ELEMENTAL ABUNDANCES IN THE ATMOSPHERES OF THREE METAL - DEFICIENT GIANTS

Автор(и)

  • T. V. Mishenina Astronomical Observatory, Odessa State University, T.G.Shevchenko Park, Odessa 270014 Ukraine, Україна
  • V. G. Klochkova Special Astrophysical Observatory RAS Nizhniy Arkhyz, Stavropl'skii Kraii, 357147 Russia, Російська Федерація
  • V. E. Panchuk Special Astrophysical Observatory RAS Nizhniy Arkhyz, Stavropl'skii Kraii, 357147 Russia, Російська Федерація

DOI:

https://doi.org/10.18524/1810-4215.1994.7.105759

Ключові слова:

stars, metal-deficient giants -stars, abundances - stars, atmospheres - Galaxy, evolution

Анотація

High dispersion high resolution CCD spectra have been used for the determination of the elemental abundances in three metal-deficient stars. The following results were obtained: 1) an overabundance of O is found; 2) Si, Ca, Ti are overabundant with respect to iron in stars with [Fe/H]= -1.5; 3) halo stars show an underabundance of the odd elements Na and Al relative to the abundance of the even element Mg; 4) Ni and Mn are slightly over deficient; 5) an underabundance of Cu is found in all three stars ; 6) s-process elements are slightly overabundant.

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Опубліковано

2017-07-01

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