BY LETTER
Luminosity Class
In astronomy, the total brightness of a star; the total amount of energy in all wavelengths of light per second.
Yerkes Luminosity Classes | |
| Ia | Very luminous supergiants |
|---|---|
| Ib | Less luminous supergiants |
| II | Luminous giants |
| III | Giants |
| IV | Subgiants |
| V | Main sequence stars (dwarf stars) |
| VI | Subdwarfs |
| VII | White dwarfs |
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Development Notes
Text by M. Alan Kazlev
Initially published on 03 December 2001.
Initially published on 03 December 2001.
