UNIVERSE (LOOSELEAF):STARS+GALAXIES
6th Edition
ISBN: 9781319115043
Author: Freedman
Publisher: MAC HIGHER
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Chapter 20, Problem 29Q
To determine
The distance between Sirius A and Sirius B in astronomical units.
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Chapter 20 Solutions
UNIVERSE (LOOSELEAF):STARS+GALAXIES
Ch. 20 - Prob. 1QCh. 20 - Prob. 2QCh. 20 - Prob. 3QCh. 20 - Prob. 4QCh. 20 - Prob. 5QCh. 20 - Prob. 6QCh. 20 - Prob. 7QCh. 20 - Prob. 8QCh. 20 - Prob. 9QCh. 20 - Prob. 10Q
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- How does this radius of Sirius B compare with that of Earth?arrow_forwardLet us imagine that the spectrum of a star is collected and we find the absorption line of Hydrogen-Alpha (the deepest absorption line of hydrogen in the visible part of the electromagnetic spectrum) to be observed at 656.5 nm instead of 656.3 nm as measured in a lab here on Earth. What is the velocity of this star in m/s? (Hint: speed of light is 3*10^8 m/s; leave the units off of your answer)arrow_forwardTwo stars of identical spectral type are discovered within the Milky Way galaxy. Star #1 lies at a distance of 1000 light-years. The observed flux from star #2 is 25 times smaller than that from star #1. a) How far away is star #2 in light-years? Explain your reasoning. b) A third star of the same type is discovered in a nearby galaxy, 5 × 106 light-years away. How much fainter do we expect star #3 to be, compared to star #2? Explain your reasoning.arrow_forward
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