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HI absorption toward HII regions at small galactic longitudes


Jones, C and Dickey, JM and Dawson, JR and McClure-Griffiths, NM and Anderson, LD and Bania, TM, HI absorption toward HII regions at small galactic longitudes, Astrophysical Journal, 774, (2) Article 117. ISSN 0004-637X (2013) [Refereed Article]


Copyright Statement

Copyright 2013 The American Astronomical Society

DOI: doi:10.1088/0004-637X/774/2/117


We make a comprehensive study of H I absorption toward H II regions located within |l| < 10°. Structures in the extreme inner Galaxy are traced using the longitude-velocity space distribution of this absorption. We find significant H I absorption associated with the Near and Far 3 kpc Arms, the Connecting Arm, Bania's Clump 1, and the H I Tilted Disk. We also constrain the line-of-sight distances to H II regions, by using H I absorption spectra together with the H II region velocities measured by radio recombination lines.

Item Details

Item Type:Refereed Article
Keywords:Galaxy: structure – HII regions
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:Jones, C (Mrs Courtney Brown)
UTAS Author:Dickey, JM (Professor John Dickey)
UTAS Author:Dawson, JR (Dr Joanne Dawson)
ID Code:86248
Year Published:2013
Web of Science® Times Cited:13
Deposited By:Mathematics and Physics
Deposited On:2013-08-30
Last Modified:2017-11-30
Downloads:131 View Download Statistics

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