SIMBAD references

Time resolved Hα spectroscopy and differential photometry at the U, B bands, reveal an orbital period of 1.884±0.005h and a K radial velocity semiamplitude of 49±6km/s. The dynamical solution and spectroscopic measures indicate a mass ratio M₂/M₁=0.115±0.005, a primary mass M₁=1.23±0.23M_☉, a secondary mass M₂=0.15±0.03M_☉ and an inclination angle i=59±6deg. Doppler imaging reveals a line emissivity decreasing with radius as r^–1.4. Smooth 0.11mag semiamplitude periodic oscillations at U and B bands, Hα V/R variations and equivalent width oscillations up to 15% of the mean value, could be due to a hotspot located in the stream-disk impact region. This picture is supported by the Hα Doppler tomogram.