THE SULPHUR ABUNDANCE BEHAVIOUR IN THE GALACTIC DISC STARS
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Дата
2015
Науковий керівник
Укладач
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Назва журналу
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Номер E-ISSN
Назва тому
Видавець
Astroprint
Анотація
The sulphur abundances in the atmospheres
of the F-G-K-type dwarf stars that belong to the thin and thick disc populations (in the metallicity range – 1.0 < [Fe/H] < 0.3) were determined. The observations
were conducted using the 1.93 m telescope at Observatoire de Haute-Provence (OHP, France) equipped with the echelle-type spectrograph ELODIE (R = 40 000). The
abundances were derived under the LTE approximation; the synthetic spectrum for the sulphur lines in the region
of 6743-6762 ÅÅ was computed accounting for the hyperfine structure. The correlation between the abundances of
some elements and metallicity [Fe/H] in the Galactic thin and thick disc stars was analyzed. To discuss the sources
of sulphur production, the comparison between the sulphur abundance trend and current theoretical computations
of the Galactic chemical evolution was made.
Опис
Odessa Astronomical publications / Одесская астроном. обсерватория . – Одесса : Астропринт, 2015.
Ключові слова
Stars: abundance – Stars: late-type
Бібліографічний опис
Odessa Astronomical Publications