AN ATLAS OF DOPPLER EMISSION-LINE TOMOGRAPHY OF CATACLYSMIC VARIABLE-STARS

Doppler emission-line tomography is a technique similar to medical tom ography. In this atlas the emission-line profiles of cataclysmic varia ble stars, seen at different orbital phases, are transformed into velo city space images. This transformation makes many of the complex line profile changes easier to interpret. The emission contributions of the disk and the s-wave are clearly separated in these images, and any em ission from the stream and the secondary star can often be identified. In this atlas, Doppler tomograms of Hbeta, He I lambda4471, and He II lambda4686 emission lines of 18 cataclysmic variable stars are presen ted. The Doppler images provide insights into the individual systems a nd a better technique for measuring the radial velocity amplitude of t he white dwarf.