Spatially Resolved [C ii] Emission in SPT0346-52: A Hyper-starburst Galaxy Merger at z ∼ 5.7

U.S. National Science Foundation (NSF) [AST-1715213, AST-1312950]; National Radio Astronomy Observatory (NRAO) [SOSPA4-007]; NSF [AST-1716127, MRI-1228509]; National Science Foundation [PLR-1248097]; Kavli Foundation; Gordon and Betty Moore Foundation [GBMF 947]; Simons Foundation; [PHY1125897]