Spatially resolving the hot CO around the young Be star 51 OphiuchiE. Tatulli, F. Malbet, F. Ménard, C. Gil, L. Testi, A. Natta, S. Kraus, P. Stee and S. Robbe-DuboisA&A, 489 3 (2008) 1151-1155DOI: https://doi.org/10.1051/0004-6361:200809627