Fig. 1
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HAWK-I image in the H2 filter. Panel a (left) is the raw scientific image. Panel b (middle) is the image after PSF subtraction, using contours to highlight brighter features. Panel c (right) is the raw scientific image, and the Herschel/PACS image is overlaid. The yellow arrow indicates the peculiar velocity of GX 301-2 as retrieved from the Gaia EDR3 parallax study. GX 301-2 is marked in all three images. The contour corresponds to a 2.124 µm surface brightness: 10 MJy sr−1.
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