Time-series Doppler images and surface differential rotation of the effectively single, rapidly rotating K-giant KU Pegasi
Time-series Doppler images and surface differential rotation of the effectively single, rapidly rotating K-giant KU Pegasi
According to most stellar dynamo theories, differential rotation (DR) plays a crucial role for the generation of toroidal magnetic fields. Numerical models predict surface differential rotation to be anti-solar for rapidly-rotating giant stars, i.e., their surface angular velocity could increase with stellar latitude. However, surface differential rotation has been derived …