UNDERSTANDING THE UNIVERSE(LL)-W/CODE
3rd Edition
ISBN: 9780393869903
Author: PALEN
Publisher: NORTON
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Chapter 5, Problem 8QAP
To determine
The correct order for the arrangement of the pillars and the light source.
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Which of the following is least reasonable regarding stars on a Hertzsprung-Russell diagram?
1)Stars with the largest radii are found in the upper right of the diagram.
2) Red giants are found in the upper right of the diagram.
3)White dwarfs are found in the lower left of the diagram.
4) On the main sequence, the mass of stars generally increases to the right.
The H-R diagram is the most important graph in astronomy. One of the reasons that this graph is so powerful is the number of different kinds of data it shows. Most graphs show two types of data. The H-R diagram shows seven. Can you name these 7 types of information about stars that appear on the H-R diagram?
Which statement is most logical?
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First stars are thought to have been more massive than Sun because the materials used to make clouds were more abundant at the beginning
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First stars are thought to have been more massive than Sun because the temperatures of the clouds that made them were higher because they consisted entirely of hydrogen and helium
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First stars are thought to have been more massive than Sun because star-forming clouds were much denser early in time
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First stars are thought to have been more massive than Sun because the clouds that made them were much more massive
Chapter 5 Solutions
UNDERSTANDING THE UNIVERSE(LL)-W/CODE
Ch. 5.1 - Prob. 5.1CYUCh. 5.2 - Prob. 5.2CYUCh. 5.3 - Prob. 5.3CYUCh. 5.4 - Prob. 5.4CYUCh. 5.5 - Prob. 5.5CYUCh. 5.6 - Prob. 5.6CYUCh. 5 - Prob. 1QAPCh. 5 - Prob. 2QAPCh. 5 - Prob. 3QAPCh. 5 - Prob. 4QAP
Ch. 5 - Prob. 5QAPCh. 5 - Prob. 6QAPCh. 5 - Prob. 7QAPCh. 5 - Prob. 8QAPCh. 5 - Prob. 9QAPCh. 5 - Prob. 10QAPCh. 5 - Prob. 11QAPCh. 5 - Prob. 12QAPCh. 5 - Prob. 13QAPCh. 5 - Prob. 14QAPCh. 5 - Prob. 15QAPCh. 5 - Prob. 16QAPCh. 5 - Prob. 17QAPCh. 5 - Prob. 18QAPCh. 5 - Prob. 19QAPCh. 5 - Prob. 20QAPCh. 5 - Prob. 21QAPCh. 5 - Prob. 22QAPCh. 5 - Prob. 23QAPCh. 5 - Prob. 24QAPCh. 5 - Prob. 25QAPCh. 5 - Prob. 27QAPCh. 5 - Prob. 28QAPCh. 5 - Prob. 29QAPCh. 5 - Prob. 30QAPCh. 5 - Prob. 31QAPCh. 5 - Prob. 32QAPCh. 5 - Prob. 34QAPCh. 5 - Prob. 35QAPCh. 5 - Prob. 36QAPCh. 5 - Prob. 37QAPCh. 5 - Prob. 38QAPCh. 5 - Prob. 39QAPCh. 5 - Prob. 40QAPCh. 5 - Prob. 41QAPCh. 5 - Prob. 42QAPCh. 5 - Prob. 43QAPCh. 5 - Prob. 44QAPCh. 5 - Prob. 45QAP
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- Are supergiant stars also extremely massive? Explain the reasoning behind your answer.arrow_forwardYou have discovered two star clusters. The first cluster contains mainly main-sequence stars, along with some red giant stars and a few white dwarfs. The second cluster also contains mainly main-sequence stars, along with some red giant stars, and a few neutron stars-but no white dwarf stars. What are the relative ages of the clusters? How did you determine your answer?arrow_forwardWhich of the following is least reasonable regarding a star's position on the HR diagram? Group of answer choices Red dwarfs are small and cool and inhabit the lower right part of the HR diagram. Our Sun is pretty average and is located somewhere around the center of the diagram. Blue giants are hot and big and are located in the upper left part of the HR diagram. White dwarfs are small and cool and are located in the lower left part of the HR diagram. Red giants are big and cool and are located in the upper right part of the HR diagram.arrow_forward
- Question 41 .Suppose you are looking at H-R diagrams of two similar star clusters. The most luminous main sequence stars in the Porcini cluster are much more luminous than the most luminous main sequence stars in the Morel cluster. What can you conclude? O the Porcini cluster is younger than the Morel cluster O the Porcini cluster is farther away than the Morel cluster O the Porcini cluster is lower in metallicity than the Morel cluster O the Porcini cluster is larger in diameter than the Morel clusterarrow_forward15 On a Hertzsprung-Russell diagram, where on the main sequence would we find stars that have the greatest mass? A B D Lower right Upper right Upper left Lower leftarrow_forwardAll stars start their lives with the same basic composition. What determines their differences? Colour they formed with Luminosity they formed with Mass they formed with O Location of formationarrow_forward
- Consider three main sequence stars: Star A is 14,500 K, Star B is 2,900 K, and Star C is 5,500 K. What are the colors of each of these stars?arrow_forward1:Which star has been redshifted the most? 2:Which star is moving towards us the fastest? Star C Star D Star A Star B 3:The wavelength of this spectral feature is measured to be 600nm in the lab, and 609 in Star A. What is the radial velocity of Star A? using km/s,arrow_forwardThe figure below shows pairs of spectra with a set of spectral lines. The top spectrum always shows the lines created in a laboratory with a given gas ("Lab") and the bottom spectrum shows the same set of lines from a distant star. Rank the five stars based on the Doppler shifts of their spectra, from largest redshift through no shift, to largest blueshift.arrow_forward
- Consider three main sequence stars: Star A is 12000 K, Star B is 6000 K, Star C is 3000 K. What are the colors of each of these stars? If these stars are the same distance from the Earth, which star is the brightest?arrow_forwardPLEASE ANSWER THIS QUESTION WITH IN 30 MINUTESarrow_forwardTopic: Life cycle of stars Q. What color are the hottest stars? What color are the coolest stars?arrow_forward
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