Circumbinary molecular rings around young stars in Orion Zapata, L. A. Zapata, P. T. P. Ho, L. F. Rodríguez, P. Schilke and S. Kurtz A&A, 471 3 (2007) L59-L62 Published online: 16 July 2007 DOI: 10.1051/0004-6361:20077782