On the empirical evidence for the existence of ultramassive white dwarfs

  title={On the empirical evidence for the existence of ultramassive white dwarfs},
  author={S. Vennes and A. Kawka},
  journal={Monthly Notices of the Royal Astronomical Society},
  • S. Vennes, A. Kawka
  • Published 2008
  • Physics
  • Monthly Notices of the Royal Astronomical Society
We re-examine the evidence for the existence of ultramassive (M > 1.1 M� ) white dwarfs based on gravitational redshift of white dwarfs in common proper motion binaries or in clusters, on parallax measurements, on orbital solutions and, finally, on the analysis of hydrogen-line profiles. We conclude that the best evidence is largely based on the analysis of Balmerline profiles although the companion to the A8V star HR 8210 is a compelling case made initially using the large binary mass function… Expand

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