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Fig. 3

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Three colour composite of the column density (red), dust temperature (blue) and 70 μm (green) images. The white circle indicates the location of the NGC 6611 cluster. The extent of the influence of the photo-dissociation region, created by the presence of the OB cluster, is clearly highlighted in green at the centre of the map. Limb-brightening effects occur here around column density peaks and on many low column density filaments around the OB cluster.

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