Astronomy and Astrophysics – Astrophysics
Scientific paper
2002-12-05
Astronomy and Astrophysics
Astrophysics
10 pages, Latex, 13 postscript figures, Accepted for publication in MNRAS
Scientific paper
10.1046/j.1365-8711.2003.06323.x
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. Put your abstract here.
Barker Jonathan
Kolb U. C.
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