Spectral energy distribution for Cha-MMS1. The observed flux density values are shown as filled circles. The error bars are smaller than the data points in the figure. Ten best model fits are shown: the solid black line shows the best-fitting model, and the grey lines illustrate the subsequent nine best-fit models. The dashed line shows the SED of the stellar photosphere corresponding to the central source in the best-fitting model (in the absence of circumstellar material).