Fig. 8.
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Upper panels: Optical counterparts of ULXs X-6 and X-7 in NGC 4631 (upper panels). The solid yellow circles have a radius of 0.5″. The small green circles represent the candidate counterparts. Bottom panels: Position of the optical counterpart (green circle) of ULX-3 on HST (left) and JWST (right) images. The solid yellow circles show the astrometric error radius of 0.45″.
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