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Astronomy 100 Name: Homework 7 Due Friday, November 22, 2013 at 5 p.m., either electronically or on paper. 1. How does solar nebula theory explain the dramatic density difference between the terrestrial and Jovian planets? 2. Why are carbonaceous chondritic meteorites thought to be the oldest pristine material from the inner solar system? 3. How does the Doppler shift allow us to discover extrasolar planets? Specifically, what light are we looking at, when an extrasolar planet is discovered using the Doppler shift? 4. For stars, what does luminosity measure that is different from what absolute visual magnitude measures? 5. Examine the following table of made-up stars and their properties: Star Arya Bran Catelyn Daenerys Eddard Spectral type G2 V B1 V G2 Ib M5 III DZ mv 5 8 10 19 15 Which star is the brightest in apparent magnitude? Which star is most luminous? Which star is the largest star? Which star is furthest away? For each choice, state the information from the table that was most useful in making the choice. 6. How can Kepler’s Third Law be used to figure out the combined masses of two stars in a binary system?