An Etymological Dictionary of Astronomy and Astrophysics

A member of a class of equations of state used in some models concerned with the evolution of a hypothetical supermassive star. The supermassive star is assumed to consist of a → convective core, which obeys a
→ polytropic law, and an envelope,
which contains most of the whole mass, and follows the hylotropic → equation of state. This equation is expressed by P = A ρ^4/3M^α, where A is a constant, ρ the density, M the mass, and α an index.
First introduced by Mitchell C. Begelman (2010, MNRAS 402, 673).

See also: From → hylotropic, on the model of → polytrope.