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Fig. 9

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Dust emissivity index (purple dots) of the envelope of L1527 as a function of radial scales. The solid dots indicate the β computed fitting all available bands. The dashed orange line is the best model for the profile of β along scales, while the light orange lines are a subsample of the results of some chains of the fitting procedure. The black line shows the approximation in which β = αfit − 2, where α is the slope of the SED considering all available bands.

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