VbvAstE-001

Chapter 11
Other stars, their
classification and some
cosmology
The Schwarzsprung-Rassel diagram is now a generally accepted base for star classification.
It seems that a classification based on the EOS of substance may be more
justified from physical point of view. It can be emphasized by possibility to determine
the number of classes of celestial bodies.
The matter can totally have eight states (Fig.(11.1)).
The atomic substance at low temperature exists as condensed matter (solid or
liquid). At high temperature it transforms into gas phase.
The electron -nuclear plasma can exist in four states. It can be relativistic or
non-relativistic. The electron gas of non-relativistic plasma can be degenerate (cold)
or non-degenerate (hot). The relativistic electron gas is degenerate at temperature
below T F . Very high temperature can remove the degeneration even for relativistic
electrons (if, certainly, electronic gas was not ultra-relativistic originally).
In addition to that, a substance can exist as neutron matter with the nuclear
density approximately.
At present, assumptions about existence of matter at different states, other than
the above-named, seem unfounded. Thus, these above-named states of matter show a
possibility of classification of celestial bodies in accordance with this dividing.
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