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Axisymmetric outflows from single and binary stars

from Part one - Stellar Evolution and Wind Theory

Published online by Cambridge University Press:  07 September 2010

By
Mario Livio
Edited by
R. E. S. Clegg ,
I. R. Stevens  and
W. P. S. Meikle
Mario Livio
Affiliation:
Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA and Dept. of Physics, Technion, Haifa 32000, Israel
R. E. S. Clegg
Affiliation:
Royal Greenwich Observatory, Cambridge
I. R. Stevens
Affiliation:
Imperial College of Science, Technology and Medicine, London
W. P. S. Meikle
Affiliation:
University of Birmingham
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Summary

Abstract

Mechanisms that can produce axisymmetric planetary nebulae are reviewed. It is suggested that the “interacting winds” model, in the presence of a “density contrast” between the equatorial and polar directions, can produce most of the observed morphologies.

Mechanisms that can produce a density contrast are examined and it is suggested that binary stellar companions and even brown dwarfs and massive planets may play an important role in the generation of such a contrast, either via common envelope evolution or by spinning up the envelope of the AGB star. It is shown that the statistics of planetary nebulae of different morphological types are consistent with models which rely on the presence of binary companions.

Introduction

Axisymmetric outflows are associated with many nebulae (e.g. He 2-36, BI Cru, My Cn 18, IC 4406, K 3-72, Corradi & Schwarz 1993a, b, c; OH 17.7–2.0, La Bertre 1986; R Aquarii, Burgarella & Paresce 1992) and with Be stars. I will concentrate in the present review mainly on planetary nebulae (PNe).

An examination of the catalogue of narrow band images of Schwarz, Corradi and Melnick (1992) and other images in the literature reveals a few interesting morphologies. In some cases, almost perfect rings are observed (e.g. ScWe 3, ScWe 2, Schwarz, Corradi & Melnick 1992; Hen 1357, Bobrowsky 1993).

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Circumstellar Media in Late Stages of Stellar Evolution , pp. 35 - 51
Publisher: Cambridge University Press
Print publication year: 1994

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  • Axisymmetric outflows from single and binary stars
    • By Mario Livio, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA and Dept. of Physics, Technion, Haifa 32000, Israel
  • Edited by R. E. S. Clegg, Royal Greenwich Observatory, Cambridge, I. R. Stevens, Imperial College of Science, Technology and Medicine, London, W. P. S. Meikle, University of Birmingham
  • Book: Circumstellar Media in Late Stages of Stellar Evolution
  • Online publication: 07 September 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511564628.007
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  • Axisymmetric outflows from single and binary stars
    • By Mario Livio, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA and Dept. of Physics, Technion, Haifa 32000, Israel
  • Edited by R. E. S. Clegg, Royal Greenwich Observatory, Cambridge, I. R. Stevens, Imperial College of Science, Technology and Medicine, London, W. P. S. Meikle, University of Birmingham
  • Book: Circumstellar Media in Late Stages of Stellar Evolution
  • Online publication: 07 September 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511564628.007
Available formats
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Save book to Google Drive

To save content items to your account, please confirm that you agree to abide by our usage policies. If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account. Find out more about saving content to Google Drive.

  • Axisymmetric outflows from single and binary stars
    • By Mario Livio, Space Telescope Science Institute, 3700 San Martin Drive, Baltimore, MD 21218, USA and Dept. of Physics, Technion, Haifa 32000, Israel
  • Edited by R. E. S. Clegg, Royal Greenwich Observatory, Cambridge, I. R. Stevens, Imperial College of Science, Technology and Medicine, London, W. P. S. Meikle, University of Birmingham
  • Book: Circumstellar Media in Late Stages of Stellar Evolution
  • Online publication: 07 September 2010
  • Chapter DOI: https://doi.org/10.1017/CBO9780511564628.007
Available formats
×