Which Possible Factor MOST Seriously Limits the Accuracy of Spectroscopic

question 71

Multiple Choice

Which possible factor MOST seriously limits the accuracy of spectroscopic parallax?

• A) Stars of the same spectral luminosity class can have a range of temperatures.
• B) It is difficult to accurately measure angular displacement for distant stars.
• C) Stars of the same spectral luminosity class can have a range of absolute magnitudes.
• D) It is not possible to accurately classify the spectral luminosity of even a nearby star.

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