Loose Leaf For Explorations: Introduction To Astronomy
9th Edition
ISBN: 9781260432145
Author: Thomas T Arny, Stephen E Schneider Professor
Publisher: McGraw-Hill Education
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If you could visit another planetary system while the planets are forming, would you expect to see the condensation sequence at work, or do you think that process was most likely unique to our Solar System? How do the properties of the extrasolar planets discovered so far affect your answer?
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A star with mass 1.05 M has a luminosity of 4.49 × 1026 W and effective temperature of 5700 K. It dims to 4.42 × 1026 W every 1.39 Earth days due to a transiting exoplanet. The duration of the transit reveals that the exoplanet orbits at a distance of 0.0617 AU. Based on this information, calculate the radius of the planet (expressed in Jupiter radii) and the minimum inclination of its orbit to our line of sight.
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уears
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Chapter 8 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 8 - Name the eight planets in order of increasing...Ch. 8 - (8.1) What is Pluto, and why isnt it a planet?Ch. 8 - Where are the asteroid belt, the Kuiper belt, and...Ch. 8 - Prob. 4QFRCh. 8 - Prob. 5QFRCh. 8 - Prob. 6QFRCh. 8 - What properties, apart from position, distinguish...Ch. 8 - How old is the Solar System? How do we know?Ch. 8 - Prob. 9QFRCh. 8 - Prob. 10QFR
Ch. 8 - Prob. 11QFRCh. 8 - Prob. 12QFRCh. 8 - Prob. 13QFRCh. 8 - Prob. 14QFRCh. 8 - Prob. 15QFRCh. 8 - Prob. 16QFRCh. 8 - Prob. 17QFRCh. 8 - Prob. 18QFRCh. 8 - Prob. 19QFRCh. 8 - Prob. 20QFRCh. 8 - Prob. 21QFRCh. 8 - Prob. 22QFRCh. 8 - Prob. 1TQCh. 8 - Prob. 2TQCh. 8 - Prob. 3TQCh. 8 - Prob. 4TQCh. 8 - By what factor would the Sun be shrunk to be the...Ch. 8 - (8.1) Calculate the densities of Venus and Jupiter...Ch. 8 - Look up the masses and radii of Mercury and...Ch. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - Prob. 7PCh. 8 - Prob. 8PCh. 8 - Prob. 1TYCh. 8 - Prob. 2TYCh. 8 - Prob. 3TYCh. 8 - Prob. 4TYCh. 8 - Prob. 5TYCh. 8 - The numerous craters we see on the solid surfaces...Ch. 8 - Prob. 7TY
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- Describe the Doppler Method of searching for exoplanets.arrow_forward9) An interstellar cloud fragment 0.2 light-year in diameter is rotating at a rate of one revolution per million years. It now begins to collapse. Assuming that the mass remains constant, estimate the cloud's rotation period when it has shrunk to (a) the size of the solar nebula, 100 AU across, and (b) the size of Earth's orbit, 2 AU across. (answers: 0.016 revolutions per year, and an orbital period of 62.5 years, This is 40 revolutions per year, and an orbital period of 0.025 years, or just a little over 9 days)arrow_forwardWhen astronomers found the first giant planets with orbits of only a few days, they did not know whether those planets were gaseous and liquid like Jupiter or rocky like Mercury. The observations of HD 209458 settled this question because observations of the transit of the star by this planet made it possible to determine the radius of the planet. Use the data given in the text to estimate the density of this planet, and then use that information to explain why it must be a gas giant.arrow_forward
- If a star must remain on the main sequence for at least 4 billion years for life to evolve to intelligence, what is the most massive a star that can form and still possibly harbor intelligent life on one of its exoplanets? (Hints: Use the formula for stellar life expectancies, Eq. 121, and data in Appendix Table A-7.)arrow_forwardDescribe the solar nebula, and outline the sequence of events within the nebula that gave rise to the planetesimals.arrow_forwardWhere would you look for some “original” planetesimals left over from the formation of our solar system?arrow_forward
- Planetary migration is a new process that has been added to the nebular theory of solar system formation. What type of planet, that does not exist in our solar system, made this change to the theory necessary? super-Earths Jovian planets beyond the "frost line" mini-Neptunes O hot Jupiters terrestrial planets in the habitable zonearrow_forward1) How massive would Earth had been if it had accreted hydrogen compounds in addition to the sme properties listed in table 7.1? (Assume the same properties of the ingredients as listed in the table) 2) Now imagine that Earth had been able to capture hydrogen and helium gas in the same proportions as listed in the table. How massive would it have been?arrow_forwardIf Exoplanets A and B are orbiting their host stars at similar distances and we know that the host star for exoplanet A emits peak radiation at 400 nm, while the radiation at exoplanet B’s star peaks at 1920 nm, in the absence of other information, which exoplanet would be warmer, and why?arrow_forward
- What is an exoplanet? Group of answer choices A planet in our solar system beyond Pluto. Any planet with extra-terrestrial life. A planet in an extra-solar star system outside of our solar system. Objects in the solar system such as Pluto that were once considered planets but no longer are.arrow_forwardThe NASA Kepler mission detected a transiting planet that blocks 1.3% of the stars light and the host star has a radius 82% of the Sun's radius (the Sun has a radius of 700,000 km) what is the radius of the exosolar planet in km?arrow_forwardWe think the terrestrial planets formed around solid “seeds” that later grew over time through the accretion of rocks and metals. a) Suppose the Earth grew to its present size in 1 million years through the accretion of particles averaging 100 grams each. On average, how many particles did the Earth capture per second, given that the mass of the Earth is = 5.972 × 10 ^24 kg ? b) If you stood on Earth during its formation and watched a region covering 100 m^2, how many impacts would you expect to see in one hour. Use the impact rate you calculated in part a. You’ll need the following as well: the radius of the Earth is = 6.371 × 10 ^6 m and the surface area of the Earth is 4??^2Eartharrow_forward
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