천문학회보 (The Bulletin of The Korean Astronomical Society)

한국천문학회 (The Korean Astronomical Society)
권호 표지

Chemical Abundance Analysis of Ultra Metal-Poor ([Fe/H] < -4.0) Stars

  • Jeong, Mi Ji (Department of Astronomy, Space Science, and Geology, Chungnam National University) ;
  • Lee, Young Sun (Department of Astronomy and Space Science, Chungnam National University)
  • 발행 : 2017.10.10
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초록

We present preliminary results of elemental abundances of six ultra-metal poor (UMP; [Fe/H] < -4.0) stars derived from high-resolution spectra obtained by Gemini/GRACES. The UMP candidates were selected for the high-resolution follow-up from the low-resolution spectra of Sloan Digital Sky Survey (SDSS). We investigate possible progenitors of the UMP objects by comparing the measured abundance patterns with yields that various supernova models predict. Our results can provide stringent constraints on the mass range of the first generation of stars, which are the progenitors of the UMP objects.

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