The mass of synthetic planets (in Jupiter masses M_J) as a function of metallicity for the nominal population (small dots). In the plot, lines indicate approximatively the region of high mass and low metallicity where no synthetic giant planets are found in other non-nominal populations: with an ice line fixed to 2.7 AU (dotted line), or with the effect of gap formation on the gas accretion rate modeled as in Veras & Armitage (2004) (solid line). The dashed line shows the limit given in Fischer & Valenti (2005).