Magnetic topology and surface differential rotation on the K1 subgiant of the RS CVn system HR 1099

P. Petit, J. -F. Donati, G. A. Wade +8

We present here spectropolarimetric observations of the RS CVn system HR 1099 (V711 Tau) secured from 1998 February to 2002 January with the spectropolarimeter MuSiCoS at the Teles…