The scattered debris of the Magellanic Stream

Details The scattered debris of the Magellanic Stream The scattered debris of the Magellanic Stream

2008-05-07

arxiv.org/abs/0805.0820v1

Astronomy and Astrophysics

Astrophysics

5 pages, 4 figures, accepted for publication in MNRAS

Scientific paper

10.1111/j.1745-3933.2008.00493.x

Searching the HI Parkes All-Sky Survey (HIPASS) and its northern extension, we detected a population of very compact high-velocity clouds (HVCs) with similar velocities in the Galactic standard-of-rest frame which appear to be arranged in several filaments aligned with the nearby Magellanic Stream. A comparison with published OVI/CaII absorption and HI emission line measurements suggests that the HVCs are condensations within an extended and mainly ionised component of the Magellanic Stream. They coincide in position with a faint gas stream predicted in numerical simulations of the Magellanic Clouds by Gardiner & Noguchi (1996). Consequently, the Magellanic Stream could be much more extended than generally believed.

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