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Contents

College Hera Home

Pretest

Ready To Go

Eclipsing Binaries

Light Curve Matching

HT-Cas Exercise
Exercise 1
Exercise 2
Exercise 3

Next Steps

Installing Hera

Using Hera
Exercise 4
Exercise 5
Exercise 6

Conclusion

HERA Tool: File Plot 3

So far, you have analyzed light curves and determined the diameter of a star in a binary system given the orbital velocity of one star. Using HERA, you've been able to see the plot of an actual binary system and manipulate parameters so that you can see the periodicity of a binary system more clearly. The last step is to actually determine the periodicity of GX-301.

Exercise 6
Using the graph you printed out, what is the period of this binary system?
days

How many rows did you plot for the graph that you used to determine the period?

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Imagine the Universe! is a service of the High Energy Astrophysics Science Archive Research Center (HEASARC), Dr. Alan Smale (Director), within the Astrophysics Science Division (ASD) at NASA's Goddard Space Flight Center.

The Imagine Team
Project Leader: Dr. Barbara Mattson
Curator: Meredith Gibb
Responsible NASA Official: Phil Newman
All material on this site has been created and updated between 1997-2013.
Last Updated: Sunday, 16-Dec-2012 22:18:24 EST

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