Spectral energy distribution of GG Tau A disk model. Each energy distribution considers a different combination of the circumstellar disks, but always takes the emission of the circumbinary disk as well as the emission from all three stars into account (see Table 2). For comparison purposes with the observations, the foreground reddening was applied to the simulated spectral energy distributions (A_V = 0.3, Hartigan & Kenyon 2003). The black dots are photometric measurements obtained from the VizieR catalog service (see Appendix A).