A polarimetric investigation of the eclipsing binary XY Ursae Majoris

Details A polarimetric investigation of the eclipsing binary XY Ursae Majoris A polarimetric investigation of the eclipsing binary XY Ursae Majoris

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977ap%26ss..52..351g&link_type=abstract

Astrophysics and Space Science, vol. 52, no. 2, Dec. 1977, p. 351-356.

Astronomy and Astrophysics

Astrophysics

12

Eclipsing Binary Stars, Polarimetry, Polarized Light, Light Curve, Stellar Envelopes, Stellar Luminosity, Stellar Magnetic Fields, Stellar Radiation

Scientific paper

Results are reported for polarimetric observations of the short-period eclipsing binary XY UMa, which were performed in the V band over a complete light-curve cycle. No orbital phase-dependent variation of the polarization greater than 0.2% is found, but orbital phase-dependent scatter of the Stokes parameters is detected along with a periodicity equal to half the orbital period. It is concluded that the observed light-curve asymmetries and system brightness variations cannot be attributed to a circumstellar envelope or a strong general magnetic field in the binary system, but that a star-spot model could account for the observations.

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