The Origin of Large-scale HI structures in the Magellanic Bridge

Details The Origin of Large-scale HI structures in the Magellanic Bridge The Origin of Large-scale HI structures in the Magellanic Bridge

2007-06-25

arxiv.org/abs/0706.3544v2

Astronomy and Astrophysics

Astrophysics

5 Pages, 4 Figures, Accepted - MNRAS lett

Scientific paper

10.1111/j.1745-3933.2007.00356.x

We investigate the formation of a number of key large-scale HI features in the ISM of the Magellanic Bridge using dissipationless numerical simulation techniques. This study comprises the first direct comparison between detailed HI maps of the Bridge and numerical simulations. We confirm that the SMC forms two tidal filaments: a near arm, which forms the connection between the SMC and LMC, and a counterarm. We show that the HI of the most dense part of the Bridge can become arranged into a bimodal configuration, and that the formation of a "loop" of HI, located off the North-Eastern edge of the SMC can be reproduced simply as a projection of the counter-arm, and without invoking localised energy-deposition processes such as SNe or stellar winds.

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