How telescope resolution affect how you classified a galaxy

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Lab Assignment: Galaxy Classification

The goal of this lab is to demonstrate the value of high resolution telescopes and to study the different types of galaxies in our universe

Types of Galaxies

Galaxies can be broken down into 3 main types. There are many subtypes of each galaxy type. The three main types are spiral, elliptical, and irregular. In the space below sketch an example of each galaxy type.

Next, navigate to the following page: https://www.zooniverse.org/projects/mikewalmsley/galaxy-zoo-mobile

Click get started. Practice cataloging 30 galaxies. Keep a tally of the number of each galaxy type you categorize.

Spiral Elliptical Irregular

1. Which galaxy type was the most common you observed?

2. How did telescope resolution affect how you classified a galaxy?

3. Using a textbook or other resource, explain the evolution of a galaxy.

4. Did you notice a difference in the color of elliptical vs. spiral galaxies? If so, what is the reason for this difference? What does this tell you about the types of stars in each galaxy as well as the age of the galaxy?

5. Did you observe any instances where galaxies were interacting with each other? If so, how were they interacting?

6. Was there any features that you observed at the center of the galaxies you observed? What does this tell you about the density of the galaxy at its center compared to the rest of the disk?

7. In our galaxy, most of the mass of the galaxy is actually thought to be located outside the central bulge. We are not able to observe this matter since it does not radiate? Do a little research on your own or with your group. What are some reasons we believe most of the matter in our galaxy is located outside the central bulge?

Reference no: EM133205802

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