... Fitting the observed dependence includes calculations of the polarization cross-sections averaged over particles orientation and size distribution, their normalization and the comparison of obtained dependencies with Serkowski's curve representing observational data for a chosen star. ... Variations of the polarization factors with wavelength are shown in Fig. 16 for homogeneous spheroidal particles with PF orientation. ... The distinction between prolate and oblate spheroids is also clearly seen. ...

Physics of Magnetic Stars, 2007, pp. 262-270 Line profile variability and the possible magnetic field in the spectra of supergiant Leo A.F. Kholtygin1 , G.A. Chountonov2 , S.N. Fabrika2 , T.E. Burlakova Kang Dong-il3 , G.A. Galazutdinov2,4 , M.V. Yushkin2 1 2 2,3 ... Astronomy and Space Science Institute, Optical Astronomy Division, 61-1, Whaam-Dong, YuseongGu, Daejeon, 305-348, Korea 1 Intro duction Line profiles in sp ectra of OB stars are usually strongly variable (Morel et al ...