Astronomy and Astrophysics – Astrophysics – Galaxy Astrophysics
Scientific paper
2011-11-07
Astronomy and Astrophysics
Astrophysics
Galaxy Astrophysics
Accepted by MNRAS. This paper consists of 15 pages and contains 10 figures and 5 tables
Scientific paper
We present high-resolution HI data obtained using the Australia Telescope Compact Array to resolve the near/far distance ambiguities towards a sample of compact HII regions from the Red MSX Source (RMS) survey. The high resolution data are complemented with lower resolution archival HI data extracted from the Southern and VLA Galactic Plane surveys. We resolve the distance ambiguity for nearly all of the 105 sources where the continuum was strong enough to allow analysis of the HI absorption line structure. This represents another step in the determination of distances to the total RMS sample, which with over 1,000 massive young stellar objects and compact HII regions, is the largest and most complete sample of its kind. The full sample will allow the distribution of massive star formation in the Galaxy to be examined.
Cooper Heather D. B.
Hoare Melvin G.
Lumsden Stuart L.
Moore Toby J. T.
Mottram Joseph Christopher
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