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Galaxies 2018, 6(3), 75; https://doi.org/10.3390/galaxies6030075

Planetary Nebulae Embryo after a Common Envelope Event

1
Department of Physics, University of Alberta, Edmonton, AB T6G 2E7, Canada
2
SHARCNET, Faculty of Science, University of Western Ontario, London, ON N6A 5B7, Canada
*
Author to whom correspondence should be addressed.
Received: 7 June 2018 / Revised: 1 July 2018 / Accepted: 9 July 2018 / Published: 19 July 2018
(This article belongs to the Special Issue Asymmetric Planetary Nebulae VII)
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Abstract

In the centers of some planetary nebulae are found close binary stars. The formation of those planetary nebulae was likely through a common envelope event, which transformed an initially-wide progenitor binary into the currently observed close binary, while stripping the outer layers away. A common envelope event proceeds through several qualitatively different stages, each of which ejects matter at its own characteristic speed, and with a different degree of symmetry. Here, we present how typical post-common envelope ejecta looks kinematically a few years after the start of a common envelope event. We also show some asymmetric features we have detected in our simulations (jet-like structures, lobes, and hemispheres). View Full-Text
Keywords: stellar evolution; binarity; planetary nebulae stellar evolution; binarity; planetary nebulae
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ivanova, N.; Nandez, J.L.A. Planetary Nebulae Embryo after a Common Envelope Event. Galaxies 2018, 6, 75.

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