Top left: CMD of the main spiral body (NGC 3447). Overlaid are example stellar sequences drawn using the ArtPop software package (J. P. Greco & S. Danieli 2022). The main spiral body shows clear signs of a broad age of stellar populations, from young main-sequence stars to old red giants. Top right: CMD of the selected tidal dwarf region. Unlike the main body, the stellar population here is dominated by young main-sequence and intermediate-age blue and red helium-burning stars (∼100 Myr). The few red giants are likely interlopers from the halo of the main spiral and the separate dwarf found in projection to the system. Bottom panels: example color-image cutouts drawn from the main body and the tidal dwarf, showing the clear visible differences in stellar populations—the tidal dwarf region lacks the background, old stellar population that can be seen in the disk of the main galaxy.