Universe: Stars And Galaxies
6th Edition
ISBN: 9781319115098
Author: Roger Freedman, Robert Geller, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 8, Problem 41Q
To determine
The combination of method which are required to determine the average density of an exoplanet.
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The transit method is used to detected exoplanets by measuring the reduced starlight caused by the planet passing in front of its host star. Say you measure multiple transits of the same exoplanet. What does the time in between the transits represent?
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Chapter 8 Solutions
Universe: Stars And Galaxies
Ch. 8 - Prob. 1QCh. 8 - Prob. 2QCh. 8 - Prob. 3QCh. 8 - Prob. 4QCh. 8 - Prob. 5QCh. 8 - Prob. 6QCh. 8 - Prob. 7QCh. 8 - Prob. 8QCh. 8 - Prob. 9QCh. 8 - Prob. 10Q
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- What revisions to the theory of planet formation have astronomers had to make as a result of the discovery of exoplanets?arrow_forwardUse this light curve of a star with a transiting exoplanet to answer the following. If the exoplanet is orbiting a star identical to our own Sun, what is its average orbital distance, in AU? What is the period in years of the transiting exoplanet? Use this light curve of a star with a transiting exoplanet to answer the following questions. Brightness 0 V V V B 5 10 15 20 Time (months) 25 30 35arrow_forwardDescribe the Doppler Method of searching for exoplanets.arrow_forward
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- Imagine a trans-Neptunian object with roughly the same mass as Earth but located 50 AU from the sun. a) based on the solar nebula theory, what do you think this object would be made of and why? b) on the basis of speculation, assume a reasonable density for this object and calculate its diameter in units of Earth radii.arrow_forwardGiven what you know about the solar nebula theory, how likely is it that additional solar systems will yield inhabited planets? Visit NASA's Kepler mission and write a half-page description of the project.arrow_forwardIf you stood on Earth during its formation, during which it captured about 1.5 x 10^11 particles per second, and watched a region covering 320 m^2, how many impacts would you expect to see in an hour? (Notes: The surface area of a sphere is 4pier^2. Hint: Assume that the Earth has its current radius of 6,378 km.) ______ impactsarrow_forward
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