AN INTERACTION OF A MAGELLANIC LEADING ARM HIGH-VELOCITY CLOUD WITH THE MILKY WAY DISK

N. M. McClure-Griffiths; L. Staveley-Smith; Felix J. Lockman; M. R. Calabretta; H. Alyson Ford; P. M.W. Kalberla; T. Murphy; H. Nakanishi; D. J. Pisano

doi:10.1086/528683

AN INTERACTION OF A MAGELLANIC LEADING ARM HIGH-VELOCITY CLOUD WITH THE MILKY WAY DISK

N. M. McClure-Griffiths, L. Staveley-Smith, Felix J. Lockman, M. R. Calabretta, H. Alyson Ford, P. M.W. Kalberla, T. Murphy, H. Nakanishi, D. J. Pisano

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45 Citations (Scopus)

Abstract

The Leading Arm of the Magellanic system is a tidally formed H i feature extending ∼60° from the Magellanic Clouds ahead of their direction of motion. Using atomic hydrogen (H i) data from the Galactic All-Sky Survey (GASS), supplemented with data from the Australia Telescope Compact Array, we have found evidence for an interaction between a cloud in the Leading Arm and the Galactic disk where the Leading Arm crosses the Galactic plane. The interaction occurs at velocities permitted by Galactic rotation, which allows us to derive a kinematic distance to the cloud of 21 kpc, suggesting that the Leading Arm crosses the Galactic plane at a Galactic radius of R ≈17 kpc.

Original language	English
Pages (from-to)	L143-L146
Journal	Astrophysical Journal
Volume	673
Issue number	2 PART 2
DOIs	https://doi.org/10.1086/528683
Publication status	Published - 2008
Externally published	Yes

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title = "AN INTERACTION OF A MAGELLANIC LEADING ARM HIGH-VELOCITY CLOUD WITH THE MILKY WAY DISK",

abstract = "The Leading Arm of the Magellanic system is a tidally formed H i feature extending ∼60° from the Magellanic Clouds ahead of their direction of motion. Using atomic hydrogen (H i) data from the Galactic All-Sky Survey (GASS), supplemented with data from the Australia Telescope Compact Array, we have found evidence for an interaction between a cloud in the Leading Arm and the Galactic disk where the Leading Arm crosses the Galactic plane. The interaction occurs at velocities permitted by Galactic rotation, which allows us to derive a kinematic distance to the cloud of 21 kpc, suggesting that the Leading Arm crosses the Galactic plane at a Galactic radius of R ≈17 kpc.",

keywords = "Galaxies: interactions, Galaxy: structure, Magellanic Clouds",

author = "McClure-Griffiths, {N. M.} and L. Staveley-Smith and Lockman, {Felix J.} and Calabretta, {M. R.} and Ford, {H. Alyson} and Kalberla, {P. M.W.} and T. Murphy and H. Nakanishi and Pisano, {D. J.}",

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doi = "10.1086/528683",

language = "English",

volume = "673",

pages = "L143--L146",

journal = "Astrophysical Journal",

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T1 - AN INTERACTION OF A MAGELLANIC LEADING ARM HIGH-VELOCITY CLOUD WITH THE MILKY WAY DISK

AU - McClure-Griffiths, N. M.

AU - Staveley-Smith, L.

AU - Lockman, Felix J.

AU - Calabretta, M. R.

AU - Ford, H. Alyson

AU - Kalberla, P. M.W.

AU - Murphy, T.

AU - Nakanishi, H.

AU - Pisano, D. J.

PY - 2008

Y1 - 2008

N2 - The Leading Arm of the Magellanic system is a tidally formed H i feature extending ∼60° from the Magellanic Clouds ahead of their direction of motion. Using atomic hydrogen (H i) data from the Galactic All-Sky Survey (GASS), supplemented with data from the Australia Telescope Compact Array, we have found evidence for an interaction between a cloud in the Leading Arm and the Galactic disk where the Leading Arm crosses the Galactic plane. The interaction occurs at velocities permitted by Galactic rotation, which allows us to derive a kinematic distance to the cloud of 21 kpc, suggesting that the Leading Arm crosses the Galactic plane at a Galactic radius of R ≈17 kpc.

AB - The Leading Arm of the Magellanic system is a tidally formed H i feature extending ∼60° from the Magellanic Clouds ahead of their direction of motion. Using atomic hydrogen (H i) data from the Galactic All-Sky Survey (GASS), supplemented with data from the Australia Telescope Compact Array, we have found evidence for an interaction between a cloud in the Leading Arm and the Galactic disk where the Leading Arm crosses the Galactic plane. The interaction occurs at velocities permitted by Galactic rotation, which allows us to derive a kinematic distance to the cloud of 21 kpc, suggesting that the Leading Arm crosses the Galactic plane at a Galactic radius of R ≈17 kpc.

KW - Galaxies: interactions

KW - Galaxy: structure

KW - Magellanic Clouds

UR - http://www.scopus.com/inward/record.url?scp=67949118622&partnerID=8YFLogxK

U2 - 10.1086/528683

DO - 10.1086/528683

M3 - Article

SN - 0004-637X

VL - 673

SP - L143-L146

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2 PART 2

ER -

AN INTERACTION OF A MAGELLANIC LEADING ARM HIGH-VELOCITY CLOUD WITH THE MILKY WAY DISK

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