; Constants

K_BOLTZ = 1.38d-16
G_GRAV = 6.67d-8
U_ATOM = 1.66d-24
SIGMA_STEF = 5.67d-5
C_LIGHT = 2.9979D10
SIGMA_EL = 0.7D-24

M_EL = 9.10938D-28
H_PLANCK = 6.626D-27

M_SUN = 1.989d33
R_SUN = 6.96d10
L_SUN = 3.847d33

EV_TO_ERG = 1.602D-12