Three types of binary stars.
Three types of binary stars.
Three types of binary stars.
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How can we find the orbital period for<br />
spectroscopic binaries?<br />
1. Watch the <strong>stars</strong> orbit each<br />
other and see how long it<br />
takes<br />
2. Watch for the absorption<br />
lines to return to their original<br />
wavelength<br />
3. Measure the masses and<br />
compute the period