2D contour plot of the surface brightness of the best-matching model using a generic M/L of unity. Top panel: innermost square-degree shown with a resolution of 144 arcsec per pixel. Compare with Fig. 1. Bottom panel: 50 × 50 degrees showing the extend of the tidal tails along the orbit. The resolution is 0.5 degree. It is important to note that yellow to red contours in this panel have surface brightnesses below any normal observational detection limit.