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Fig. 1.

image

Three-color image of IC 10 (main body) with polycyclic aromatic hydrocarbon (PAH) emission (Spitzer/IRAC4, 8 μm) in red, H α (1.8 m Perkins Telescope; Hunter & Elmegreen 2004) in green, and stars (Spitzer/IRAC1, 3.6 μm) in blue. The tracers highlight the bright star-forming region in the center and two arcs with extended Hα and PAH emission.

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