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Powering and Shaping Planetary Nebulae: The Physics of Common Envelopes

Published online by Cambridge University Press:  27 October 2016

Jason Nordhaus  and
David S. Spiegel
Jason Nordhaus
Affiliation:
Dept. of Science and Mathematics, National Technical Institute for the Deaf Rochester Institute of Technology, Rochester, NY 14623, USA Center for Computational Relativity and Gravitation Rochester Institute of Technology, Rochester, NY 14623, USA email: nordhaus@astro.rit.edu
David S. Spiegel
Affiliation:
Algorithms Department, Stitch Fix San Francisco, CA 94103, USA
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Abstract

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The diversity of collimated outflows in post-asymptotic-giant-branch stars and their planetary nebula progeny are often explained by a combination of close binary interactions and accretion. The viability of such scenarios can be tested by comparing kinematic outflow data to determine minimum accretion rates necessary to power observed outflows. While many binary channels have been ruled out with this technique, common envelope interactions can accommodate the current observational constraints, are potentially common, lead to a diverse array of planetary-nebula shapes, and naturally produce period gaps for companions to white dwarfs.

Keywords

stars: AGB and post-AGB(stars:) binaries (including multiple): closestars: magnetic fieldsstars: mass loss(stars:) planetary systemsstars: evolution
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 11 , General Assembly A29B: Astronomy in Focus , August 2015 , pp. 33 - 36
Copyright
Copyright © International Astronomical Union 2016 

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