javv-e setâre-yi, havâsephre ~
Fr.: atmosphère stellaire
The outer envelope of gas and plasma that surrounds a star; characterized by pressure, temperature, density, chemical composition, and opacity at varying altitudes.
stellar atmosphere model
model-e javv-e setâré
Fr.: modèle d'atmosphère stellaire
A model that computes the radiation field crossing the boundary layers of a star at all frequencies. The parameters used for the characterization of a stellar atmosphere model are: → effective temperature, → surface gravity, and → metallicity.