HI absorption toward H II regions at small galactic longitudes

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

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

HI absorption toward H II regions at small galactic longitudes

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

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18 Citations (Scopus)

Abstract

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.

Original language	English
Article number	117
Journal	Astrophysical Journal
Volume	774
Issue number	2
DOIs	https://doi.org/10.1088/0004-637X/774/2/117
Publication status	Published - 10 Sept 2013
Externally published	Yes

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title = "HI absorption toward H II regions at small galactic longitudes",

abstract = "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.",

keywords = "Galaxy: structure, Hii regions",

author = "C. Jones and Dickey, {J. M.} and Dawson, {J. R.} and McClure-Griffiths, {N. M.} and Anderson, {L. D.} and Bania, {T. M.}",

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doi = "10.1088/0004-637X/774/2/117",

language = "English",

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TY - JOUR

T1 - HI absorption toward H II regions at small galactic longitudes

AU - Jones, C.

AU - Dickey, J. M.

AU - Dawson, J. R.

AU - McClure-Griffiths, N. M.

AU - Anderson, L. D.

AU - Bania, T. M.

PY - 2013/9/10

Y1 - 2013/9/10

N2 - 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.

AB - 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.

KW - Galaxy: structure

KW - Hii regions

UR - http://www.scopus.com/inward/record.url?scp=84883643743&partnerID=8YFLogxK

U2 - 10.1088/0004-637X/774/2/117

DO - 10.1088/0004-637X/774/2/117

M3 - Article

SN - 0004-637X

VL - 774

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

M1 - 117

ER -

HI absorption toward H II regions at small galactic longitudes

Abstract

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