The spots on Ap stars

  title={The spots on Ap stars},
  author={Oleg Kochukhov},
  journal={Proceedings of the International Astronomical Union},
  pages={249 - 255}
  • O. Kochukhov
  • Published 1 August 2010
  • Physics
  • Proceedings of the International Astronomical Union
Abstract The upper main sequence magnetic chemically peculiar (Ap) stars exhibit a non-uniform distribution of chemical elements across their surfaces and with height in their atmospheres. These inhomogeneities, responsible for the conspicuous photometric and spectroscopic variation of Ap stars, are believed to be produced by atomic diffusion operating in the stellar atmospheres stabilized by multi-kG magnetic fields. Here I present an overview of the current state-of-the-art in understanding… Expand
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