Discovery of magnetic fields in hot subdwarfs
Astrophysics
2009-11-10 v1
Abstract
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.
Cite
@article{arxiv.astro-ph/0503243,
title = {Discovery of magnetic fields in hot subdwarfs},
author = {S. J. O'Toole and S. Jordan and S. Friedrich and U. Heber},
journal= {arXiv preprint arXiv:astro-ph/0503243},
year = {2009}
}
Comments
9 pages, 7 figures, A&A accepted