NGC 584 (E4) radial profiles. Top left panel: observed surface brightness profiles, Σ_IR, for PACS, MIPS, SPIRE, and IRAC 3.6 μm shown in log-log space. Symbols distinguish the different wavelengths for radial bins ≤100′′. The vertical dashed lines illustrate R_opt and 1.5 R_opt. The solid curves give the radial profiles at 3.6 μm, 24 μm, 70 μm, and 160 μm from Muñoz-Mateos (priv. comm.) which were not convolved to the MIPS 160 μm resolution as are the profiles presented here. Top right panel: MBBV radial temperature trends T_dust and emissivity index trends β vs. normalized radii, R/R_opt. Sets of fluxes to fit are defined over ≥4 wavelengths. The bottom panels show each MBBV SED fit as a (red) solid line, Σ_IR vs. wavelength, with best-fit temperature and emissivity index β. Herschel data are shown as open circles and (red) squares with squares corresponding to the calibration corrections inferred from the MBB fits; MIPS data are shown as ×. As discussed in the text, neither the 70 μm nor the 500 μm data points are included in the MBB fits. Also shown are the best-fit DL07 models as a (blue) dashed line. values are given for both fits in the upper right corner of each plot.