Magellanic Stream probes density of the Galactic Halo

Details Magellanic Stream probes density of the Galactic Halo Magellanic Stream probes density of the Galactic Halo

Dec 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aas...199.9107k&link_type=abstract

American Astronomical Society, 199th AAS Meeting, #91.07; Bulletin of the American Astronomical Society, Vol. 33, p.1438

Astronomy and Astrophysics

Astronomy

Scientific paper

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.

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