Spectral energy distribution of VLA 1623 including the Spitzer IRS spectra. The red curves show the best fit graybody to each SED. The dust temperature T_dust and dust emissivity index ² are indicated in each panel. For VLA 1623 A (top) and B (middle), the dashed curves show the best fit assuming that the emission at λ < 450 µm is evenly distributed among the two sources. The dotted curve assumes VLA 1623 B only contributes one-tenth of the total emission for λ < 450 µm. The open symbols in the top and middle panel are the fluxes for VLA 1623 B and VLA 1623 A, respectively, and are included for ease of comparison.