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A systematic study of NLTE abundances of nearby stars

Published online by Cambridge University Press:  06 January 2014

Y. Q. Chen ,
G. Zhao ,
L. Mashonkina ,
J. R. Shi ,
H. W. Zhang  and
K. F. Tan
Y. Q. Chen
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
G. Zhao
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
L. Mashonkina
Affiliation:
Institute of Astronomy, Russian Academy of Sciences
J. R. Shi
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
H. W. Zhang
Affiliation:
Astronomical Department, Beijing University
K. F. Tan
Affiliation:
Key Laboratory of Optical Astronomy, National Astronomical Observatories, Chinese Academy of Sciences
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Abstract

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Approximately 80 stars from the thin disk, the thick disk and the halo of the Galaxy, in the range of −3.0 < [Fe/H] < +0.5, surface gravity of 3.0 < logg < 4.7 and temperature of 4500 K < Teff < 6500 K, have been observed with the Shane/Hamilton and CFHT/Espadons spectrographs in order to carry out a systematic NLTE study of nearby stars in a consistent way. We will determine reliably stellar parameters and determine precise elemental abundances via a comprehensive NLTE analysis of the spectral lines of Li, Na, Mg, Al, Si, K, Ca, Sc, Mn, Fe, Sr, Zr, Ba, Nd, and Eu elements. Finally, we aim to investigate the chemical evolution of the Galaxy through different stellar populations based on the NLTE abundances for total 15 elements.

Keywords

stars:abundancesstars: atmospheresstars:late type
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 9 , Symposium S298: Setting the scene for Gaia and LAMOST , May 2013 , pp. 400
Copyright
Copyright © International Astronomical Union 2014 

References

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