump positioned in front of the star and one without.

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