21st Century Astronomy: The Solar System (Sixth Edition)
6th Edition
ISBN: 9780393691283
Author: Laura Kay; Stacy Palen; George Blumenthal
Publisher: W. W. Norton
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Question
Chapter 19, Problem 1QP
To determine
Among the following which one contributes largest percentage to the total mass of a spiral galaxy.
Expert Solution & Answer
Answer to Problem 1QP
Option (a).
Explanation of Solution
Spiral galaxy is a type of galaxy that is characterized by spiral arms, and these spiral arms lie in flattened and rotating disk. The stars in flat disk orbit the centre of the galaxy in the same direction.
Dark matter contributes largest percentage to the total mass of a spiral galaxy. It contributes upto
The dark matter interacts with the light very weakly, and the nature of the dark matter is yet to be known.
Conclusion:
Since dark matter contributes
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Chapter 19 Solutions
21st Century Astronomy: The Solar System (Sixth Edition)
Ch. 19.1 - Prob. 19.1ACYUCh. 19.1 - Prob. 19.1BCYUCh. 19.2 - Prob. 19.2CYUCh. 19.3 - Prob. 19.3CYUCh. 19.4 - Prob. 19.4CYUCh. 19 - Prob. 1QPCh. 19 - Prob. 2QPCh. 19 - Prob. 3QPCh. 19 - Prob. 4QPCh. 19 - Prob. 5QP
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