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Fig. 5.
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Hα images with overlaid contours of the X-ray emission from Chandra. The contour levels are at 3σ (black), 7σ (black), 15σ (black), 25σ (dark purple), 40σ (purple), 60σ (light purple), 80σ (red), 100σ (orange), and 150σ (yellow).
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