Far-Ultraviolet Observations of The Loop I/North Polar Region

Details Far-Ultraviolet Observations of The Loop I/North Polar Region Far-Ultraviolet Observations of The Loop I/North Polar Region

Jul 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...21012305p&link_type=abstract

American Astronomical Society Meeting 210, #123.05; Bulletin of the American Astronomical Society, Vol. 39, p.332

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Scientific paper

The results of diffuse far-ultraviolet (FUV) observations of the Loop I/North Polar Spur (NPS) region are presented in this paper. Several important ionic emission lines including C IV, Si II, Si IV, and Al II were detected. Fluorescent emission lines from hydrogen molecules were also seen in the spectra. A spectral image made using the C IV emission shows a shell-like feature collocated with the X-ray NPS. This is located just inside the Loop I radio ridges. It is shown that the prominent part of the "C IV NPS” feature is in good agreement with a supernova explosion in the tenuous medium produced by the stellar winds in the Scorpio-Centaurus association. Another interesting C IV feature is seen at the inner edge of the "interaction ring", where the cold interstellar medium is in direct contact with the X-ray bright hot gas. These results confirm that the hot gas inside Loop I is being cooled at its inner boundaries.

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