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Hertzsprung-Russell diagram will appear over and over again
in
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class
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Deviations from patterns useful for understanding evolution of
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stars
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Equivalent kinds of plots:
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Luminosity vs. Temperature (what we’ve been showing)
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Absolute Magnitude
vs. Spectral Type (the
“original” H-R
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diagram)
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Apparent Magnitude vs. Spectral Type
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Patterns still the same if all stars are at same difference
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All stars will be shifted vertically by the same amount:
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m-M= -5 + 5 log(d)
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Magnitude vs. Color (called
“color-magnitude diagrams”)
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