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H I ABSORPTION TOWARD H II REGIONS AT SMALL GALACTIC LONGITUDES

Jones, C.; Dickey, John; Dawson, J.R.; McClure-Griffiths, Naomi; Anderson, L.D.; Bania, T.M.

Description

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...[Show more]

CollectionsANU Research Publications
Date published: 2013
Type: Journal article
URI: http://hdl.handle.net/1885/152143
Source: The Astrophysical Journal
DOI: 10.1088/0004-637X/774/2/117

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