The magnetic fields of hot subdwarf stars

  title={The magnetic fields of hot subdwarf stars},
  author={John D. Landstreet and S Bagnulo and Luca Fossati and Stefan Jordan and S. O’Toole},
  journal={arXiv: Solar and Stellar Astrophysics},
Detection of magnetic fields has been reported in several sdO and sdB stars. Recent literature has cast doubts on the reliability of most of these detections. We revisit data previously published in the literature, and we present new observations to clarify the question of how common magnetic fields are in subdwarf stars. We consider a sample of about 40 hot subdwarf stars. About 30 of them have been observed with the FORS1 and FORS2 instruments of the ESO VLT. Here we present new FORS1 field… 

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