Meaning of spectral class | Babel Free
Definitions
A classification of stars depending on their spectra and luminosity; usually one of O, B, A, F, G, K, M.
Equivalents
Examples
“Maji orbits the Vamshi binary giant stars. Vamshi-A is a blue star of spectral class A4III which burns at half again the temperature of Sol. Vamshi-B is an aging red giant of class M5III, over 220 times the size of Sol.”
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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