Oscillations in main sequence B-type stars - challenges to theory

Details Oscillations in main sequence B-type stars - challenges to theory Oscillations in main sequence B-type stars - challenges to theory

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007coast.150..175d&link_type=abstract

Communications in Astroseismology, Vol. 150, p.175

Astronomy and Astrophysics

Astronomy

3

Scientific paper

The current status of our understanding of the diversity of B-star pulsation is presented with an emphasis on unsolved problems. Not all detected modes are found unstable in standard models. The proposed way of extending the instability by invoking an iron accumulation in the driving zone is not free of difficulties. There are still controversies regarding the excitation of slow modes in Be stars. Nonlinear modelling of radial pulsations in β Cephei stars results in much higher amplitudes than observed. There must be hidden modes involved but we may only speculate about their nature.

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