How the power spectrum of dust continuum images may hide the presence of a characteristic filament width

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Fig. 10.

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Comparison of the power spectrum of the Herschel/SPIRE 250 μm image of Fig. 9a (black solid curve) with that of the synthetic image of Fig. 9b (red curve). Note the absence of any significant feature around k ∼ k_fil (vertical dashed line) in both power spectra.

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