UNIVERSE (LOOSELEAF):STARS+GALAXIES
6th Edition
ISBN: 9781319115043
Author: Freedman
Publisher: MAC HIGHER
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Chapter 19, Problem 25Q
To determine
To explain:
The way H-R diagrams of star clusters could be used toset limits on the age of the universe.
Whether or not, they could be used toset lower limits on the age.
Whether or not, they could be used to set upperlimits.
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The figure below shows the spectra of two galaxies A and B.
Indicate whether the following statements are true or false.
(Select T-True, F-False. If the first is T and the rest F, enter
TFFFFF).
A) If we find an O type star in our galaxy, it must be in the disk.
B) The nearest large spiral Galaxy, similar in size to the Milky Way, is the Andromeda Galaxy (M31). It is located about 2 million light years from Earth.
C) The disk of the Milky Way galaxy is about 100,000 light years in diameter.
D) On very large scales, matter in the Universe is distributed in clumps and voids.
E) Distances to most stars in the Milky Way are measured by parallax.
F) RR Lyrae and Cepheid variable stars are used to measure the distance to nearby galaxies.
The figure below shows the spectra of two galaxies A and B.
Please can i get help with this questions below:
1. Which of these galaxies has ongoing star formation? How can you tell?2. One of these galaxies has Hubble type E3 while the other is SBb. Which is which? What does the 3 inE3 tell you about the galaxy? What does the SB in SBb tell you about the galaxy?3. What effects would dust have on the two spectra?4. Which galaxy would you expect to have more far-infrared emission? Expl
Chapter 19 Solutions
UNIVERSE (LOOSELEAF):STARS+GALAXIES
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