Bundle: Foundations of Astronomy, Enhanced, Loose-Leaf Version, 13th + MindTap Astronomy, 2 terms (12 months) Printed Access Card
13th Edition
ISBN: 9781337214353
Author: Seeds, Michael A., Backman, Dana
Publisher: Cengage Learning
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Textbook Question
Chapter 2, Problem 7P
If two stars differ by 8 magnitudes, what is their flux ratio?
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Consider two stars with mV = 2.2 and mV = −1.5. What is their combined visual magnitude? Is the answer plausible.
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Consider two stars with mV = 2.2 and mV = −1.5. What is their combined visual magnitude? Commenton whether your answer is plausible.
Chapter 2 Solutions
Bundle: Foundations of Astronomy, Enhanced, Loose-Leaf Version, 13th + MindTap Astronomy, 2 terms (12 months) Printed Access Card
Ch. 2 - Why are most of the constellations that were...Ch. 2 - Prob. 2RQCh. 2 - Which is the asterism and which is the...Ch. 2 - Prob. 4RQCh. 2 - Prob. 5RQCh. 2 - What does the word apparent mean in apparent...Ch. 2 - Prob. 7RQCh. 2 - Prob. 8RQCh. 2 - Prob. 9RQCh. 2 - Prob. 10RQ
Ch. 2 - Why doesnt a magnitude difference of one mean that...Ch. 2 - Prob. 12RQCh. 2 - In what ways is the celestial sphere a scientific...Ch. 2 - Is the precessing top shown in Figure 2-7a an...Ch. 2 - Prob. 15RQCh. 2 - Where would you need to go on Earth to see the...Ch. 2 - Where would you go on Earth if you wanted to be...Ch. 2 - Your zenith is at your east point and your nadir...Ch. 2 - Why does the number of circumpolar constellations...Ch. 2 - Explain two reasons winter days are colder than...Ch. 2 - How does the date of the beginning of summer in...Ch. 2 - If it is the first day of spring in your...Ch. 2 - It is the first day of summer. Will the days start...Ch. 2 - How much flux from the Sun does the Northern...Ch. 2 - Why does the eccentric shape of Earths orbit make...Ch. 2 - How Do We Know? How can a scientific model be...Ch. 2 - How Do We Know? Why is astrology a pseudoscience?Ch. 2 - Prob. 28RQCh. 2 - How Do We Know? Why must a scientific argument...Ch. 2 - Prob. 1DQCh. 2 - Prob. 2DQCh. 2 - Prob. 3DQCh. 2 - Prob. 4DQCh. 2 - Prob. 5DQCh. 2 - Prob. 1PCh. 2 - Prob. 2PCh. 2 - Prob. 3PCh. 2 - Prob. 4PCh. 2 - Prob. 5PCh. 2 - Prob. 6PCh. 2 - If two stars differ by 8 magnitudes, what is their...Ch. 2 - Prob. 8PCh. 2 - Prob. 9PCh. 2 - By what factor is the full moon brighter than...Ch. 2 - What is the angular distance from the north...Ch. 2 - If you are at latitude 40 degrees north of Earths...Ch. 2 - If you are at latitude 30 degrees north of Earths...Ch. 2 - How many precession periods are in one cycle of...Ch. 2 - Find the Big Dipper in the star trails photograph...Ch. 2 - Prob. 2LTLCh. 2 - Prob. 3LTLCh. 2 - Look at The Sky Around You, item 1a. In the...Ch. 2 - Look at the view from Earth on March 1 in Figure...Ch. 2 - Look at Figure 2-9, shown here. If you see...
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- Consider two identical stars, A and B. Star B is 10 times farther away than star A. What is the difference in magnitudes between the two stars?arrow_forwardWhat is a variable magnitude?arrow_forwardConsider two identical stars, A and B. Star B is 10 times farther away than star A. What is the differencein magnitudes between the two stars?arrow_forward
- 15: 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: 37 16: What is the absolute magnitude of this star? Answer:1.8 17: 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) Answer: M 18: What is the luminosity of this star? (HINT: The luminosity of the Sun is 3.85×1026 W.) Please answer question #18, #15-17 are correct, the photos provide the work for them.arrow_forwardIf two stars differ by 8.6 magnitudes, what is their flux ration?arrow_forwardVerify that if two stars have a difference of five magnitudes, this corresponds to a factor of 100 in the ratio (b2b1) ; that 2.5 magnitudes corresponds to a factor of 10; and that 0.75 magnitudes corresponds to a factor of 2.arrow_forward
- Is the Sun an average star? Why or why not?arrow_forwardWhat star appears the brightest in the sky (other than the Sun)? The second brightest? What color is Betelgeuse? Use Appendix J to find the answers.arrow_forwardWhy doesnt a magnitude difference of one mean that the corresponding flux ratio is also one?arrow_forward
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