The Variability of Polarized Standard Stars

Details The Variability of Polarized Standard Stars The Variability of Polarized Standard Stars

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..364..529b&link_type=abstract

The Future of Photometric, Spectrophotometric and Polarimetric Standardization, ASP Conference Series, Vol. 364, Proceedings of

Astronomy and Astrophysics

Astronomy

2

Scientific paper

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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