New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars

Details New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars New magnetic field measurements of beta Cephei stars and Slowly Pulsating B stars

2009-01-21

arxiv.org/abs/0901.3319v1

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

2 pages, 1 figure, to appear in Proceedings of IAU Symposium 259 "Cosmic Magnetic Fields: from Planets, to Stars and Galaxies"

Scientific paper

We present the results of the continuation of our magnetic survey with FORS1 at the VLT of a sample of B-type stars consisting of confirmed or candidate beta Cephei stars and Slowly Pulsating B stars. Roughly one third of the studied beta Cephei stars have detected magnetic fields. The fraction of magnetic Slowly Pulsating B and candidate Slowly Pulsating B stars is found to be higher, up to 50%. We find that the domains of magnetic and non-magnetic pulsating stars in the H-R diagram largely overlap, and no clear picture emerges as to the possible evolution of the magnetic field across the main sequence.

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