Gaia FGK benchmark stars: Effective temperatures and surface gravities

  title={Gaia FGK benchmark stars: Effective temperatures and surface gravities},
  author={Ulrike Heiter and Paula Jofr'e and Bengt Gustafsson and Andreas Korn and C. Soubiran and Fr'ed'eric Th'evenin},
  journal={Astronomy and Astrophysics},
Context. In the era of large Galactic stellar surveys, carefully calibrating and validating the data sets has become an important and integral part of the data analysis. Moreover, new generations of stellar atmosphere models and spectral line formation computations need to be subjected to benchmark tests to assess any progress in predicting stellar properties. Aims: We focus on cool stars and aim at establishing a sample of 34 Gaia FGK benchmark stars with a range of different metallicities… 
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