The Gaia DR1 Mass-Radius Relation for White Dwarfs

  title={The Gaia DR1 Mass-Radius Relation for White Dwarfs},
  author={P. E. Tremblay and Nicola Gentile-Fusillo and Roberto Raddi and Stefan Jordan and Cyril Besson and Boris T. Gaensicke and Steven G. Parsons and Detlev Koester and Thomas R. Marsh and Ralph C. Bohlin and Jason S. Kalirai},
  journal={Monthly Notices of the Royal Astronomical Society},
The Gaia Data Release 1 (DR1) sample of white dwarf parallaxes is presented, including six directly observed degenerates and 46 white dwarfs in wide binaries. This data set is combined with spectroscopic atmospheric parameters to study the white dwarf mass–radius relationship (MRR). Gaia parallaxes and G magnitudes are used to derive model atmosphere-dependent white dwarf radii, which can then be compared to the predictions of a theoretical MRR. We find a good agreement between Gaia DR1… 

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