Fig. 2
Composite image of the NW PDR of NGC 7023. The three-color image combines the PACS 70 μm (red), PAH emission at 6.2 μm (green, image courtesy of O. Berné), and MIPS 24 μm (blue) images. The white cross indicates the position of the star HD 200775, while the black crosses indicate the reference extension of the NW PDR (at 45′′ and 60′′ away from the star).
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