Mastering Astronomy with Pearson eText -- ValuePack Access Card -- for The Essential Cosmic Perspective
7th Edition
ISBN: 9780321928375
Author: Jeffrey O. Bennett, Megan O. Donahue, Nicholas Schneider, Mark Voit
Publisher: PEARSON
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Chapter 16, Problem 49EAP
Hubble’s Galaxy Types. How would you classify the following galaxies using the system illustrated in Figure 16.7? Justify your answers.
- Galaxy M101 (Figure 16.2)
- Galaxy NGC 4594 (Figure 16.3)
- Galaxy NGC 1300 (Figure 16.4)
- Galaxy M87 (Figure 16.5)
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Chapter 16 Solutions
Mastering Astronomy with Pearson eText -- ValuePack Access Card -- for The Essential Cosmic Perspective
Ch. 16 - Prob. 1VSCCh. 16 - Prob. 2VSCCh. 16 - Answer questions 1-3 based on Figure 16.18,...Ch. 16 - Prob. 4VSCCh. 16 - Prob. 5VSCCh. 16 - Prob. 6VSCCh. 16 - Prob. 7VSCCh. 16 - Prob. 1EAPCh. 16 - Prob. 2EAPCh. 16 - Prob. 4EAP
Ch. 16 - Prob. 3EAPCh. 16 - Prob. 5EAPCh. 16 - Prob. 6EAPCh. 16 - Prob. 7EAPCh. 16 - Prob. 8EAPCh. 16 - Prob. 9EAPCh. 16 - Prob. 10EAPCh. 16 - Prob. 11EAPCh. 16 - Prob. 12EAPCh. 16 - Prob. 13EAPCh. 16 - Prob. 14EAPCh. 16 - Prob. 15EAPCh. 16 - Prob. 16EAPCh. 16 - Prob. 17EAPCh. 16 - Prob. 18EAPCh. 16 - Prob. 19EAPCh. 16 - Prob. 20EAPCh. 16 - Prob. 21EAPCh. 16 - Prob. 22EAPCh. 16 - Prob. 23EAPCh. 16 - Prob. 24EAPCh. 16 - Prob. 25EAPCh. 16 - Prob. 26EAPCh. 16 - Prob. 27EAPCh. 16 - Prob. 28EAPCh. 16 - Prob. 29EAPCh. 16 - Prob. 30EAPCh. 16 - Prob. 31EAPCh. 16 - Prob. 32EAPCh. 16 - Prob. 33EAPCh. 16 - Prob. 34EAPCh. 16 - Prob. 35EAPCh. 16 - Prob. 36EAPCh. 16 - Prob. 37EAPCh. 16 - Prob. 38EAPCh. 16 - Prob. 39EAPCh. 16 - Prob. 40EAPCh. 16 - Prob. 41EAPCh. 16 - Prob. 42EAPCh. 16 - Prob. 43EAPCh. 16 - Prob. 44EAPCh. 16 - Unanswered Questions. Briefly describe one...Ch. 16 - Prob. 46EAPCh. 16 - Prob. 47EAPCh. 16 - Prob. 48EAPCh. 16 - Hubble’s Galaxy Types. How would you classify the...Ch. 16 - Prob. 50EAPCh. 16 - Galaxies at Great Distances. The most distant...Ch. 16 - Universe on a Balloon. In what ways is the surface...Ch. 16 - Prob. 53EAPCh. 16 - Prob. 54EAPCh. 16 - Prob. 56EAPCh. 16 - Prob. 57EAPCh. 16 - Prob. 58EAPCh. 16 - Prob. 59EAPCh. 16 - Prob. 60EAPCh. 16 - Prob. 61EAPCh. 16 - Prob. 62EAPCh. 16 - Prob. 63EAPCh. 16 - Prob. 64EAPCh. 16 - Prob. 65EAP
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- What are the two best ways to measure the distance to a nearby spiral galaxy, and how would it be measured?arrow_forwardIf the diameter of the Milky Way Galaxys visible disk, 80,000 ly, is represented in a model by a dinner plate with a diameter of 10 inches, what is the model distance to galaxy M31, 2.6 millionly away? What is the model distance to the Virgo galaxy cluster, 16 Mpc away? (Convert answers to feet.)arrow_forwardDescribe the evolution of an elliptical galaxy. How does the evolution of a spiral galaxy differ from that of an elliptical?arrow_forward
- Suppose we could measure the distance to a galaxy using one of the distance techniques listed in Table 26.2 and it turns out to be 200 million light-years. The galaxy’s redshift tells us its recessional velocity is 5000 km/s. What is the Hubble constant?arrow_forwardSuppose the Sagittarius dwarf galaxy merges completely with the Milky Way and adds 150,000 stars to it. Estimate the percentage change in the mass of the Milky Way. Will this be enough mass to affect the orbit of the Sun around the galactic center? Assume that all of the Sagittarius galaxy’s stars end up in the nuclear bulge of the Milky Way Galaxy and explain your answer.arrow_forwardWe have said that the Galaxy rotates differentially; that is, stars in the inner parts complete a full 360° orbit around the center of the Galaxy more rapidly than stars farther out. Use Kepler’s third law and the mass we derived in Exercise 25.19 to calculate the period of a star that is only 5000 light-years from the center. Now do the same calculation for a globular cluster at a distance of 50,000 light-years. Suppose the Sun, this star, and the globular cluster all fall on a straight line through the center of the Galaxy. Where will they be relative to each other after the Sun completes one full journey around the center of the Galaxy? (Assume that all the mass in the Galaxy is concentrated at its center.)arrow_forward
- Based on your analysis of galaxies in Table 26.1, is there a correlation between the population of stars and the quantity of gas or dust? Explain why this might be.arrow_forwardExplain where in a spiral galaxy you would expect to find globular clusters, molecular clouds, and atomic hydrogen.arrow_forward
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