Planetary mass distribution against the mass of the host star. Filled red circles represent planetary systems orbiting intermediate-mass stars while blue filled circle indicates planet around HD 208897. Planets around less massive evolved intermediate-mass (1.0 M_⊙ <M_∗ < 1.3 M_⊙) and metal-rich ([Fe/H] > 0) stars are plotted with green circles. Dashed and dotted lines correspond to the velocity semi-amplitude of 40 and 20 m s^-1 for a host star, respectively, imparted by a planet at 1 AU.