Diffusion and Settling in Ap/Bp Stars

Details Diffusion and Settling in Ap/Bp Stars Diffusion and Settling in Ap/Bp Stars

2003-04-23

arxiv.org/abs/astro-ph/0304424v1

Astronomy and Astrophysics

Astrophysics

7 pages, invited talk to International Conference on Magnetic Feilds in O, B and A Stars

Scientific paper

Ap/Bp stars are magnetic chemically peculiar early A and late B type stars of the main sequence. They exhibit peculiar surface abundance anomalies that are thought to be the result of gravitational settling and radiative levitation. The physics of diffusion in these stars are reviewed briefly and some model predictions are discussed. While models reproduce some observations reasonably well, more work is needed before the behavior of diffusing elements in a complex magnetic field is fully understood.

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