Mass versus semi-major axis for stars between 0.1 M_⊙ and 2.0 M_⊙. The α_D parameter is equal to 1.2, and the disk lifetime is shorter for stars more massive than 1.5 M_⊙. 30 000 stars are considered in each panel. First line, from left to right, masses between 0.1 M_⊙ and 0.5 M_⊙, second line, from left to right, masses between 0.6 M_⊙ and 1.0 M_⊙, third line, from left to right, masses between 1.1 M_⊙ and 1.5 M_⊙ fourth line, from left to right, masses between 1.6 M_⊙ and 2.0 M_⊙.