Abstract
Using optical and UV observations, the internal gas structure of Magellanic Clouds (MCs) was examined for clues to the recent evolution of the Magellanic System and further signs of this collision event. Results indicate that the intermediate velocity clouds (IVCs) have different origins. Thus, the 60-km/s IVC is clearly of Galactic origin. The 130-km/s IVC is probably also Galactic and is not directly associated with the MCs. The 170 km/s IVC is quite clearly associated with the LMC and seems to be the front of the LMC. The overall gas structure in the MCs indicates that there is a distance-velocity association except in two regions: one to the south-west of the SMC (and is enigmatic), and the other to the south of 30 Doradus and appears to be smoothly linked with the H I bridge, indicating that both features have a common overall cause such as the recent tidal collision. 89 refs.
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