Fig. A.1.
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eROSITA RGB image of the surroundings of Wd 1. Red, green, and blue colors correspond to 0.7 to 1.1keV, 1.1 to 2.3keV, and 2.3 to 10keV, respectively. The image was smoothed using a Gaussian kernel with standard deviation 10 arcsec. The large annulus indicates the background region for the Wd 1 spectral fit, from which the white circle around Wd 1 itself was excluded.
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