The Cosmic Perspective (9th Edition)
9th Edition
ISBN: 9780134874364
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 13, Problem 47EAP
To determine
To Describe: The view of the planet orbiting star HD 189733 from the above and its comparison with Jupiter’s atmosphere.
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White Dwarf Size II. The white dwarf, Sirius B, contains 0.98 solar mass, and its density is about 2 x 106 g/cm?. Find the radius of the white dwarf in km to three significant digits. (Hint: Density = mass/volume, and the volume of a
4
sphere is Tr.)
3
km
Compare your answer with the radii of the planets listed in the Table A-10. Which planet is this white dwarf is closely equal to in size?
I Table A-10 I Properties of the Planets
ORBITAL PROPERTIES
Semimajor Axis (a)
Orbital Period (P)
Average Orbital
Velocity (km/s)
Orbital
Inclination
Planet
(AU)
(106 km)
(v)
(days)
Eccentricity
to Ecliptic
Mercury
0.387
57.9
0.241
88.0
47.9
0.206
7.0°
Venus
0.723
108
0.615
224.7
35.0
0.007
3.4°
Earth
1.00
150
1.00
365.3
29.8
0.017
Mars
1.52
228
1.88
687.0
24.1
0.093
1.8°
Jupiter
5.20
779
11.9
4332
13.1
0.049
1.30
Saturn
9.58
1433
29.5
10,759
9.7
0.056
2.5°
30,799
60,190
Uranus
19.23
2877
84.3
6.8
0.044
0.8°
Neptune
* By definition.
30.10
4503
164.8
5.4
0.011
1.8°
PHYSICAL PROPERTIES (Earth = e)…
H5.
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.
Follow up observations of the star in part reveal that a spectral feature with a rest wavelength of 656 nm is redshifted by 1.41×10−3 nm with the same period as the observed transit. Assuming a circular orbit what can be inferred about the planet’s mass (expressed in Jupiter masses)?
The planet Uranus was discovered in 1781, and Neptune, the next planet outward from the Sun, was discovered in 1846. Imagine you're an astronomer in 1846, and you start wondering if there's another planet out beyond Neptune. You decide to try and discover its existence using the same method that was used for Neptune. How will you do this?
Group of answer choices
You'll recruit a large number of astronomers to use their telescopes to carefully scan the sky in directions that are far from the ecliptic. The regions around the north and south celestial poles will probably be the best "hunting grounds" for the new planet.
You'll examine Uranus and Neptune very carefully, on every clear night, for several years, to see if you can find any evidence that sunlight has been reflected off of the `new' planet, then off of Uranus or Neptune, before arriving on Earth.
On rare occasions when Neptune passes in front of the Sun, as seen from Earth, you'll look carefully at the Sun (with a safe…
Chapter 13 Solutions
The Cosmic Perspective (9th Edition)
Ch. 13 - Prob. 1VSCCh. 13 - Prob. 2VSCCh. 13 - Prob. 3VSCCh. 13 - Prob. 4VSCCh. 13 - Prob. 5VSCCh. 13 - I. Why are extrasolar planets hard to detect...Ch. 13 - 2. What are the two major approaches to detecting...Ch. 13 - 3. How can gravitational lugs from orbiting...Ch. 13 - Prob. 4EAPCh. 13 - Briefly describe Ihe Doppler method. Summarize the...
Ch. 13 - How does the transit method work’ What was the...Ch. 13 - Prob. 7EAPCh. 13 - Prob. 8EAPCh. 13 - Prob. 9EAPCh. 13 - Prob. 10EAPCh. 13 - Prob. 11EAPCh. 13 - Prob. 12EAPCh. 13 - Prob. 13EAPCh. 13 - Prob. 14EAPCh. 13 - Prob. 15EAPCh. 13 - Prob. 16EAPCh. 13 - Prob. 17EAPCh. 13 - Prob. 18EAPCh. 13 - Prob. 19EAPCh. 13 - Decide whether the statement makes sense lor is...Ch. 13 - Prob. 21EAPCh. 13 - Prob. 22EAPCh. 13 - Prob. 23EAPCh. 13 - Prob. 24EAPCh. 13 - Decide whether the statement makes sense lor is...Ch. 13 - Prob. 26EAPCh. 13 - Prob. 27EAPCh. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - Choose Lhe best ansuter to each of the following....Ch. 13 - When is a Theory Wrong? As discussed in this...Ch. 13 - Prob. 40EAPCh. 13 - Prob. 42EAPCh. 13 - Prob. 43EAPCh. 13 - Comparing Methods. What are the strengths and...Ch. 13 - No Hot Jupiters Here. How do we think hot Jupiters...Ch. 13 - Prob. 46EAPCh. 13 - Prob. 47EAPCh. 13 - Lost in the Glare. This exercise helps you...Ch. 13 - Transit of TrES-1. The planet TrES-1, orbiting a...Ch. 13 - Planet Around 51 Pegasi. The star 51 Pegasi has...Ch. 13 - Identical Planets? Imagine two planets orbiting a...
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