High‐resolution spectroscopic study of red clump stars in the Galaxy: iron‐group elements

  title={High‐resolution spectroscopic study of red clump stars in the Galaxy: iron‐group elements},
  author={E. Puzeras and Gra{\vz}ina Tautvai{\vs}ienė and J. G. Cohen and David F. Gray and Saul J. Adelman and Ilya Ilyin and Yuriy Chorniy},
  journal={Monthly Notices of the Royal Astronomical Society},
The main atmospheric parameters and abundances of the iron-group elements (vanadium, chromium, iron, cobalt and nickel) are determined for 62 red giant ‘clump’ stars revealed in the Galactic field by the Hipparcos orbiting observatory. The stars form a homogeneous sample with the mean value of temperature T_(eff)= 4750 ± 160 K, of surface gravity log g= 2.41 ± 0.26 and the mean value of metallicity [Fe/H]=−0.04 ± 0.15 dex. A Gaussian fit to the [Fe/H] distribution produces the mean 〈[Fe/H]〉=−0… 

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