19.9 Review Questions
19.9 Review Questions
Review Questions
Explain how parallax measurements can be used to determine distances to stars. Why can we not make accurate measurements of parallax beyond a certain distance? Suppose you have discovered a new cepheid variable star. What steps would you take to determine its distance? Explain how you would use the spectrum of a star to estimate its distance. Which method would you use to obtain the distance to each of the following? What are the luminosity class and spectral type of a star with an effective temperature of 5000 K and a luminosity of 100 LSun?
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