EXPLORATIONS:INTRO.TO ASTRONOMY
9th Edition
ISBN: 9781260150513
Author: ARNY
Publisher: RENT MCG
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Chapter 13, Problem 6P
To determine
The temperature of star Rigel and compare it with surface of the Sun.
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Chapter 13 Solutions
EXPLORATIONS:INTRO.TO ASTRONOMY
Ch. 13 - Prob. 1QFRCh. 13 - Prob. 2QFRCh. 13 - Prob. 3QFRCh. 13 - Prob. 4QFRCh. 13 - Prob. 5QFRCh. 13 - Prob. 6QFRCh. 13 - Prob. 7QFRCh. 13 - Prob. 8QFRCh. 13 - Prob. 9QFRCh. 13 - Prob. 10QFR
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- What elements are stars mostly made of? How do we know this?arrow_forwardTable 17.2 lists the temperature ranges that correspond to the different spectral types. What part of the star do these temperatures refer to? Why?arrow_forwardWhich is easier to observe at large distances-a spectroscopic binary or a visual binary?arrow_forward
- Estimating the luminosity class of an M star is much more important than measuring it for an O star if you are determining the distance to that star. Why is that the case?arrow_forwardThe lowest mass for a true star is 1/12 the mass of the Sun. What is the luminosity of such a star based upon the mass-luminosity relationship?arrow_forwardAt what wavelengths do stars of surface temperates 20 000 K, 10 000 K, and 3000 K have their peak intensity?arrow_forward
- lambdamax = 600nm (5000K/T) L ∝ R2 T 4 1. What is the peak wavelength of an O star of temperature 50,000 K? What range of the spectrum is this?arrow_forwardA newly discovered bright star has a luminosity of 78.4×1026 W. What is its temperature if it has a radius of ~1.2x106 km?arrow_forwardWhat measurements would you make (assuming you have the money, time, & equipment) to determine a star’s surface temperature?arrow_forward
- A star is found with a luminosity 2*104 greater than the sun and a photosphere (`surface’) temperature of 3,000 K. Is the star fusing hydrogen in its core?arrow_forwardIf a T Tauri star is the same temperature as the Sun but is eighteen times more luminous, what is its radius relative to the Sun? (Hint: Use the luminosity-radius-temperature relation: L L = R R 2 T T 4 .) R R =arrow_forwardA star has a peak output at 440 nm and has a luminosity of 3 solar luminosities. What is its radius? (LS=3.826 X 1026 J/s)arrow_forward
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