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Planetary Nebulae with binary nuclei

Published online by Cambridge University Press:  25 May 2016

Mario Livio*
Affiliation:
Space Telescope Science Institute 3700 San Martin Drive, Baltimore, MD 21218 e-mail: mlivio@stsci.edu

Abstract

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High resolution images of planetary nebulae have revealed a variety of non-spherical morphologies. In addition, some planetary nebulae were found to produce highly collimated jets. It is argued that binary central stars may play a crucial role in the production of all of these morphologies. In particular, a specific mechanism is identified for the generation of “point-symmetric” nebulae. It is shown that the study of binary nuclei of planetary nebulae can provide essential information for the understanding of the common envelope phase in the evolution of binary systems.

Information

Type
III. Central Stars
Copyright
Copyright © Kluwer 1997