The Bulletin of The Korean Astronomical Society (천문학회보)

The Korean Astronomical Society (한국천문학회)
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Chemical abundance study of two open cluster, IC 2391 and NGC 6475 : The abundance determination

  • Park, Keun-Hong (Dept. of Physics and Astronomy, Seoul National University) ;
  • Lee, Sang-Gak (Dept. of Physics and Astronomy, Seoul National University) ;
  • Kang, Won-Seok (School of Space Research, Kyung Hee University) ;
  • Yoon, Tae-Seog (Dept. of Astronomy & Atmospheric Sciences, Kyungpook National University)
  • Published : 2011.10.05
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Abstract

In this study, we have derived the abundances of several elements ? Na, Mg, Al, Si, Ca, Sc, Ti, V, Cr, Mn, Co, Ni - for the six F G K type stars in IC 2391 and the seven stars in NGC 6475. The spectra of those stars are taken from UVES POP archive data, of which resolution is 80,000. To derive the abundances of those elements, TAME (Tools for Automatic Measurement of Equivalent-widths), Kurucz stellar atmospheric model, and MOOG code are used. The stellar parameters (effective temperature, log g, metallicity, microturbulent velocity) are determined from the iron lines. The results provide the abundance differences of chemical elements between two open clusters, IC 2391 (a member of Gould Belt) and NGC 6475 (non-member of it), which would lead to better understanding about Gould Belt.

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