Location in the Hertzsprung-Russell (H-R) diagram for 0.085  M _☉ < M < 1  M _☉ stars as they arrive at the main sequence for Y = 0.275 and Z = 0.019. The mass of the star is noted by the values at the bottom of the line. The dashed blue lines are isochrones for ages of 3, 10, 30, 100 and 300 Myr, as noted to the right. The purple squares (red circles) show where D ( ⁷Li) is depleted by a factor of 100. The green triangles show the ZAMS.