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What is a spectral class of a star?
AstronomyStellar Classification
Quick Answer
A star’s spectral class is a category based on its temperature and the lines seen in its spectrum. The main classes are O, B, A, F, G, K, and M.
The Full Story
Spectral classification groups stars by the patterns in their light, which reveal surface temperature and chemical features. The modern OBAFGKM sequence orders stars from hottest to coolest, though there are additional categories for special cases. This system is used with the Hertzsprung-Russell diagram to understand stellar properties and evolution. The Sun is a G-type star, specifically a G2V star.
Key Facts
1.Main spectral classes are O, B, A, F, G, K, M
2.The Sun is a G-type star
3.Classification is based on a star’s spectrum
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Suggested video title for this topic:
"How a star’s light reveals its temperature and identity"