Astero-oscillometry as a new method for gauging stellar parameters is presented. It is based on a physical modeling of pulsationally induced line profile variability. First applications to rapidly rotating B-type stars yielded reasonable stellar parameters. Only the radii are systematically smaller compared to those derived by calibrations or calculated using stellar evolution models. This could be a hint that stellar evolution could possibly be influenced by rapid rotation. Since the method requires only one or a few pulsation modes to be excited, it is ideally suited to investigate early-type stars which normally show only few pulsation modes and are therefore not interesting for astero-seismological studies.
 

Jiri Kubat
Head of Stellar department