Astronomy and Astrophysics – Astrophysics
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000a%26a...358..572m&link_type=abstract
Astronomy and Astrophysics, v.358, p.572-574 (2000)
Astronomy and Astrophysics
Astrophysics
Instrumentation: Polarimeters, Methods: Observational, Techniques: Polarimetric, Stars: Individual: Theta 1, Ori C Stars: Magnetic Fields, Stars: Early-Type
Scientific paper
Recently, Donati & Wade (1999) have claimed rather spectacular, large, variable circular polarisation in the optical continuum of Theta 1 Orionis C, obtained with the échelle spectropolarimeter MuSiCoS. However, based on experience with the William-Wehlau spectropolarimeter, a similar unit using two fiber feeds, we suggest that this is the spurious result of instrumental effects. We propose a remedy to eliminate the effect.
Eversberg Thomas
Moffat Anthony F. J.
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