Magnetic field of the classical Cepheid $\eta$ Aql: new results

V. Butkovskaya, S. Plachinda, D. Baklanova +1

We present the results of the spectropolarimetric study of the classical Cepheid $\eta$ Aql in 2002, 2004, 2010, and 2012. The longitudinal magnetic field of $\eta$ Aql was found to be v…