%0 Journal Article
%T Spectropolarimetric study of the classical Cepheid $¦Ç$ Aql: pulsation and magnetic field
%A V. Butkovskaya
%A S. Plachinda
%A D. Baklanova
%A V. Butkovskyi
%J Physics
%D 2013
%I arXiv
%R 10.1017/S1743921313014713
%X We report the results of spectropolarimetric study of the classical Cepheid $\eta$ Aql. We found that the longitudinal magnetic field of $\eta$ Aql sinusoidally varies with the radial pulsation period, while the amplitude $B$, mean field $B_0$, and phases of maximum and minimum field change from year to year. We hypothesize that possible reasons of those variations are stellar axial rotation or dynamo mechanisms.
%U http://arxiv.org/abs/1311.1943v1