Fig. 7.
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X-ray-to-optical flux ratios of several classes of X-ray emitters as a function of hardness ratio (see Kurpas et al. 2023, for details). The updated position of the target is denoted by the lower limit in black and is compared to those of the five XDINSs on the German eROSITA footprint (western hemisphere from the Galactic centre; magenta data points).
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