Spectra as a Tool

We've talked about Annie Cannon and her use of stellar spectra.

We've gone through the lab on Stellar Spectra


What else can we use spectra for?


Doppler Shift reading (Book, 102-104)

Where have we seen this?


Activity:  http://carma.astro.umd.edu/AWE/Doppler/redshift.html


Based on the applet shown, what will happen when

a) a star moves towards the earth
b) a star moves away from the earth
c) the star and the earth are both moving towards one another
d) the star and the earth are both away from one another

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Spectra can also be shown in a graphical form

Let's look here:   http://casswww.ucsd.edu/archive/public/tutorial/Stars.html

What happens to the graph form when the line is black on the prism version?
What do the numbers at the bottom of the graph mean?

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How can I red-shift or blue-shift a star?

http://www.classzone.com/books/earth_science/terc/content/visualizations/es2802/es2802page01.cfm

What is happening?

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How does a galaxy spectra differ from a regular spectra....

http://www.galaxyzooforum.org/index.php?topic=1923.0

http://www.astro.washington.edu/users/anamunn/Astro101/Project1/stellar_spectroscopy_introduction.html

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Are galaxies moving towards or away from us?

http://www.astro.washington.edu/courses/labs/clearinghouse/labs/HubbleLaw/knowgalaxies.html

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What elements are present in an atmosphere (HOMEWORK)


http://lasp.colorado.edu/home/wp-content/uploads/2011/08/Goldilocks_Three_Planets_student.pdf


http://lasp.colorado.edu/home/education/k-12/project-spectra/goldilocks-interactive/ 














http://lasp.colorado.edu/home/education/k-12/project-spectra/goldilocks-interactive/