Detached shells as tracers of asymptotic giant branch-interstellar medium bow shocks

C. J. Wareing; Albert A. Zijlstra; Angela K. Speck; T. J. O'Brien; Toshiya Ueta; M. Elitzur; R. D. Gehrz; F. Herwig; H. Izumiura; M. Matsuura; M. Meixner; R. E. Stencel; R. E. Szczerba

doi:10.1111/j.1745-3933.2006.00227.x

Detached shells as tracers of asymptotic giant branch-interstellar medium bow shocks

C. J. Wareing, Albert A. Zijlstra, Angela K. Speck, T. J. O'Brien, Toshiya Ueta, M. Elitzur, R. D. Gehrz, F. Herwig, H. Izumiura, M. Matsuura, M. Meixner, R. E. Stencel, R. E. Szczerba

Minnesota Institute for Astrophysics

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

32 Scopus citations

Abstract

New Spitzer imaging observations have revealed the structure around the Mira variable star R Hya to be a one-sided parabolic arc 100 arcsec to the west, stretching from north to south. We successfully model R Hya and its surroundings in terms of an interaction of the stellar wind from an asymptotic giant branch (AGB) star with the interstellar medium (ISM) the star moves through. Our three-dimensional hydrodynamic simulation reproduces the structure as a bow shock into the oncoming ISM. We propose this as another explanation of detached shells around such stars, which should be considered alongside current theories of internal origin. The simulation predicts the existence of a tail of ram-pressure-stripped AGB material stretching downstream. Indications for such a tail behind R Hya are seen in IRAS maps.

Original language	English (US)
Pages (from-to)	L63-L67
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	372
Issue number	1
DOIs	https://doi.org/10.1111/j.1745-3933.2006.00227.x
State	Published - Oct 2006

Keywords

ISM: structure
Stars: AGB and post-AGB
Stars: individual: R Hya
Stars: mass-loss

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Wareing, C. J., Zijlstra, A. A., Speck, A. K., O'Brien, T. J., Ueta, T., Elitzur, M., Gehrz, R. D., Herwig, F., Izumiura, H., Matsuura, M., Meixner, M., Stencel, R. E., & Szczerba, R. E. (2006). Detached shells as tracers of asymptotic giant branch-interstellar medium bow shocks. Monthly Notices of the Royal Astronomical Society: Letters, 372(1), L63-L67. https://doi.org/10.1111/j.1745-3933.2006.00227.x

Wareing, CJ, Zijlstra, AA, Speck, AK, O'Brien, TJ, Ueta, T, Elitzur, M, Gehrz, RD, Herwig, F, Izumiura, H, Matsuura, M, Meixner, M, Stencel, RE & Szczerba, RE 2006, 'Detached shells as tracers of asymptotic giant branch-interstellar medium bow shocks', Monthly Notices of the Royal Astronomical Society: Letters, vol. 372, no. 1, pp. L63-L67. https://doi.org/10.1111/j.1745-3933.2006.00227.x

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abstract = "New Spitzer imaging observations have revealed the structure around the Mira variable star R Hya to be a one-sided parabolic arc 100 arcsec to the west, stretching from north to south. We successfully model R Hya and its surroundings in terms of an interaction of the stellar wind from an asymptotic giant branch (AGB) star with the interstellar medium (ISM) the star moves through. Our three-dimensional hydrodynamic simulation reproduces the structure as a bow shock into the oncoming ISM. We propose this as another explanation of detached shells around such stars, which should be considered alongside current theories of internal origin. The simulation predicts the existence of a tail of ram-pressure-stripped AGB material stretching downstream. Indications for such a tail behind R Hya are seen in IRAS maps.",

keywords = "ISM: structure, Stars: AGB and post-AGB, Stars: individual: R Hya, Stars: mass-loss",

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AU - Wareing, C. J.

AU - Zijlstra, Albert A.

AU - Speck, Angela K.

AU - O'Brien, T. J.

AU - Ueta, Toshiya

AU - Elitzur, M.

AU - Gehrz, R. D.

AU - Herwig, F.

AU - Izumiura, H.

AU - Matsuura, M.

AU - Meixner, M.

AU - Stencel, R. E.

AU - Szczerba, R. E.

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N2 - New Spitzer imaging observations have revealed the structure around the Mira variable star R Hya to be a one-sided parabolic arc 100 arcsec to the west, stretching from north to south. We successfully model R Hya and its surroundings in terms of an interaction of the stellar wind from an asymptotic giant branch (AGB) star with the interstellar medium (ISM) the star moves through. Our three-dimensional hydrodynamic simulation reproduces the structure as a bow shock into the oncoming ISM. We propose this as another explanation of detached shells around such stars, which should be considered alongside current theories of internal origin. The simulation predicts the existence of a tail of ram-pressure-stripped AGB material stretching downstream. Indications for such a tail behind R Hya are seen in IRAS maps.

AB - New Spitzer imaging observations have revealed the structure around the Mira variable star R Hya to be a one-sided parabolic arc 100 arcsec to the west, stretching from north to south. We successfully model R Hya and its surroundings in terms of an interaction of the stellar wind from an asymptotic giant branch (AGB) star with the interstellar medium (ISM) the star moves through. Our three-dimensional hydrodynamic simulation reproduces the structure as a bow shock into the oncoming ISM. We propose this as another explanation of detached shells around such stars, which should be considered alongside current theories of internal origin. The simulation predicts the existence of a tail of ram-pressure-stripped AGB material stretching downstream. Indications for such a tail behind R Hya are seen in IRAS maps.

KW - ISM: structure

KW - Stars: AGB and post-AGB

KW - Stars: individual: R Hya

KW - Stars: mass-loss

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ER -

Detached shells as tracers of asymptotic giant branch-interstellar medium bow shocks

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