Concept explainers
(a)
The distance to M51 in
Answer to Problem 7Q
Distance in
Explanation of Solution
Given data Distance modulus of the supernova 19941 in M51 =
Distance modulus of the planetary nebulae in M51 =
Distance to Andromeda Galaxy from Earth =
Formula used
Calculation
Conclusion Distance in
(b)
The distance in
Answer to Problem 7Q
Distance in
Explanation of Solution
Given data Distance modulus of the supernova 19941 in M51 =
Distance modulus of the planetary nebulae in M51 =
Distance to Andromeda Galaxy from Earth =
Formula used
Calculation
Conclusion
Distance in
(c)
The difference between the calculated distances in part (a) and part (b).
Answer to Problem 7Q
Difference between the 2 calculated values =
Explanation of Solution
Given data Distance modulus of the supernova 19941 in M51 =
Distance modulus of the planetary nebulae in M51 =
Distance to Andromeda Galaxy from Earth =
Calculation
Conclusion
(d)
Compares differencecalculated value in part c, with the
Answer to Problem 7Q
Explanation of Solution
Given data Distance modulus of the supernova 19941 in M51 =
Distance modulus of the planetary nebulae in M51 =
Distance to Andromeda Galaxy from Earth =
Calculation
Conclusion
It shows that when the distance increase, the error associated with the reading increases as well.
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Chapter 23 Solutions
Universe: Stars And Galaxies
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- What does it mean if one elliptical galaxy has broader spectrum lines than another elliptical galaxy?arrow_forwardThe first clue that the Galaxy contains a lot of dark matter was the observation that the orbital velocities of stars did not decreases with increasing distance from the center of the Galaxy. Construct a rotation curve for the solar system by using the orbital velocities of the planets, which can be found in Appendix F. How does this curve differ from the rotation curve for the Galaxy? What does it tell you about where most of the mass in the solar system is concentrated?arrow_forward
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