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B-V index for binary stars

  1. Jan 16, 2012 #1
    Hello.

    Given a binary system with two identical components (in particular de B-V index of both is the same), how would you calculate the B-V index of the system? and, how would it change during eclipses?

    I have my own answer, but want to contrast it against yours.
     
  2. jcsd
  3. Jan 16, 2012 #2
    B-V is just (a measure of) the color of the system.
    If both have the same color, what will the total color be?
    If both have the same color, would it change during occultation?
     
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