HST/WFC3 images of NGC 4751 used to derive the galaxy luminosity profile; the galaxy nucleus is indicated with a black cross. Left: Original image from the F160W filter. Center: J′−H′ color map (see text) made by subtracting the F110W (J′) image from the F160W (H′) one; higher values trace regions with more dust. Right: F160W image as in the left panel, but now corrected for dust extinction (see Sect. 3.5).