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The influence of binarity on the morpho-kinematics of planetary nebulae

Published online by Cambridge University Press:  30 August 2012

David Jones ,
Amy A. Tyndall ,
Myfanwy Lloyd  and
Miguel Santander-García
David Jones
Affiliation:
1European Southern Observatory, Alonso de Córdova 3107, Casilla 19001, Santiago, Chile email: [email protected]
Amy A. Tyndall
Affiliation:
Jodrell Bank Centre for Astrophysics, University of Manchester, Oxford Road, Manchester, M13 9PL, UK email: [email protected], [email protected]
Myfanwy Lloyd
Affiliation:
Jodrell Bank Centre for Astrophysics, University of Manchester, Oxford Road, Manchester, M13 9PL, UK email: [email protected], [email protected]
Miguel Santander-García
Affiliation:
Observatorio Astronómico Nacional, Ap 112, 28803 Alcalá de Henares, Spain email: [email protected]
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Abstract

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The role of central star binarity in the shaping of planetary nebulae (PNe) has been the subject of much debate, with single stars believed to be incapable of producing the most highly collimated morphologies. However, observational support for binary-induced shaping has been sadly lacking. Here, we highlight the results of a continuing programme to spatio-kinematically model the morphologies of all PNe known to contain a close binary central star. Spatio-kinematical modelling is imperative for these objects, as it circumvents the degeneracy between morphology and orientation which can adversely affect determinations of morphology based on imaging alone. Furthermore, spatio-kinematical modelling accurately determines the orientation of the nebular shell, allowing the theoretically predicted perpendicular alignment, between nebular symmetry axis and binary orbital plane, to be tested. To date, every PN subjected to this investigation has displayed the predicted alignment, indicating that binarity has played an important role in the formation and evolution of these nebulae. The further results from this programme will be key, not only in determining whether binary interaction is responsible for shaping the studied PNe, but also in assessing the importance of binarity in the formation and evolution of all PNe in general.

Keywords

binaries: closeISM: kinematics and dynamicsISM: jets and outflowsplanetary nebulae: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S283: Planetary Nebulae: An Eye to the Future , July 2011 , pp. 402 - 403
Copyright
Copyright © International Astronomical Union 2012

References

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