INSTANT ACCESS FOR LIFE IN THE UNIVERSE
4th Edition
ISBN: 9780134081670
Author: Bennett
Publisher: PEARSON
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Chapter 11, Problem 57IF
Transit of TrES-1. The planet TrES-1, orbiting a distant star, has been detected by both the transit and the Doppler method, so we can calculate its density and get an idea of what kind of planet it is.
- a. Using the method of Cosmic Calculations 11.3, calculate the radius of the transiting planet. The planetary transits block 2% of the star’s light. The star TrES-1 has a radius of about 85% of our Sun’s radius.
- b. The mass of the planet is approximately 0.75 times the mass of Jupiter, and Jupiter’s mass is about 1.9 × 1027 kilograms. Calculate the average density of the planet. Give your answer in grams per cubic centimeter. Compare this density to the average densities of Saturn (0.7 g/cm3) and Earth (5.5 g/cm3). Is the planet terrestrial or jovian in nature? (Hint: To find the volume of the planet, use the formula for the volume of a sphere:
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Chapter 11 Solutions
INSTANT ACCESS FOR LIFE IN THE UNIVERSE
Ch. 11 - Prob. 1RQCh. 11 - Prob. 2RQCh. 11 - Prob. 3RQCh. 11 - How do habitable zones differ among stars of...Ch. 11 - Briefly describe the conditions under which...Ch. 11 - Why are extrasolar planets hard to detect...Ch. 11 - Briefly describe the astrometric, Doppler, and...Ch. 11 - Briefly summarize the planetary properties we can...Ch. 11 - Why does the Doppler method generally allow us to...Ch. 11 - How does the transit method tell us planetary...
Ch. 11 - How do the orbits of known extrasolar planets...Ch. 11 - Summarize the key features shown in Figure 11.20,...Ch. 11 - According to current statistics, how common arc...Ch. 11 - What types of worlds seem most likely to support...Ch. 11 - How might a stars habitable zone be wider than we...Ch. 11 - How might future imagery and spectroscopy allow us...Ch. 11 - Prob. 17RQCh. 11 - Prob. 18RQCh. 11 - What is the HertzsprungRussell diagram? How does a...Ch. 11 - Prob. 20RQCh. 11 - Date: February 16, 2025. Headline: Astronomers...Ch. 11 - Prob. 22TYUCh. 11 - Date: June 19, 2028. Headline: Spectrum Reveals...Ch. 11 - Date: November 7, 2020. Headline: New Images Show...Ch. 11 - Date: November 7, 2050. Headline: New Images Show...Ch. 11 - Date: July 20, 2020. Headline: Giant Planet Found...Ch. 11 - Date: September 15, 2045. Headline: Sun-Like Star...Ch. 11 - Prob. 28TYUCh. 11 - Date: December 13, 2033. Headline: Orphan Planet...Ch. 11 - Prob. 30TYUCh. 11 - Prob. 31TYUCh. 11 - Prob. 32TYUCh. 11 - Which method could detect a planet in an orbit...Ch. 11 - To determine a planets average density, we can use...Ch. 11 - Based on the model types shown in Figure 11.20, a...Ch. 11 - According to current statistics, about what...Ch. 11 - The term super-Earth means a planet that is (a)...Ch. 11 - Our best hope for determining that life exists on...Ch. 11 - Jupiter has had an important effect on life on...Ch. 11 - Prob. 40TYUCh. 11 - Prob. 41POSCh. 11 - Unanswered Questions. As discussed in this...Ch. 11 - Explaining the Doppler Method. Explain how the...Ch. 11 - Explaining the Transit Method. Explain how the...Ch. 11 - Comparing Methods. What are the strengths and...Ch. 11 - Super-Earth. Youve discovered a super-Earth...Ch. 11 - Stars with Habitable Planets. Based on what youve...Ch. 11 - Are Earth-Like Planets Common? Based on what you...Ch. 11 - Prob. 50IFCh. 11 - Science Fiction Planet. Choose one fictional...Ch. 11 - Number of Stars with Habitable Planets. Assume...Ch. 11 - Prob. 54IFCh. 11 - Finding Orbit Sizes. The Doppler method allows us...Ch. 11 - Finding a Planetary Mass. Using the Doppler...Ch. 11 - Transit of TrES-1. The planet TrES-1, orbiting a...Ch. 11 - The Doppler Formula. The amount of Doppler shift...Ch. 11 - Prob. 59IFCh. 11 - Future Mission. Imagine that a wealthy benefactor...Ch. 11 - Is It Worth It? Thanks to rapidly advancing...Ch. 11 - Prob. 62IFCh. 11 - Extrasolar Planet Mission. Learn about a proposed...
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