SIMBAD references

Polarimetric data of φ Per from recent observations with the HPOL spectropolarimeter and from an earlier study in the literature have been compared. It is shown that for measurements with accuracies {DELTA}p∼0.003%, temporal changes are readily detected, these seemingly being unrelated to periodic changes in scattering geometry associated with the binary nature of the star. From studies of the p(λ) measurements, the global intrinsic polarization has been separated from the superimposed interstellar component. The wavelength dependence of the sporadic polarization changes suggests that the disks surrounding the component stars may be inclined to the orbital plane of the binary system.