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Information × Registration Number 0213U002527, 0109U008969 , R & D reports Title Research of the physical and chemical properties of the small massive stars of the first generation and the early Galaxy features of evolution popup.stage_title Head Andrievsky Sergiy, Registration Date 30-01-2013 Organization Odesa I.I.Mechnikov national university.Pervomaisk institute. popup.description2 On the basis of own unique methodology the analysis of high-quality spectra of the Galactic halo and disc stars is performed, the abundances of sulphur, potassium, calcium, strontium and other elements are obtained. The first long-scale study of the barium abundance in Galactic disc has been undertaken. For an explanation of the obtained barium abundance distribution we proposed hypothesis that theoretically grounds the dependence of the efficiency of the barium nuclei production from the overall abundance of elements heavier than helium in the stars. According to this hypothesis an efficiency increases with an increase of the overall metal deficiency. The barium distribution in Galactic disc is characterized by a zero gradient within galactocentric distances from 4000 to 16000 pc. Product Description popup.authors Бєлік С.І. Гарбузов Г.О. Кашуба В.І. Кашуба С.Г. Ковтюх В.В. Коротін С.А. Удовіченко С.М. Усенко І.О. Фащевський М.М. Чехонадських Ф.А. popup.nrat_date 2020-04-02 Close