HR diagram with the stars from previous (circles) and the present (squares and triangles) work. Symbol size scales with projected rotational velocity measured by the FT method. The granulation boundary according to Gray & Nagel (1989) is indicated by the hashed region. Evolutionary tracks for 1.0, 1.5, and 2.0 M _⊙  and the early-main sequence of Siess et al. (2000, solid, Z = 0.02 are added, using bolometric corrections by Kenyon & Hartmann (1995, Table A5). Stars with photometry possibly affected by multiplicity (flags “x” and “m” in Tables 1 and 2) are not included.