Double Star characteristic frequencies of light

mmfoley

How can an astronomer recognize a double star from the characteristic frequencies of the light that reaches him from its member stars? I have looked and looked in my textbook but I cannot come up with the answer to this one.

Thank you!
mmfoley

Labguy

There is a good start here with links back to the index on the whole course:

http://instruct1.cit.cornell.edu/cou...o101/lec16.htm

mmfoley

Thank you, I'll be sure to check this out!