Bonnor-Ebert sphere epehr-e Bonnor-Ebert, kore-ye ~ Fr.: sphère de Bonnor-Ebert A sphere of interstellar gas at uniform temperature in equilibrium under its own gravitation and an external pressure. The pressure of a hotter surrounding medium causes the sphere to collapse. → Bonnor-Ebert mass. → Bonnor-Ebert mass; → sphere. |