15th european workshop on white dwarfs, proceedings vol:372 pages:483-486
ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES
15th European Workshop on White Dwarfs Leicester, ENGLAND, AUG 07-11, 2006
The discovery of a new eclipsing sdB+dM system is announced. We present photometric and spectroscopic data which allow us to calculate the physical parameters of the components and solve the orbit of the system. The cool companion must be at the low mass limit for an M dwarf star, with all orbital radial velocity semi-amplitude of K-1 = 49.1 km/s. In other respects the system is strikingly similar to the other three known systems of the HW Vir type.