Three-dimensional hydrodynamical CO5BOLD model atmospheres of red giant stars - V. Oxygen abundance in the metal-poor giant HD 122563 from OH UV linesD. Prakapavičius, A. Kučinskas, V. Dobrovolskas, J. Klevas, M. Steffen, P. Bonifacio, H.-G. Ludwig and M. SpiteA&A, 599 (2017) A128DOI: https://doi.org/10.1051/0004-6361/201629306