A recent near-direct SMC-LMC collision can explain the SMC's large line-of-sight depth, its dispersion-dominated stars, and its gas velocity gradient as radial outflow rather than rotation.
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A Galactic Transformation -- Understanding the SMC's Structural and Kinematic Disequilibrium
A recent near-direct SMC-LMC collision can explain the SMC's large line-of-sight depth, its dispersion-dominated stars, and its gas velocity gradient as radial outflow rather than rotation.