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Close-Binary Nuclei of Planetary Nebulae

Published online by Cambridge University Press:  07 August 2017

Howard E. Bond ,
Robin Ciardullo  and
Michael G. Meakes
Howard E. Bond
Affiliation:
Space Telescope Science Institute
Robin Ciardullo
Affiliation:
Pennsylvania State University
Michael G. Meakes
Affiliation:
Space Telescope Science Institute

Abstract

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Close-binary planetary-nebula nuclei (PNNs) provide direct evidence for occurrence of a common-envelope phase in binary-star evolution. Their descendants are V471 Tauri-type detached binaries, cataclysmic binaries, and possibly Type I supernovae. Thirteen close-binary PNNs are now known from periodic photometric or radial-velocity variations, or from composite optical/UV spectra. At least 10% of PNNs are close binaries, a fraction more than sufficient to account for the formation of all of the cataclysmic variables in the solar neighborhood. The Abell 35-type binary PNNs, a class with three known members, contain rapidly rotating, chromospherically active late-type primary stars along with extremely hot companions detected with the IUE satellite.

Type
Oral and Contributed Papers
Information
Symposium - International Astronomical Union , Volume 151: Evolutionary Processes in Interacting Binary Stars , 1992 , pp. 517 - 521
Copyright
Copyright © Kluwer 1992 

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