Solid black lines show
T
c vs. ρ
c during the evolution. Each line is labeled on the left by the mass in units of
M
J. The dotted red lines show constant values of log (age[yr]), labeled at the base of each line. The blue dashed lines show
fixed values of
S/(
N
A
k
B), labeled at the top of each line. The large black dots show the position of maximum
T
c along the evolutionary track.