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Grand Challenges in Planetary Nebulae Studies: Binary Evolution and MHD

Published online by Cambridge University Press:  15 December 2006

Adam Frank
Adam Frank
Affiliation:
Department of Physics and Astronomy, University of Rochester, Rochester, NY 14627, USA email: afrank@pas.rochester.edu
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Abstract

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We review work on the evolution of planetary nebulae and proto-planetaries via magneto-rotational mechanisms showing that a dynamo generated magnetic field can produce the energy and momentum needed to drive pPN and PNe outflows. Angular momentum considerations lead to the conclusion that single stars can not support strong fields for long times. Thus we take the working hypothesis that most PN may form via binary stars. We propose that the grand challenge for PN studies is fully understanding the diverse physical processes at work in binary late stage evolution including the development of disks, fields and outflows.

Keywords

Planetary nebulae: generalstars: mass lossmagnetic fields
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 2 , Symposium S234: Planetary Nebulae in our Galaxy and Beyond , April 2006 , pp. 293 - 296
Copyright
© 2006 International Astronomical Union