Δ ln L distribution of the different parameters of interest following the MCMC procedure. The zero level is set at the best-fit ln L of the model including only the GPQP term (see Table 4). We show the 0.1 and 1% FAP level calculated by bootstrap randomization using a single Keplerian model (Sect. 4.2) by the black horizontal lines. The black vertical lines in each image indicate the median value and the rms of each parameter considering the solutions below the 1% FAP level. Whereas the green dots indicate all solutions, we plot in red every 1000, and in yellow every 10 000 solutions, in order to get an insight on the density distribution. We note, that for M sin i and a, the uncertainty of the mass of Gl 49 is considered.
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