Volume 437, Number 1, July I 2005
|Page(s)||227 - 234|
|Section||Stellar structure and evolution|
|Published online||10 June 2005|
Discovery of magnetic fields in hot subdwarfs
Dr. Remeis-Sternwarte, Astronomisches Institut der Universität Erlangen-Nürnberg, Sternwartstr. 7, Bamberg 96049, Germany e-mail: firstname.lastname@example.org
2 Astronomisches Rechen-Institut, Mönchhofstr. 12-14, 69221 Heidelberg, Germany
3 Max-Planck-Institut für extraterrestrische Physik, Giessenbachstr., 85748 Garching, Germany
Accepted: 4 March 2005
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 range 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.
Key words: stars: subdwarfs / stars: magnetic fields
© ESO, 2005
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