Abundance analysis of three metal poor stars: CS 22166-0030, CS 22186-0005, and CS 30344-0033

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ÇALIŞKAN TÜRKSOY Ş., Caffau E., Bonifacio P., Sbordone L., Albayrak B.

298th Symposium of the International-Astronomical-Union, Lijiang, PEOPLES R CHINA, 20 - 24 Mayıs 2013, cilt.9, ss.381-386 identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 9
  • Doi Numarası: 10.1017/s1743921313006595
  • Basıldığı Şehir: Lijiang
  • Basıldığı Ülke: PEOPLES R CHINA
  • Sayfa Sayıları: ss.381-386
  • Anahtar Kelimeler: stars: abundances, stars: Population II, Galaxy: abundances, Galaxy: evolution, CHEMICAL-COMPOSITIONS, SEARCH, FIELD, RED, FE
  • Ankara Üniversitesi Adresli: Evet

Özet

We present the abundance analysis of three very metal poor stars, CS 221660030 ([Fe/H]- -2.96), CS 22186-0005 ([Fe/H]- -2.70), and CS 30344-0033 ([Fe/H]- -2.90). Our study is based on high resolution spectra which were obtained from SARG (on TNG), HARPS (on 3.6m), and UVES (on VLT) spectrographs and one-dimensional ATLAS9 model atmospheres. We derived the abundances for 2, 9, and 16 atomic species in the spectrum of CS 22166-0030, CS 22186-0005, and CS 30344-0033, respectively. The Na and Mg abundances of CS 22166-0030 are highly under-abundant with respect to the solar values. The abundance patterns of CS 22186-0005 and CS 30344-0033 are consistent with the other halo stars within abundance uncertainties.