1303.6442 (Bo Ma et al.)

Statistical Properties of Brown Dwarf Companions: Implications for Different Formation Mechanisms    [PDF]

Bo Ma, Jian Ge

The mass domain where massive extrasolar planets and brown dwarfs overlap is still poorly understood due to the paucity of brown dwarfs orbiting close to solar-type stars, the so-called brown dwarf desert. In this paper we collect all of available data about close brown dwarfs around solar type stars and their host stars from literature and study the demographics of the brown dwarf desert. The data clearly show a short period and a medium mass gap in the brown dwarf period-mass distribution diagram ($ 35View original: http://arxiv.org/abs/1303.6442