10″ × 10″ cut-outs of our z> 4 COSMOS SMGs. Shown are the HST/ACS I-band (rest-frame UV) or the stacked HST/WFC3 bands from CANDELS (PI: S. Faber; if available) overlaid with VLA 1.4 GHz radio continuum contours (levels: 2ⁱσ, where i = 1, 2, 3,..., and σ is the local rms), the Subaru V, r⁺ and z⁺ broad band filters as well as a stack of the NIR filters of the UltraVISTA survey (Y,J,H,K_s). Spitzer/IRAC 3.6 μm and MIPS 24 μm contours (starting at 3σ, in steps of 3σ) are overlaid onto each z⁺ and UltraVISTA image, respectively. Spectroscopic redshifts based on Lyα diagnostics from Keck/DEIMOS observations targeting sources indicated by the large black cross are given in the top left corner of the leftmost panels.