Universe
11th Edition
ISBN: 9781319039448
Author: Robert Geller, Roger Freedman, William J. Kaufmann
Publisher: W. H. Freeman
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Question
Chapter 17, Problem 3Q
To determine
The reason behind the difficulty in measuring the stellar parallax from Earth and also the benefit of taking the measurement from orbit.
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Check out a sample textbook solutionStudents have asked these similar questions
. A star"s position in the sky against distant background objects has shifted by 0.4" in 6 months it returned where it was. what is the stellar parallax p of this star?
Ans. p=0.2"
b. How far is this star from the Sun?
A star has a parallax angle of 0.0270 arcseconds and an apparent magnitude of 4.641. What is the distance to this star? [Answer in parsecs]
What is the absolute magnitude of this star?
Is this star more or less luminous than the Sun? Answer "M" for More luminous or "L" for Less luminous. (HINT: the absolute magnitude of the Sun is 4.8)
What is the luminosity of this star? (HINT: The luminosity of the Sun is 3.85×1026 W.)
What is the parallax of a star that is 150 pc from Earth?
Chapter 17 Solutions
Universe
Ch. 17 - Prob. 1CCCh. 17 - Prob. 2CCCh. 17 - Prob. 3CCCh. 17 - Prob. 4CCCh. 17 - Prob. 5CCCh. 17 - Prob. 6CCCh. 17 - Prob. 7CCCh. 17 - Prob. 8CCCh. 17 - Prob. 9CCCh. 17 - Prob. 10CC
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- What is the advantage of measuring a parallax distance to a star as compared to our other distance measuring methods?arrow_forwardWhat measurements would you make (assuming you have the money, time, & equipment) to determine a star’s surface temperature?arrow_forwardA star is observed to have a parallax of 0.05". If we were to send a radio signal towards this star how much time would it take for the signal to reach the star?arrow_forward
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