Galactic Plane HI Surveys, Real and Imagined

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• Kevin Douglas (University of Exeter)
• Tuesday 24 November 2009, 16:30-17:30
• Martin Ryle Seminar Room, Kavli Building.

If you have a question about this talk, please contact Sally Hales.

As the number of interstellar tracers continues to grow, the 21cm spectral line of neutral hydrogen (HI) remains one of the primary wide-scale delineators of galactic structure. I will briefly review the rebirth of galactic plane HI surveys that began in the mid-1990s, before an in-depth overview of more recent efforts to image the galactic HI distribution with the Arecibo L-band Feed Array, including the recently completed I-GALFA survey. Next I will describe a project undertaken at the University of Exeter which involves creating a “synthetic” galactic plane survey using computational simulations of a Milky-Way-type galaxy. I will close with an overview of the planned galactic HI (and OH) projects that will comprise GASKAP , a Survey Science Project to be carried out with the Australia Square Kilometre Array Pathfinder.

This talk is part of the Cavendish Astrophysics Seminars series.

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