Universe
Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Chapter 19, Problem 33Q

(a)

To determine

The time period of a Cepheid star whose brightness varies from maximum to minimum in 26 days and after 4 more days, it achieves its maximum value again.

(b)

To determine

The luminosity of the star whose brightness varies from maximum to minimum in 26 days and after 4 more days, it achieves its maximum value again using the figure given below.

Universe, Chapter 19, Problem 33Q

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