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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Chapter 7, Problem 2P
To determine
The diameter of Mare Serenitatis in kilometers.
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Consider the attached light curve for a transiting planet observed by the Kepler mission. If the host star is identical to the sun, what is the radius of
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Brightness of Star
Residual Flux
0.99
0.98
0.97
0.006
0.002
0.000
-8-881
-0.06
-0.04
-0.02
0.00
Time (days) →
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Thinking about the Scale of the Solar System As we discussed, the radius of the Earth is approximately 6370 km. The Sun, on the other hand, is approximately 700,000 km in radius and located, on average, one astronomical unit (1 au=1.5x108 km) from the Earth. Imagine that you stand near Mansueto Library, at the corner of 57th and Ellis. You hold a standard desk globe, which has a diameter of 12 inches, and you want to build a model of the Sun, Earth, and their separation that keeps all sizes and lengths in proportion to one another. a) How big would the Sun be in this scale model? Give your answer in feet and meters. b) The nearest star to the Solar System outside of the Sun is Proxima Centauri, which is approximately 4.2 light years away (a light year is the distance light travels in one year, or approximately 9.5x1012 km). Given the scale model outlined above, how far would a model Proxima Centauri be placed from you? Give your answer in miles and km.
question 1 & 2 please , using 2 AU and the formula
Chapter 7 Solutions
Loose Leaf For Explorations: Introduction To Astronomy
Ch. 7 - Describe a crater and how it is formed. Why do...Ch. 7 - How do the maria differ from the highlands?Ch. 7 - Prob. 3QFRCh. 7 - What formed the maria? Why are they smooth?Ch. 7 - Prob. 5QFRCh. 7 - Prob. 6QFRCh. 7 - Why does the Moon lack an atmosphere?Ch. 7 - Prob. 8QFRCh. 7 - How do astronomers think the Moon formed? What...Ch. 7 - Why is the Moons surface heavily cratered but...
Ch. 7 - Prob. 11QFRCh. 7 - Prob. 12QFRCh. 7 - Prob. 13QFRCh. 7 - Highway surfaces develop potholes over time. How...Ch. 7 - Bergmanns rule states that individuals of a given...Ch. 7 - Prob. 3TQCh. 7 - Why will an astronauts footprint on the Moon last...Ch. 7 - Prob. 5TQCh. 7 - Prob. 6TQCh. 7 - If the day were 12 hours long, what would be the...Ch. 7 - Prob. 8TQCh. 7 - Why do tides happen about an hour later each day?Ch. 7 - Prob. 1PCh. 7 - Prob. 2PCh. 7 - Prob. 3PCh. 7 - Prob. 4PCh. 7 - Prob. 5PCh. 7 - Prob. 6PCh. 7 - Prob. 7PCh. 7 - Prob. 8PCh. 7 - Prob. 9PCh. 7 - Prob. 1TYCh. 7 - Prob. 2TYCh. 7 - Prob. 3TYCh. 7 - Prob. 4TYCh. 7 - Prob. 5TYCh. 7 - Prob. 6TY
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- 1. These images were taken six months apart, first when Earth was as far to one side of Alpha Centauri as it can get and again when Earth was as far to the other side of Alpha Centauri as it can get. Consequently, the baseline between the two observing positions is how many AU across? Answer: 1.7 arcsec 2. First, convert this to kilometers using your measurement of how many kilometers are in an AU. 3. Now convert the baseline to kilometers using the true value for the number of kilometers in an AU. 4. Calculate the distance to Alpha Centauri using parallax and the true baseline in kilometers. 5. Google and record the true value. 6. Calculate your percent error 7. Discuss significant sources of errorarrow_forward(a) The distance to a star is approximately 7.80 1018 m. If this star were to burn out today, in how many years would we see it disappear? years (b) How long does it take for sunlight to reach Saturn?arrow_forward1. These images were taken six months apart, first when Earth was as far to one side of Alpha Centauri as it can get and again when Earth was as far to the other side of Alpha Centauri as it can get. Consequently, the baseline between the two observing positions is how many AU across? Answer: 1.7 arcsec USE 1.7 arcsec NOT 2.946 2. First, convert this to kilometers using your measurement of how many kilometers are in an AU. 3. Now convert the baseline to kilometers using the true value for the number of kilometers in an AU. 4. Calculate the distance to Alpha Centauri using parallax and the true baseline in kilometers. 5. Google and record the true value. 6. Calculate your percent error 7. Discuss significant sources of errorarrow_forward
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