| Issue |
EAS Publications Series
Volume 39, 2009
Stellar Magnetism
|
|
|---|---|---|
| Page(s) | 55 - 67 | |
| DOI | https://doi.org/10.1051/eas/0939004 | |
| Published online | 03 November 2009 | |
Stellar Magnetism
C. Neiner and J.-P. Zahn (eds)
EAS Publications Series, 39 (2009) 55-67
C. Neiner and J.-P. Zahn (eds)
EAS Publications Series, 39 (2009) 55-67
Current spectropolarimeters and methods to measure stellar magnetic fields
GEPI, Observatoire de Paris, CNRS, Université Paris Diderot, 5 place Jules Janssen, 92190 Meudon, France
In this chapter I present methods to measure stellar magnetic fields, in particular the regression method used with low-resolution spectropolarimeters and the Least Square Deconvolution method used with high-resolution spectropolarimeters. I discuss the advantages and inconvenients of each method and the various instruments available as of today. I conclude on the best polarimeter to use depending on the science goal and type of studied objects, and provide a short summary of the two ongoing large programmes MaPP and MiMeS.
© EAS, EDP Sciences, 2009