Spectropolarimetric observations of the transiting planetary system of the K dwarf HD 189733 C. Moutou, J.-F. Donati, R. Savalle, G. Hussain, E. Alecian, F. Bouchy, C. Catala, A. Collier Cameron, S. Udry and A. Vidal-Madjar A&A, 473 2 (2007) 651-660 Published online: 23 July 2007 DOI: 10.1051/0004-6361:20077795