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The shaping of planetary nebulae through interaction with the interstellar medium

Published online by Cambridge University Press:  15 December 2006

C. J. Wareing ,
Albert A. Zijlstra  and
T. J. O'Brien
C. J. Wareing
Affiliation:
Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
Albert A. Zijlstra
Affiliation:
Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
T. J. O'Brien
Affiliation:
Jodrell Bank Centre for Astrophysics, School of Physics and Astronomy, The University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
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Abstract

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Interaction with the Interstellar Medium (ISM) cannot be ignored in models of PN evolution and shaping. As first pointed out by Villaver et al. (2003 ApJ 585 L49), this interaction begins during the AGB phase. We have run extensive sets of 3D simulations, from the beginning of the AGB superwind until the end of the PN phase to study this interaction. We find ISM interaction strongly affects the outer structures. The simulations predict parsec-size shells to be common. The structure and brightness of ancient PNe is largely determined by the ISM interaction during the AGB and the majority of PNe will have tail structures.

Keywords

stars: AGB and post-AGBcircumstellar matterplanetary nebulae: generalISM: structureISM: evolutionstars: mass-losshydrodynamics
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 541 - 542
Copyright
© 2006 International Astronomical Union