The spin axes orbital alignment of both stars within the eclipsing binary system V1143 Cyg using the Rossiter-McLaughlin effectS. Albrecht, S. Reffert, I. Snellen, A. Quirrenbach and D. S. MitchellA&A, 474 2 (2007) 565-573DOI: https://doi.org/10.1051/0004-6361:20077953
