H‐R diagram with program stars. Heavy solid lines show evolutionary tracks at 1.5 M_⊙ (bottom right), 2, 2.5, 3, 3.5, and 4 M_⊙ (across the top). Time steps are shown at the zero‐age main sequence (light solid line running from top left to bottom right), 50 Myr (dashed line), 100 Myr (solid line), 150 Myr (dashed line), 200 Myr (solid line), 250 Myr (dashed line), 300 Myr (solid line), 350 Myr (dashed line), 400 Myr (solid line), 500 Myr (dashed line), 600 Myr (solid line), 700 Myr (dashed line), and 800 and 1000 Myr (solid line). Large open boxes show stars from our sample with ages from cluster and moving group membership that are less than 80 Myr. Open circles show additional members of the U Sco association with an age of ~5 Myr. Open triangles show stars from our sample with ages between 80 and 200 Myr, and open diamonds show stars with ages greater than 200 Myr, all determined from cluster and moving group membership. Small open squares represent ages from the literature. Small filled squares represent program stars for which we used location on the H‐R diagram to estimate ages.