Spatial distribution of far-infrared rotationally excited CH+ and OH emission lines in the Orion Bar photodissociation regionA. Parikka, E. Habart, J. Bernard-Salas, J. R. Goicoechea, A. Abergel, P. Pilleri, E. Dartois, C. Joblin, M. Gerin and B. GodardA&A, 599 (2017) A20DOI: https://doi.org/10.1051/0004-6361/201629445