DISCOVERY OF THE FIRST SUPER-LITHIUM RICH BEAT CEPHEID: V371 PER
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Дата
2012
Науковий керівник
Укладач
Редактор
Назва журналу
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Назва тому
Видавець
Astroprint
Анотація
Four high-resolution spectra of the
double-mode Cepheid V371 Per, obtained for the first time, showed the presence of the abnormally strong Li i 6707.76 ˚A line. Our analysis of the light element abundances indicates that the star did not go through
the evolutionary dredge-up stage. Large distance from the galactic plane and the low metallicity suggest that V371 Per may belong to the thick disc (or to the halo) of the Galaxy, which is consistent with its low
metallicity [Fe/H]=–0.42 and the enhancement of the a- and s-elements relative to iron. Line splitting is observed in one of the spectra, which can be due to the non-radial pulsations.
Опис
Odessa Astronomical publications / Одесская астроном. обсерватория . – Одесса : Астропринт, 2012 . – Vol.25/1.
Ключові слова
Classical Cepheids – stars: individual: V371 Per
Бібліографічний опис
Odessa Astronomical Publications