We measured the magnetic field of the bright, evolved hot subdwarf HD 76431 by means of high-resolution spectropolarimetry. In contrast to previous measurements we were not able to detect a significant magnetic field. We discuss the possibility that this field may be variable. Our search for a possible companion star to HD 76431 led to inconclusive results.
@article{arxiv.1112.2921,
title = {HD 76431 - An evolved hot subdwarf with variable magnetic field?},
author = {G. Chountonov and S. Geier},
journal= {arXiv preprint arXiv:1112.2921},
year = {2011}
}
Comments
6 pages, 5 figures, To appear in ASP Conference Series; Proceedings of the fifth meeting on hot subdwarf stars and related objects (sdOB05), 25 - 29 July 2011, Stellenbosch, South Africa