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Is the common envelope ejection efficiency a function of the binary parameters?

Davis, P. J.; Kolb, U. and Knigge, C. (2011). Is the common envelope ejection efficiency a function of the binary parameters? In: Astronomical Society of the Pacific Conference Series, 6-11 May 2011, Vina del Mar, Chile, p. 115.

URL: http://www.astrosociety.org/pubs/cs/confseries.htm...
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Abstract

We reconstruct the common envelope (CE) phase for the observed sample of white dwarf-main sequence post-common envelope binaries, with and without considering the internal energy of the progenitor giants' envelope. Using multi-regression analysis in the former case, we can model the CE ejection efficiency, αCE, in terms of the orbital period of the progenitor binary at the start of the CE phase. Considering the latter, αCE can be modelled in terms of the white dwarf mass. Finally, we compare our work with similar studies by Zorotovic et al. (2010) and De Marco et al. (2011).

Item Type: Conference Item
Copyright Holders: 2011 The Astronomical Society of the Pacific
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
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Item ID: 30997
Depositing User: Ulrich Kolb
Date Deposited: 26 Jan 2012 16:19
Last Modified: 05 Mar 2014 10:27
URI: http://oro.open.ac.uk/id/eprint/30997
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