Vortices in the wakes of asymptotic giant branch stars

C. J. Wareing; Albert A. Zijlstra; T. J. O'Brien

doi:10.1086/518308

Vortices in the wakes of asymptotic giant branch stars

C. J. Wareing, Albert A. Zijlstra, T. J. O'Brien

Research output: Contribution to journal › Article › peer-review

Abstract

Vortices have been postulated at a range of size scales in the universe, including at the stellar-size scale. While hydrodynamically simulating the wind from an asymptotic giant branch (AGB) star moving through and sweeping up its surrounding interstellar medium (ISM), we have found vortices on the size scale of 10-1 to 101 pc in the wake of the star. These vortices appear to be the result of instabilities at the head of the bow shock formed upstream of the AGB star. The instabilities peel off downstream and form vortices in the tail of AGB material behind the bow shock, mixing with the surrounding ISM. We suggest such structures are visible in the planetary nebula Sh 2-188. © 2007. The American Astronomical Society. All rights reserved.

Original language	English
Pages (from-to)	L129-L132
Journal	Astrophysical Journal
Volume	660
Issue number	2
DOIs	https://doi.org/10.1086/518308
Publication status	Published - 10 May 2007

Keywords

Circumstellar matter
Hydrodynamics
ISM: structure
Stars: AGB and post-AGB
Stars: mass loss
Turbulence

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10.1086/518308

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title = "Vortices in the wakes of asymptotic giant branch stars",

abstract = "Vortices have been postulated at a range of size scales in the universe, including at the stellar-size scale. While hydrodynamically simulating the wind from an asymptotic giant branch (AGB) star moving through and sweeping up its surrounding interstellar medium (ISM), we have found vortices on the size scale of 10-1 to 101 pc in the wake of the star. These vortices appear to be the result of instabilities at the head of the bow shock formed upstream of the AGB star. The instabilities peel off downstream and form vortices in the tail of AGB material behind the bow shock, mixing with the surrounding ISM. We suggest such structures are visible in the planetary nebula Sh 2-188. {\textcopyright} 2007. The American Astronomical Society. All rights reserved.",

keywords = "Circumstellar matter, Hydrodynamics, ISM: structure, Stars: AGB and post-AGB, Stars: mass loss, Turbulence",

author = "Wareing, {C. J.} and Zijlstra, {Albert A.} and O'Brien, {T. J.}",

year = "2007",

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doi = "10.1086/518308",

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journal = "Astrophysical Journal",

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publisher = "American Astronomical Society",

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TY - JOUR

T1 - Vortices in the wakes of asymptotic giant branch stars

AU - Wareing, C. J.

AU - Zijlstra, Albert A.

AU - O'Brien, T. J.

PY - 2007/5/10

Y1 - 2007/5/10

N2 - Vortices have been postulated at a range of size scales in the universe, including at the stellar-size scale. While hydrodynamically simulating the wind from an asymptotic giant branch (AGB) star moving through and sweeping up its surrounding interstellar medium (ISM), we have found vortices on the size scale of 10-1 to 101 pc in the wake of the star. These vortices appear to be the result of instabilities at the head of the bow shock formed upstream of the AGB star. The instabilities peel off downstream and form vortices in the tail of AGB material behind the bow shock, mixing with the surrounding ISM. We suggest such structures are visible in the planetary nebula Sh 2-188. © 2007. The American Astronomical Society. All rights reserved.

AB - Vortices have been postulated at a range of size scales in the universe, including at the stellar-size scale. While hydrodynamically simulating the wind from an asymptotic giant branch (AGB) star moving through and sweeping up its surrounding interstellar medium (ISM), we have found vortices on the size scale of 10-1 to 101 pc in the wake of the star. These vortices appear to be the result of instabilities at the head of the bow shock formed upstream of the AGB star. The instabilities peel off downstream and form vortices in the tail of AGB material behind the bow shock, mixing with the surrounding ISM. We suggest such structures are visible in the planetary nebula Sh 2-188. © 2007. The American Astronomical Society. All rights reserved.

KW - Circumstellar matter

KW - Hydrodynamics

KW - ISM: structure

KW - Stars: AGB and post-AGB

KW - Stars: mass loss

KW - Turbulence

U2 - 10.1086/518308

DO - 10.1086/518308

M3 - Article

SN - 1538-4357

VL - 660

SP - L129-L132

JO - Astrophysical Journal

JF - Astrophysical Journal

IS - 2

ER -

Vortices in the wakes of asymptotic giant branch stars

Abstract

Keywords

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