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Fig. 3


Herschel far-infrared images of Fomalhaut. a) Observations, b) Model images, c) Absolute value of the residuals. The hatched circles indicate the spatial resolution. The color scale is linear rainbow to increase contrast at low surface brightness. The scale ranges from zero to maximum surface brightness (see Table 1) of the image in columns a) and b); In column c), the color scale is the same as in column a). North is up, east to the left.

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