Diffuse Ionized Gas in the Magellanic System: Early Results from WHAM-South

Type Conference Paper
Names L. Matthew Haffner, G. J. Madsen
Proceedings Title Bulletin of the American Astronomical Society
Conference Name American Astronomical Society, AAS Meeting #217, #251.05
Volume 43
Date January 1, 2011
Short Title Diffuse Ionized Gas in the Magellanic System
URL http://adsabs.harvard.edu/abs/2011AAS...21725105H
Library Catalog NASA ADS
Abstract From its new vantage point at CTIO, the Wisconsin Ha Mapper is poised to explore the full distribution and kinematics of diffuse plasma in extended gaseous structures near the Magellanic Clouds. Shaped by the interaction between the Clouds and the Milky Way, the Bridge, Stream, and Leading Arm gas complexes have been studied extensively in 21 cm emission and optical/UV absorption. With spectral resolution of 12 km/s, WHAM is able to separate optical emission from these structures and brighter local gas near vLSR 0 km/s. Combined with its unprecedented sensitivity to the limit of atmospheric line confusion ( 10s of mR), we are embarking on a survey of the ionized component of the Magellanic System with WHAM. With observations of the southern component of our all-sky survey nearly completed, we have begun to examine some emission features toward the Magellanic System. Here we present a sample of several regions observed recently with WHAM in Ha. WHAM was built and continues to operate with ongoing support from NSF. The research presented here is currently funded by award AST-0607512 and an International Program Development Fund from the University of Sydney.
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