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Red giants in the vicinity of open clusters. Field stars

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Abstract

We present a comparative analysis of the atmospheric abundances of red giants in the vicinity of open clusters. The atmospheric parameters, atmospheric abundances, masses, ages, Galactic velocities, and elements of the Galactic orbits are derived for all the studied stars. We have discovered high metal abundances (close to 0.3dex) for five stars, which we classify as super-metal-rich stars. Several stars have lower [Na/Fe] than normal red giants with similar atmospheric parameters. The kinematic characteristics of these stars are somewhat different from those for objects in the Galactic thin disk. We suggest that the observed effect can be explained by inhomogeneity of the chemical composition of gas-dust clouds, which could be due to different rates of SNe II supernovae in different regions of the Galaxy.

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Authors and Affiliations

  1. Institute of Astronomy, Russian Academy of Sciences, Moscow, Russia

    Yu. V. Pakhomov, L. I. Antipova & A. A. Boyarchuk

  2. National Astronomical Observatories, Beijing, China

    G. Zhao & Ya. Liang

Authors
  1. Yu. V. Pakhomov
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  2. L. I. Antipova
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  3. A. A. Boyarchuk
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  4. G. Zhao
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  5. Ya. Liang
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Additional information

Original Russian Text © Yu.V. Pakhomov, L.I. Antipova, A.A. Boyarchuk, G. Zhao, Ya. Liang, 2009, published in Astronomicheskiĭ Zhurnal, 2009, Vol. 86, No. 8, pp. 739–757.

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Pakhomov, Y.V., Antipova, L.I., Boyarchuk, A.A. et al. Red giants in the vicinity of open clusters. Field stars. Astron. Rep. 53, 685–702 (2009). https://doi.org/10.1134/S1063772909080010

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  • DOI: https://doi.org/10.1134/S1063772909080010

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