Components of the three galaxies on the star-forming main-sequence: star-bursting bulges and quiescent disks. The SFR vs. stellar-mass values of the star-bursting core, the quiescent stellar disk and the combination of the two placed with respect to the star-forming main-sequence (Schreiber et al. 2015) at z = 3, shown as the black solid line. The shaded region demarcates the 0.3 dex uncertainty in the relation. We use the 3σ ALMA upper-limits as the value for SFR with the associated gray error-bars showing the range allowed by our SED model fitting. The latter have been artificially offset in the x-axis to emphasize the difference in the method of measurement.