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Deriving Oort Constants From Kepler's Third Law

  1. Apr 2, 2013 #1
    Hello everybody. New here. Hope you are all doing well. I am a sophomore in college, studying physics and astronomy. I am in my first astrophysics class and struggling with how to approach problems. That being said, I need a little homework help if you can afford some time!

    1. Starting with Kepler's Third Law, (M1 + M2)p^2=4(pi^2)(a^3), derive expressions for the Oort Constants, A and B, for circular motion around a point mass. (Hint: first derive a relation for V(R) for a star in Keplerian orbit.)

    Any help or pushes in the right direction would be greatly appreciated. Thanks for your time.
     
  2. jcsd
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