Far-UV Observations of a Thermal Interface in the Orion-Eridanus Superbubble

Details Far-UV Observations of a Thermal Interface in the Orion-Eridanus Superbubble Far-UV Observations of a Thermal Interface in the Orion-Eridanus Superbubble

2006-01-26

arxiv.org/abs/astro-ph/0601584v1

Astrophys.J. 644 (2006) L167-L170

Astronomy and Astrophysics

Astrophysics

4 pages, 4 figures Accepted to ApJLetters

Scientific paper

10.1086/505196

Diffuse far-UV emission arising from the edge of the Orion-Eridanus superbubble was observed with the SPEAR imaging spectrometer, revealing numerous emission lines arising from both atomic species and H2. Spatial variations in line intensities of CIV, SiII, and OVI, in comparison with soft X-ray, H-alpha and dust data, indicate that these ions are associated with processes at the interface between hot gas inside the bubble and the cooler ambient medium. Thus our observations probe physical conditions of an evolved thermal interface in the ISM.

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