Astronomers can identify double stars by analyzing the characteristic frequencies of light emitted from each star. This method involves examining the spectral lines and their shifts, which indicate the presence of multiple stellar bodies. Resources such as the Cornell University Astronomy course provide foundational knowledge on this topic, specifically in Lecture 16, which covers the principles of stellar spectroscopy.
PREREQUISITESAstronomy students, astrophysicists, and amateur astronomers interested in understanding double star systems and the analysis of stellar light frequencies.
There is a good start here with links back to the index on the whole course:Originally posted by 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