FM stars: A Fourier view of pulsating binary stars, a new technique for measuring radial velocities photometrically

  title={FM stars: A Fourier view of pulsating binary stars, a new technique for measuring radial velocities photometrically},
  author={Hiromoto Shibahashi and Donald W. Kurtz},
  journal={arXiv: Solar and Stellar Astrophysics},
Some pulsating stars are good clocks. When they are found in binary stars, the frequencies of their luminosity variations are modulated by the Doppler effect caused by orbital motion. For each pulsation frequency this manifests itself as a multiplet separated by the orbital frequency in the Fourier transform of the light curve of the star. We derive the theoretical relations to exploit data from the Fourier transform to derive all the parameters of a binary system traditionally extracted from… 

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