|detailed stellar models|
The variation of mass, luminosity, temperature, density and pressure
with radius in a model of the Sun. The mass, luminosity and radius
are given in terms of their surface values, and the temperature,
pressure and density in terms of their central values.
The distributions of hydrogen, helium, carbon and nitrogen in a model
of the Sun.
The extent of the convective regions inside stars is shown as a function
of stellar mass. A vertical line in the diagram represents the mass
distribution inside a star of that mass.
`Cloudy' areas indicate convective regions. The solid lines show the mass
values for which the radius is 0.25 and 0.5 of the total radius;
the dashed lines show the masses within which 0.5 and 0.9 of the luminosity