Fit of a spectrum of NGC 4486A. The top panel shows the observed (in black) and fitted (blue) spectra. The red points mark the excluded regions (because of strong telluric absorption) and the rejected pixels (kappa-sigma clipping). The two gaps between the detectors are visible near 4800 and 5750 Å. The middle panel shows the two components of the model separately, the galactic population in black, and the star in orange. The bottom panel presents the residuals (observation-model). The green lines are the 1-σ errors.