Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Question
Chapter 22, Problem 4CC
To determine
The location at which the most recently formed stars, in the galaxy, can be viewed.
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Stars formed after the Big Bang had cooled down. From globular cluster dating and from stellar uranium spectrum, what is the approximate age of the oldest known stars?
6,000 years
4.6 billion years
7 billion years
12 billion years
13.8 billion years
Which of the following is least reasonable regarding stars on a Hertzsprung-Russell diagram?
1)Stars with the largest radii are found in the upper right of the diagram.
2) Red giants are found in the upper right of the diagram.
3)White dwarfs are found in the lower left of the diagram.
4) On the main sequence, the mass of stars generally increases to the right.
Which of the following is not correct regarding Cepheid variable stars.
They can be measure out to ~ 80 Million light years
Once the period is measured, the luminosity is known
Early 1900s astronomers used them to map out our galaxy more accurately.
All of them have about the same luminosity; knowing their apparent magnitude allows us to calculate the distance.
Chapter 22 Solutions
Universe
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Ch. 22 - Prob. 11CCCh. 22 - Prob. 12CCCh. 22 - Prob. 13CCCh. 22 - Prob. 14CCCh. 22 - Prob. 1CLCCh. 22 - Prob. 2CLCCh. 22 - Prob. 1QCh. 22 - Prob. 2QCh. 22 - Prob. 3QCh. 22 - Prob. 4QCh. 22 - Prob. 5QCh. 22 - Prob. 6QCh. 22 - Prob. 7QCh. 22 - Prob. 8QCh. 22 - Prob. 9QCh. 22 - Prob. 10QCh. 22 - Prob. 11QCh. 22 - Prob. 12QCh. 22 - Prob. 13QCh. 22 - Prob. 14QCh. 22 - Prob. 15QCh. 22 - Prob. 16QCh. 22 - Prob. 17QCh. 22 - Prob. 18QCh. 22 - Prob. 19QCh. 22 - Prob. 20QCh. 22 - Prob. 21QCh. 22 - Prob. 22QCh. 22 - Prob. 23QCh. 22 - Prob. 24QCh. 22 - Prob. 25QCh. 22 - Prob. 26QCh. 22 - Prob. 27QCh. 22 - Prob. 28QCh. 22 - Prob. 29QCh. 22 - Prob. 30QCh. 22 - Prob. 31QCh. 22 - Prob. 32QCh. 22 - Prob. 33QCh. 22 - Prob. 34QCh. 22 - Prob. 35QCh. 22 - Prob. 36QCh. 22 - Prob. 37QCh. 22 - Prob. 38QCh. 22 - Prob. 39QCh. 22 - Prob. 40QCh. 22 - Prob. 41QCh. 22 - Prob. 42QCh. 22 - Prob. 43QCh. 22 - Prob. 44QCh. 22 - Prob. 45QCh. 22 - Prob. 46QCh. 22 - Prob. 47QCh. 22 - Prob. 48QCh. 22 - Prob. 49QCh. 22 - Prob. 50Q
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- A friend of yours who did not do well in her astronomy class tells you that she believes all stars are old and none could possibly be born today. What arguments would you use to persuade her that stars are being born somewhere in the Galaxy during your lifetime?arrow_forwardConsider the following data on four stars: Which star would have the largest radius? Which star would have the smallest radius? Which star is the most common in our area of the Galaxy? Which star is the least common?arrow_forwardWhat two forces work against each other to stabilize a star?arrow_forward
- You observe two randomly chosen stars 10,000 lightyears from Earth. One is in the disk of the Milky Way, the other in a direction perpendicular out of the disk. Compare the likely luminosity, doppler shift, metallicity, age, and color of these two stars.arrow_forwardExplain why the abundances of heavy elements in stars correlate with their positions in the Galaxy.arrow_forwardDescribe what a typical star in the Galaxy would be like compared to the Sun.arrow_forward
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