Next Article in Journal / Special Issue
X-ray Shaping of Planetary Nebulae
Previous Article in Journal / Special Issue
The Morphology of the Outflow in the Grazing Envelope Evolution
Article Menu
Issue 3 (September) cover image

Export Article

Open AccessArticle
Galaxies 2018, 6(3), 97; https://doi.org/10.3390/galaxies6030097

Post-AGB Discs from Common-Envelope Evolution

1
Department of Physics, University of Surrey, Guildford, Surrey GU2 7XH, UK
2
Institute of Astronomy, University of Cambridge, Madingley Road, Cambridge CB3 0HA, UK
*
Author to whom correspondence should be addressed.
Received: 26 July 2018 / Revised: 3 September 2018 / Accepted: 4 September 2018 / Published: 11 September 2018
(This article belongs to the Special Issue Asymmetric Planetary Nebulae VII)
Full-Text   |   PDF [320 KB, uploaded 19 September 2018]   |  

Abstract

Post-asymptotic giant branch (post-AGB) stars with discs are all binaries. Many of these binaries have orbital periods between 100 and 1000 days so cannot have avoided mass transfer between the AGB star and its companion, likely through a common-envelope type interaction. We report on preliminary results of our project to model circumbinary discs around post-AGB stars using our binary population synthesis code binary_c. We combine a simple analytic thin-disc model with binary stellar evolution to estimate the impact of the disc on the binary, and vice versa, fast enough that we can model stellar population and hence explore the rather uncertain parameter space involved with disc formation. We find that, provided the discs form with sufficient mass and angular momentum, and have an inner edge that is relatively close to the binary, they can both prolong the life of their parent post-AGB star and pump the eccentricity of orbits of their inner binaries. View Full-Text
Keywords: binary stars; post-AGB; discs binary stars; post-AGB; discs
Figures

Figure 1

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).
SciFeed

Share & Cite This Article

MDPI and ACS Style

Izzard, R.G.; Jermyn, A.S. Post-AGB Discs from Common-Envelope Evolution. Galaxies 2018, 6, 97.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Galaxies EISSN 2075-4434 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top