Astrophysics (Index)About

stellar atmosphere

(stellar envelope)
(photosphere and above)

A stellar atmosphere (or stellar envelope) is the gas/plasma around the star. The border between the atmosphere and the rest of the star is taken to be the lowest region where the light emitted by the star is produced, which by definition is the lower edge of the photosphere. The rest of the atmosphere above it are the chromosphere, the corona (region of plasma surrounding a star that emits electromagnetic radiation), and the transition region between the chromosphere and the corona. This is the structure of the Sun's atmosphere and only limited information is available to confirm this regarding other stars.

Further reading:

Referenced by pages:
carbon star (C)
common envelope
computational astrophysics
Rosseland mean opacity
scale height (H)
stellar model atmosphere
stellar structure
stellar wind
Zeeman-Doppler imaging (ZDI)