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HI Emission and Absorption in the Southern Galactic Plane Survey


McClure-Griffiths, NM and Dickey, JM and Gaensler, BM and Green, AJ and Haynes, RF and Wieringa, MH, HI Emission and Absorption in the Southern Galactic Plane Survey, Publications of the Astronomical Society of Australia, 18, (1) pp. 84-90. ISSN 1323-3580 (2001) [Refereed Article]

DOI: doi:10.1071/AS01010


We present preliminary results from the Southern Galactic Plane Survey (SGPS) Test Region and Parkes data. As part of the pilot project for the Southern Galactic Plane Survey, observations of a Test Region (325·5° ≤ l ≤ 333·5°; -0·5° ≤ b ≤ 3·5°) were completed in December 1998. Single-dish observations of the full survey region (253° ≤ l ≤ 358°; |b| ≤ 1°) with the Parkes Radio Telescope were completed in March 2000. We present a sample of SGPS H I data, with particular attention to the smallest- and largest-scale structures seen in absorption and emission, respectively. On the large scale, we detect many prominent H I shells. On the small scale, we note extremely compact, cold clouds seen in H I self-absorption. We explore how these two classes of objects probe opposite ends of the H I spatial power spectrum.

Item Details

Item Type:Refereed Article
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Galactic astronomy
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the physical sciences
UTAS Author:Dickey, JM (Professor John Dickey)
ID Code:46813
Year Published:2001
Web of Science® Times Cited:8
Deposited By:Physics
Deposited On:2007-09-04
Last Modified:2011-08-03

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