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With the wavelength coverage, sensitivity, and high spatial resolution ofJWST, it is now possible to peer through the dust attenuation to probe therest-frame near infrared (NIR) and stellar structures of extremely dustygalaxies at cosmic noon (z~1-3). In this paper we leverage the combined ALMAand JWST/HST coverage in Abell 2744 to study the multiwavelength (0.5-4.4um)structures of 11 sub-millimeter (sub-mm) detected galaxies at z~0.9-3.5 thatare fainter than bright "classical" sub-mm galaxies (SMGs). While these objectsreveal a diversity of structures and sizes, all exhibit decreasing sizes andincreasing central concentration towards longer wavelengths. The smaller sizesof these objects at long wavelengths indicate that their stellar mass profilesare more compact than their optical light profiles, likely due tocentrally-concentrated dust obscuration. Further, we find that galaxies withhigher central concentration values tend to have more extreme size ratios(comparing the rest-frame NIR to rest-frame optical); this suggests that thegalaxies with the most compact light distributions also have the mostconcentrated dust distributions. We also find the galaxies with the mostextreme size ratios do not have elevated 1.2mm flux densities compared to therest of our sample: we argue this means compact dust geometry, rather than e.g.high total dust quantity, drives the most extreme observed rest-frameNIR-to-optical size ratios. Upcoming higher resolution 1.2mm ALMA imaging willfacilitate joint spatially-resolved analysis and will directly test the dustdistributions within this representative sub-mm population.

UNCOVER: The rest ultraviolet to near infrared multiwavelength structures and dust distributions of sub-millimeter-detected galaxies in Abell 2744