Deriving the orbital properties of pulsators in binary systems through their light arrival time delays

  title={Deriving the orbital properties of pulsators in binary systems through their light arrival time delays},
  author={Simon J. Murphy and Hiromoto Shibahashi},
  journal={Monthly Notices of the Royal Astronomical Society},
We present the latest developments to the phase modulation method for finding binaries among pulsating stars. We demonstrate how the orbital elements of a pulsating binary star can be obtained analytically, that is, without converting time delays to radial velocities by numerical differentiation. Using the time delays directly offers greater precision, and allows the parameters of much smaller orbits to be derived. The method is applied to KIC 9651065, KIC 10990452 and KIC 8264492, and a set of… 
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