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Atomic Hydrogen in a galactic center outflow


McClure-Griffiths, NM and Green, JA and Hill, AS and Lockman, FJ and Dickey, JM and Gaensler, BM and Green, AJ, Atomic Hydrogen in a galactic center outflow, The Astrophysical Journal Letters, 770, (1) Article L4. ISSN 2041-8205 (2013) [Refereed Article]

Copyright Statement

Copyright 2013 The American Astronomical Society

DOI: doi:10.1088/2041-8205/770/1/L4


We describe a population of small, high-velocity, atomic hydrogen clouds, loops, and filaments found above and below the disk near the Galactic center. The objects have a mean radius of 15 pc, velocity widths of ~14 km s1, and are observed at |z| heights up to 700 pc. The velocity distribution of the clouds shows no signature of Galactic rotation. We propose a scenario where the clouds are associated with an outflow from a central star-forming region at the Galactic center. We discuss the clouds as entrained material traveling at ~200 km s1 in a Galactic wind.

Item Details

Item Type:Refereed Article
Keywords:Galaxy: center - ISM: clouds
Research Division:Physical Sciences
Research Group:Astronomical sciences
Research Field:Cosmology and extragalactic 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:85111
Year Published:2013
Web of Science® Times Cited:34
Deposited By:Mathematics and Physics
Deposited On:2013-06-14
Last Modified:2017-11-06

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