VLBI OH maser polarimetry with the Australian Long Baseline Array: the star-forming region G340.054–0.244

Until recently, high spatial resolution full Stokes maser polarimetry was the sole domain of northern interferometers and a wealth of sources in the far south remained unexplored due to a lack of suitable instrumentation having both high spatial and high velocity resolution. The Australia Telescope...

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Bibliographic Details
Published inProceedings of the International Astronomical Union Vol. 3; no. S242; pp. 64 - 65
Main Authors Bains, I., Caswell, J., Richards, A. M. S., Phillips, C., Tingay, S., Kramer, B. Hutawarakorn, Cohen, R. J., Cunningham, M.
Format Journal Article
LanguageEnglish
Published Cambridge, UK Cambridge University Press 01.03.2007
Subjects
Astronomy
Contributed Papers
Australia
stars: formation
radio lines: ISM
ISM: molecules
techniques: interferometers
techniques: high angular resolution
polarization
masers
ISM: individual (G340.054–0.244)
ISM: magnetic fields
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Summary:Until recently, high spatial resolution full Stokes maser polarimetry was the sole domain of northern interferometers and a wealth of sources in the far south remained unexplored due to a lack of suitable instrumentation having both high spatial and high velocity resolution. The Australia Telescope Long Baseline Array (LBA) has now switched to disk-based software correlation, permitting full Stokes observing in spectral line mode with velocity channels which are sufficiently narrow to sample usefully the polarization structure. To illustrate the utility of this valuable addition to radio astronomy, we present preliminary results of the first such polarimetric observation, the subject of which are the OH masers in the star-forming region G340.054–0.244.
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ISSN:1743-9213
1743-9221
DOI:10.1017/S1743921307012574