Brown dwarfs in retrogradely precessing cataclysmic variables?
1 Department of Physics, UCF, 4000 Central Florida Blvd., Orlando, FL 32816, USA
2 Centro de Astrobioloiga (CAB-CSIC), Ctra. Ajalvir km 4, 28850 Torrejon de Ardoz, Madrid, Spain
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We compare Smoothed Particle Hydrodynamic simulations of retrogradely precessing accretion disks that have a white dwarf primary and a main sequence secondary with observational data and with theory on retrograde precession via tidal torques like those by the Moon and the Sun on the Earth [1, 2]. Assuming the primary does not accrete much of the mass lost from the secondary, we identify the theoretical low mass star/brown dwarf boundary. We find no observational candidates in our study that could qualify as brown dwarfs.
© Owned by the authors, published by EDP Sciences, 2011