A statistical assessment of zero-polarization catalogues

Details A statistical assessment of zero-polarization catalogues A statistical assessment of zero-polarization catalogues

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...269..617c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 269, no. 1-2, p. 617-626.

Astronomy and Astrophysics

Astrophysics

5

Astronomical Catalogs, Optical Polarization, Reference Stars, Statistical Analysis, Error Analysis, Magnetoactivity

Scientific paper

The statistical behavior associated with polarization measurements is presented. The cumulative distribution function for measurements of unpolarized sources normalized by the measurement error is considered and Kolmogorov tests have been applied to data which might be considered as being representative of assemblies of unpolarized stars. Tinbergen's (1979, 1982) and Piirola's I (1977) catalogs have been examined and reveal shortcomings, the former indicating the presence of uncorrected instrumental polarization in part of the data and both suggesting that the quoted errors are in general slightly underestimated. Citings of these catalogs as providing evidence that middle-type stars in general exhibit weak intrinsic polarizations are shown to be invalid.

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