The HARPS search for southern extra-solar planets.XIII. A planetary system with 3 super-Earths (4.2, 6.9, and 9.2 M-Earth)

Kennedy & Kenyon ( 2008 ) study hot super-Earth formation as a function of stellar mass and suggest that, with migration, short period low-mass planets are most likely to

Though certainly not as clearly as for Gl 674 (Bonfils et al. 2007), a plot of the (apparent) radial velocity (after subtraction of the 8.8-day planet) against the H+K spectral

After this preliminary stage of checking significant signals in the data, we searched for the best-fit parameters using a MCMC sampler, and selecting a model composed of a

lack of periodicity of the bisector span, together with the lack of correlation between bisector and radial velocity, and the fact that the orbital period is strictly constant along