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Fig. 11.
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Optical image of NGC 3842 and surroundings from the DESI Legacy Survey DR 10 (Dey et al. 2019). Overlaid in red are the LOFAR HBA contours, taken from an image with a PSF of 6″ × 4″. The contours are [4, 8, 16, 32, 64]×σrms, where σrms = 77 μJy beam−1.
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