Discovery of magnetic fields in hot subdwarfs
| dc.creator | O'Toole, S. J. | |
| dc.creator | Jordan, S. | |
| dc.creator | Friedrich, S. | |
| dc.creator | Heber, U. | |
| dc.date | 2004-10-02 | |
| dc.date.accessioned | 2026-07-25T12:18:10Z | |
| dc.description | We present initial results of a project to measure mean longitudinal magnetic fields in a group of sdB/OB/O stars. The project was inspired by the discovery of three super-metal-rich sdOB stars, each having metals (e.g. Ti, V) enhanced by factors of 10^3 to 10^5. Similar behaviour is observed in chemically peculiar A stars, where strong magnetic fields are responsible for the enrichment. With this in mind, we obtained circularly polarised spectra of two of the super-metal-rich sdOBs, two "normal" sdBs and two sdOs using FORS1 on the ESO/VLT. By examining circular polarisation in the hydrogen Balmer lines and in helium lines, we have detected magnetic fields with strengths of 1-2 kG in most of our targets. This suggests that such fields are relatively common in hot subdwarfs. | |
| dc.description | 4 pages, to appear in White Dwarfs, eds. D. Koester, S. Moehler, ASP Conf. series | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0410042 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0410042 | |
| dc.identifier.uri | https://dspace.dare.co.zw/handle/123456789/9149 | |
| dc.subject | Astrophysics | |
| dc.title | Discovery of magnetic fields in hot subdwarfs | |
| dc.type | text |