Discovery of a stellar companion to the nearby solar-analogue HD 104304 C. Schnupp, C. Bergfors, W. Brandner, S. Daemgen, D. Fischer, G. Marcy, Th. Henning, S. Hippler and M. Janson A&A, 516 (2010) A21 Published online: 18 June 2010 DOI: 10.1051/0004-6361/201014740