Spectral Classes for Main Sequence Stars

Characteristics of Spectral Classes for Main Sequence Stars

ClassColorSurface TemperatureStrong Lines
Oblue-white35,000°Cionized helium
Fcreamy7,000°Cionized calcium
Korange4,500°Ctitanium oxide
Mred3,000°Ctitanium oxide

The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.

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