Masses
 of Binary stars
 
 
 
  
  
   
   
   
   
   
   
   
   
   
   
   
   
  
  
  
 
  
 
  
  
  
  
 
  
  
  
 
  
  
  
 
  
  
  
 
 From our text:  Horizons, by Seeds
 An example. 
 Suppose we measured the period in a spectroscopic binary and knew the spectral types (and hence the masses, as we
 shall see) of the component
 stars.  The period is 2 years (P =
 2 years) and the stars are a G star
 (1 solar mass) and a M star (0.5 solar masses).  What is the separation?