Bands of solid CO in the 2-3μm spectrum of S 140:IRS1 J. V. Keane, A. C. A. Boogert, A. G. G. M. Tielens, P. Ehrenfreund and W. A. Schutte A&A, 375 3 (2001) L43-L46 Published online: 15 September 2001 DOI: 10.1051/0004-6361:20010977