Doppler tomography for investigation of cataclysmic variables

This work is devoted to the application of Doppler tomography for investigation of cataclysmic variables. This method uses changes in a spectral line profile with an orbital period and allows one to create a map of radiating matter velocities in a binary system (Doppler map). This map gives the possibility to study the space distribution of the radiating matter. We used a modified Spruit program code “dopmap” for realization of the method. Using spectra obtained with BTA, we derived and analyzed the Doppler maps of various spectral lines for four new cataclysmic variables: HBHA 4705-03, MT Dra, SDSS J205017.85+053626.8 and SDSS J160450.16+414328.6.