The Celestial Sphere

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spectrum of Sun
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stellar spectra
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• The Hertzsprung-Russel diagram
• a.k.a. HR diagram
• Vertical axis L
• Horiz. axis Ts

color of the star
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stellar spectra
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stellar spectra
Hydrogen 2 - 6
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stellar spectra
Hydrogen 2 - 6
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• The Hertzsprung-Russel diagram
• a.k.a. HR diagram
• Vertical axis L
• Horiz. axis Ts

color of the star
11

• The Hertzsprung-Russel diagram
• a.k.a. HR diagram
• Vertical axis L
• Horiz. axis Ts

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• The Hertzsprung-Russel diagram
• a.k.a. HR diagram
• Vertical axis L
• Horiz. axis Ts

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AST1209.jpg
do all B5 stars have the same spectrum?
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Spectra of two stars with Ts 13,400 K
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(No Transcript)