Bland-Hawthorn, Joss; Sutherland, Ralph; Agertz, Oscar; Moore, Ben
Since its discovery in 1996, the source of the bright Ha emission (up to 750 mR) along the Magellanic Stream has remained a mystery. There is no evidence of ionizing stars within the H I stream, and the extended hot halo is far too tenuous to drive strong shocks into the clouds. We now present a hydrodynamical model that explains the known properties of the Ha emission and provides new insights on the lifetime of the Stream clouds. The upstream clouds are gradually disrupted due to their...[Show more]
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