The Donor Stars of Cataclysmic Variables

  title={The Donor Stars of Cataclysmic Variables},
  author={Christian Knigge},
  journal={Monthly Notices of the Royal Astronomical Society},
  • C. Knigge
  • Published 25 September 2006
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We construct a complete, semi-empirical donor sequence for CVs with orbital periods less than 6 hrs. All key physical and photometric parameters of CV secondaries (along with their spectral types) are given as a function of P_orb along this sequence. The main observational basis for our donor sequence is an empirical mass-radius relation for CV secondaries. We present an optimal estimate for this relation that ensures consistency with the observed locations of the period gap and the period… 


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