Computed spectral line variations for oblique non-radial pulsators

Spectral line profiles are computed for non-radially pulsating CP2 stars. For a range which currently is thought to be typical for these stars, the influence of six parameters on the line profiles of single mode pulsators is investigated: mode order l and degree m, pulsation velocity amplitude, angle between the rotation and pulsation axis, angle between the rotation axis and the line-of-sight, and phase angle of the rotation. In view of the expected low signal-to-noise ratio of observational data, the authors study to what extent easily measurable, simple quantities can still be useful in discriminating between different modes.