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Paper: The Variability of Polarized Standard Stars
Volume: 364, The Future of Photometric, Spectrophotometric, and Polarimetric Standardization
Page: 529
Authors: Bastien, P.; Vernet, E.; Drissen, L.; Menard, F.; Moffat, A.F.J.; Robert, C.; St-Louis, N.
Abstract: In the past, different authors have suspected that many linearly polarized standard stars are actually variable objects. This conclusion has been challenged, at least for some of these observations. We revisit this subject and show that while some care is definitely needed, at least some of the stars suspected to vary in fact do vary. Therefore they should no longer be used as polarized standard stars for precision work. A statistical test, better than those used in the past and based on the cumulative distribution function of the polarization data, is presented in some detail.
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