Today:. Star sizes HR diagrams More info from spectra Mass: Mass and luminosity How do we measure mass? Binary stars. Stars come in various sizes. Let’s do a few calculations to get a feel for the range of stellar sizes:. Finding key properties of a nearby star.
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Let’s do a few calculations to get a feel for the range of stellar sizes:
In principle, if we can determine a and P we can calculate M1+M2. We want M1 and M2 separately however. How do we find that?