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Proceedings Paper

Measurements of stellar magnetic fields with FORS 1 in spectropolarimetric mode
Author(s): S. Hubrig; T. Szeifert; M. Schöller; R. Schnerr
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Paper Abstract

In the last two years, the use of FORS 1 (FOcal Reducer low dispersion Spectrograph with polarimetric capability), mounted on the 8-m Kueyen telescope, led to a number of important advances in the studies of stellar magnetic fields. At the very beginning of these studies only the grism 600B was used with FORS 1 in polarimetric mode, providing the possibility to obtain both Stokes I and Stokes V as a function of wavelength in a spectral region from below the Balmer jump to Hβ. However, very useful circular polarimetry has also been obtained with grisms 600R, 1200G, and, very recently, with the grism 600I, which allows to study both the Ca II infrared triplet lines and the hydrogen Paschen lines. We describe here the recent scientific results achieved for studies of stellar magnetic fields using different FORS 1 instrumental settings.

Paper Details

Date Published: 30 June 2006
PDF: 8 pages
Proc. SPIE 6269, Ground-based and Airborne Instrumentation for Astronomy, 62692Q (30 June 2006); doi: 10.1117/12.670709
Show Author Affiliations
S. Hubrig, European Southern Observatory (Chile)
T. Szeifert, European Southern Observatory (Chile)
M. Schöller, European Southern Observatory (Chile)
R. Schnerr, Univ. of Amsterdam (Netherlands)
Ctr. for High Energy Astrophysics (Netherlands)

Published in SPIE Proceedings Vol. 6269:
Ground-based and Airborne Instrumentation for Astronomy
Ian S. McLean; Masanori Iye, Editor(s)

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