Abstract
We investigate detectability of magnetic fields by Zeeman broadening of well-isolated spectral lines in F, G and K type stars. Data of unprecedented quality were taken with CES 1 mounted on the 3.6m ESO telescope at La Silla, Chile, in three campaigns in the optical range between 5770Å and 6280Å, each with a wavelength coverage of roughly 40Å. We use the SPINOR/STOPRO (cf. Frutiger et al. [1]) package developed by ETH 2 and MPS 3 to perform spectral line inversion via χ 2 minimization. Starting from constraints given by previous measurements of stellar parameters, we fit a number of extracted spectral lines. Eventually, our goal is to determine the product of the magnetic field strength B and the surface filling factor, B × f. Our work is in progress and thus no final measurements can be presented at this stage.
Original language | English |
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Pages (from-to) | 708-711 |
Number of pages | 4 |
Journal | AIP Conference Proceedings |
Volume | 1094 |
DOIs | |
Publication status | Published - 2009 |
MoE publication type | A4 Conference publication |
Event | Cambridge Workshop on Cool Stars, Stellar Systems and the Sun - St. Andrews, United Kingdom Duration: 21 Jul 2008 → 25 Jul 2008 Conference number: 15 |
Keywords
- Late-type
- Line
- Magnetic fields
- Profiles