Hydrodynamical simulations of convection-related stellar micro-variability - II. The enigmatic granulation background of the CoRoT target HD 49933H.-G. Ludwig, R. Samadi, M. Steffen, T. Appourchaux, F. Baudin, K. Belkacem, P. Boumier, M.-J. Goupil and E. MichelA&A, 506 1 (2009) 167-173DOI: https://doi.org/10.1051/0004-6361/200911930