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

ELEMENTAL ABUNDANCES IN THE ATMOSPHERES OF THREE METAL - DEFICIENT GIANTS

T. V. Mishenina, V. G. Klochkova, V. E. Panchuk

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.

Ключові слова


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

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