To prepare for this assignment, watch the following two videos:

1. Overview of methods to search for extrasolar planets:

5 Ways to Find a Planet

2. Tutorial on reading a transit light curve.

Transit Light Curve Tutorial

To submit your assignment via Dropbox, click on this link and choose the "Add a file" button.

For your assignment you are to review the following transit graphs and answer the questions below.

For each question below give a reponse and an explanation of how you got your answer. Your total answer for all parts of the each question should be about 100 words.

1. Example 1

1A. What method was used to obtain this data?

1B. What is the period of this planet's orbit around its star?

1C. How long does it take for this planet to pass in front of its star?

2. Example 2

These data are from two extrasolar planets that are each orbitting a star with a similar in mass to our sun.

For each question provide a 100-ish word explanation of how you deduced your answer.

The extrasolar planets are named after their stars, so they are WASP 28b and TrES2b.

2A.Which planet, WASP 28b or TrES2b, takes longer to orbit its central star?

2B. How does their orbit compare to the orbit of the Earth around the Sun?

2C. Which one is (slightly) farther away from it star?

2D.Which one takes longer to pass in front of the star?

3. Example 3

This is the transit light curve from TRAPPIST-1.

Explain why the light curve is not a single peak. What is causing the bumps in the light curve? Give a 100-ish word answer.