Discovery of magnetic fields in hot subdwarfs

Details Discovery of magnetic fields in hot subdwarfs Discovery of magnetic fields in hot subdwarfs

2005-03-10

arxiv.org/abs/astro-ph/0503243v1

Astronomy and Astrophysics

Astrophysics

9 pages, 7 figures, A&A accepted

Scientific paper

10.1051/0004-6361:20042554

We present polarisation measurements of sdB and sdO stars using FORS1 on the VLT. The observations were made as part of a project to determine whether magnetic fields in two super-metal-rich stars can explain their extreme abundance peculiarities. Field strengths of up to ~1.5 kG have been measured at varying levels of significance in each of our six targets, however no clear evidence was found between apparently normal subdwarfs and the metal-rich objects. The origin of the magnetic fields is unknown. We also discuss the implications of our measurements for magnetic flux conservation in late stages of stellar evolution.

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