Proceedings of the International Astronomical Union
Since Dr. Harvey has already mentioned the main results of my observations, I want to restrict myself to two topics:
a brief description of the improvements of my method as compared to that used by Stenflo (1973), some puzzeling aspects of my results which might be discussed in this meeting.
The main differences between the two methods of simultaneous Zeeman polarization measurements used by Stenflo (1973) and by myself are based on suggestions by Schröter (1973):
use of three instead of only two differently split lines; use of less temperature sensitive lines; use of model atmospheres instead of a Milne-Eddington model for the calculation of the ‘calibration curves’; observation of selected Ca+K features in order to avoid the statistical method with the scatter-plot diagram.
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