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C01

Light and Stellar SpectroscopyModule 4Infer the Physics of a Star
Module 4 / Lesson 17 of 3045 min
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Why Is Stellar Classification More Than Colour?

How do temperature-sensitive line patterns and pressure-sensitive clues become a reproducible stellar class?

Read OBAFGKM and luminosity class as two evidence axes, not a memorized colour list.

Seven stars from hot blue O type to cool red M type above changing absorption-line patterns.
Vastward scientific visualization. Colour suggests temperature, while the spectral pattern supplies the classification evidence.

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