AAS 199th meeting, Washington, DC, January 2002
Session 91. Stellar Populations and Galactic Structure
Display, Wednesday, January 9, 2002, 9:20am-6:30pm, Exhibit Hall

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[91.07] Magellanic Stream probes density of the Galactic Halo

M. Krco (Colgate University), S. Stanimirovic (Arecibo Obs.), J. Dickey (Minnesota University)

The Magellanic Stream consists of discrete clumps of gas stretching from the Magellanic System towards our own galaxy. This gas consists primarily of neutral Hydrogen and is thought to have originated from the Large and Small Magellanic Clouds as a result of, most likely, tidal interactions with the Milky Way. The 21-cm observations of two regions in the Stream were carried out at Arecibo Observatory in summers of 2000 and 2001, enabling, up-to-date, the most detailed images of these regions. These maps reveal the small-scale morphology of the Stream and allow us to probe the density of the Galactic Halo. Assuming that the clumps within the Stream are pressure confined by the hot Halo gas, estimated properties of the Stream gas place limits on the Halo density.

The author(s) of this abstract have provided an email address for comments about the abstract: mkrco@mail.colgate.edu

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