First detection of CO in Uranus Th. Encrenaz, E. Lellouch, P. Drossart, H. Feuchtgruber, G. S. Orton and S. K. Atreya A&A, 413 2 (2004) L5-L9 Published online: 18 December 2003 DOI: 10.1051/0004-6361:20034637