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The Minimum period problem in CVs

Barker, J. and Kolb, U. (2006). The Minimum period problem in CVs. In: ASP Conference Proceedings: The Physics of Cataclysmic Variables and Related Objects, San Francisco: Astronomical Society of the Pacific.

URL: http://arxiv.org/abs/astro-ph/0212125
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Abstract

We investigate if consequential angular momentum losses (CAML) or an intrinsic deformation of the donor star in CVs could increase the CV bounce period from the canonical theoretical value ~65 min to the observed value $P_{min} \approx77$ min, and if a variation of these effects in a CV population could wash out the theoretically predicted accumulation of systems near the minimum period (the period spike). We are able to construct suitably mixed CV model populations that a statisticial test cannot rule out as the parent population of the observed CV sample. However, the goodness of fit is never convincing, and always slightly worse than for a simple, flat period distribution. Generally, the goodness of fit is much improved if all CVs are assumed to form at long orbital periods. The weighting suggested by King, Schenker & Hameury (2002) does not constitute an improvment if a realistically shaped input period distribution is used.

Item Type: Conference Item
Extra Information: The Physics of Cataclysmic Variables and Related Objects, ASP Conference Proceedings, Vol. 261. Edited by B. T. Gänsicke, K. Beuermann, and K. Reinsch. ISBN: 1-58381-101-X. San Francisco: Astronomical Society of the Pacific, 2002, p. 271.
--Some of the symbols may not have transferred correctly into this bibliographic record and/or abstract.
Keywords: binaries; stars; evolution; mass-loss; novae; cataclysmic variables
Academic Unit/Department: Science > Physical Sciences
Interdisciplinary Research Centre: Centre for Earth, Planetary, Space and Astronomical Research (CEPSAR)
Item ID: 4683
Depositing User: Users 6041 not found.
Date Deposited: 22 Dec 2006
Last Modified: 24 Nov 2014 12:00
URI: http://oro.open.ac.uk/id/eprint/4683
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