Wareing, CJ, Zijlstra, AA and O'Brien, TJ (2007) The interaction of planetary nebulae and their asymptotic giant branch progenitors with the interstellar medium. Monthly Notices of the Royal Astronomical Society, 382 (3). 1233 - 1245 . ISSN 0035-8711
Abstract
Interaction with the Interstellar Medium (ISM) cannot be ignored in understanding planetary nebula (PN) evolution and shaping. In an effort to understand the range of shapes observed in the outer envelopes of PNe, we have run a comprehensive set of three-dimensional hydrodynamic simulations, from the beginning of the asymptotic giant branch (AGB) superwind phase until the end of the post– AGB/PN phase. A ’triple-wind’ model is used, including a slow AGB wind, fast post–AGB wind and third wind reflecting the linear movement through the ISM. A wide range of stellar velocities, mass-loss rates and ISM densities have been considered. We find ISM interaction strongly affects outer PN structures, with the dominant shaping occuring during the AGB phase. The simulations predict four stages of PN–ISM interaction whereby the PN is initially unaffected (1), then limb-brightened in the direction of motion (2), then distorted with the star moving away from the geometric centre (3) and finally so distorted that the object is no longe r recognisable as a PN and may not be classed as such (4). Parsec-size shells around PN are predicted to be common. The structure and brightness of ancient PNe is largely determined by the ISM interaction, caused by rebrightening during the sec ond stage; this effect may address the current discrepancies in Galactic PN abundance. The majority of PNe will have tail structures. Evidence for strong interaction is found for all known planetary nebulae in globular clusters.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Keywords: | hydrodynamics, stars : AGB and post-AGB, stars : mass-loss, planetary nebulae : general, ISM : structure |
Dates: |
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Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 08 May 2013 10:36 |
Last Modified: | 23 Jun 2023 21:32 |
Published Version: | http://dx.doi.org/10.1111/j.1365-2966.2007.12459.x |
Status: | Published |
Publisher: | Oxford University Press |
Identification Number: | 10.1111/j.1365-2966.2007.12459.x |
Related URLs: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:75495 |