Analysis of the surface brightness profiles for FS90 110. Left panels: upper panel presents the surface brightness profiles for FS90 110 in the B (blue circles) and I (red squares) filters. The solid and dashed curves represent the fit of single Sérsic laws. The lower panel illustrates the residuals from these fits for each filter. Right panels: surface brightness profiles for FS90 110 are fitted with three different components, each represented by a Sérsic law. The thin curves depict the individual components, while the thick ones represent their sum. The lower panel displays the residuals from the three-component fit for each filter.