Σ_SFR vs. from aperture photometry centered at 1.1 mm peaks (a) and 22 μm peaks (b) for image resolutions of 10′, 15′, and 20′. The solid black line in each plot represents a robust linear fit to the data, and the dotted gray line represents a least-square fit. The dashed red line represents the extragalactic relation from Kennicutt (1998), and the dot-dashed blue line is the dense gas relation from Wu et al. (2005).