AA,7.56464E-15,Radiation constant (erg/cm^3/K^4)
CC,2.997925E10,Speed of light
GG,6.672E-8,Gravitational constant
XMU,0.5,1/2
XMH,1.660531E-24,Atomic mass (g)
XKB,1.38062E-16,Boltzman constant (erg/K)
RMU,XKB/(XMU*XMH),xkb/xmh (coefficient of gas pres)
XMSUN,1.989E33,Solar mass (g)
XKES,0.34,Electron Scattering Opacity: