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Why does the spectroscopic parallax method only work for main sequence stars?.
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Why does the spectroscopic parallax method only work for main sequence stars?.

User Hudson Worden
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1 Answer

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Answer:

Only main sequence stars have a well-defined relationship between spectral type and luminosity.

Step-by-step explanation:

Low-mass stars have much longer lifetimes than high-mass stars.

User Rodrigo Gurgel
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