Atomic hydrogen in a galactic center outflow

N. M. McClure-Griffiths; J. A. Green; A. S. Hill; F. J. Lockman; J. M. Dickey; B. M. Gaensler; A. J. Green

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

Atomic hydrogen in a galactic center outflow

N. M. McClure-Griffiths, J. A. Green, A. S. Hill, F. J. Lockman, J. M. Dickey, B. M. Gaensler, A. J. Green

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56 Citations (Scopus)

Abstract

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 s ^-1, 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 s^-1 in a Galactic wind.

Original language	English
Article number	L4
Journal	Astrophysical Journal Letters
Volume	770
Issue number	1
DOIs	https://doi.org/10.1088/2041-8205/770/1/L4
Publication status	Published - 10 Jun 2013
Externally published	Yes

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title = "Atomic hydrogen in a galactic center outflow",

abstract = "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 s -1, 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 s-1 in a Galactic wind.",

keywords = "Galaxy: center, ISM: clouds",

author = "McClure-Griffiths, {N. M.} and Green, {J. A.} and Hill, {A. S.} and Lockman, {F. J.} and Dickey, {J. M.} and Gaensler, {B. M.} and Green, {A. J.}",

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AU - McClure-Griffiths, N. M.

AU - Green, J. A.

AU - Hill, A. S.

AU - Lockman, F. J.

AU - Dickey, J. M.

AU - Gaensler, B. M.

AU - Green, A. J.

PY - 2013/6/10

Y1 - 2013/6/10

N2 - 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 s -1, 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 s-1 in a Galactic wind.

AB - 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 s -1, 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 s-1 in a Galactic wind.

KW - Galaxy: center

KW - ISM: clouds

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SN - 2041-8205

VL - 770

JO - Astrophysical Journal Letters

JF - Astrophysical Journal Letters

IS - 1

M1 - L4

ER -

Atomic hydrogen in a galactic center outflow

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