Doppler Tomography of Dwarf Nova IY UMa during Quiescence
  Quiescent Doppler tomography of the newly discovered deeply-eclipsing SU UMa system IY UMa reveals properties of the region where the accretion stream from the donor impacts the edge of the disc. A very strong bright spot is produced and the Keplerian disc emission in the impact region is disrupted or obscured. The differing properties of Halpha, Hbeta and He I emission will allow physical parameters of the converging flow region to be studied. 
Daniel J. Rolfe (1), Timothy M.C. Abbott (2), Carole A. Haswell (1)   ((1) The Open University, (2) Nordic Optical Telescope)