Collisional excitation of O2 by H2: the validity of LTE models in interpreting O2 observationsF. Lique, Y. Kalugina, S. Chefdeville, S. Y. T. van de Meerakker, M. Costes and C. NaulinA&A, 567 (2014) A22DOI: https://doi.org/10.1051/0004-6361/201423957