Rolfe, D.J.; Abbott, T.M.C. and Haswell, C.A.
(2001). Doppler Tomography of the Dwarf Nova IY UMa During Quiescence.
In: Boffin, H.M.J.; Steeghs, D. and Cuypers, J. eds.
Astrotomography, Indirect Imaging Methods in Observational Astronomy.
Springer, pp. 39–44.
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 Hα, Hβ and He I emission will allow physical parameters of the converging flow region to be studied.
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