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luminosity class

American

noun

Astronomy.

a classification of stars of a given spectral type according to their luminosity, breaking them down into dwarfs, giants, and supergiants.

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luminosity class

Estimating the luminosity class of an M star is much more important than measuring it for an O star if you are determining the distance to that star.

From Textbooks ● Oct. 13, 2016

What are the luminosity class and spectral type of a star with an effective temperature of 5000 K and a luminosity of 100 LSun?

From Textbooks ● Oct. 13, 2016

Spectral classification can therefore be used to estimate the luminosity class of a star as well as its temperature.

From Textbooks ● Oct. 13, 2016

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