Benchmark stars for cross-calibration of Galactic stellar surveys.

U. Heiter, P. JofrÚ, A. Korn, C. Soubiran, F. ThÚvenin, S. Blanco-Cuaresma (Upsala University, Sweden)

Various Galactic stellar spectroscopic surveys are currently underway, and each is expected to achieve high internal accuracy in terms of stellar parameters and abundances. A number of questions related to the formation and evolution of the Galaxy may be addressed based on samples of stars observed within each survey. In addition, complementary samples of stars may be constructed by combining data from different surveys. The Gaia FGK Benchmark Stars provide the necessary link to bring the quantities measured from different spectra with different methods onto the same scale. We will discuss the quality of the fundamental determinations of effective temperature and surface gravity for the set of about 30 stars, and present the currently recommended reference values for the atmospheric parameters. An outlook on future developments will also be given.

Topic revision: r1 - 2014-11-28 - SusanaBascon
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