Characteristic features of the spectrum of the unique roAp star HD 101065 near the 6708 Å lithium resonance doublet |
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| Authors: | A V Shavrina N S Polosukhina Ya V Pavlenko A V Yushchenko V F Gopka |
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| Institution: | (1) Main Astronomical Observatory, National Academy of Sciences of Ukraine, ul. Zabolotnogo 27, Kiev, 03680, Ukraine;(2) Crimean Astrophysical Observatory, Nauchnyi, Crimea, Ukraine;(3) Odessa National University, Park Shevchenko, Odessa, 65014, Ukraine;(4) Chonbuk National University, Chonju, 561-756, Korea |
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| Abstract: | Synthetic spectrum of the peculiar roAp star HD 101065 (Przybylski’s Star) have been computed in the wavelength interval 6705.8–6708.7 Å in order to describe the observed spectrum in the vicinity of the 6708 Å lithium line. Our detailed computations of the synthetic spectrum allowing for the hyperfine structure of the lithium line, lithium isotopic composition, and blending due to lines of rare-earth elements (CeII, NdII, SmII, and others) have yielded estimates of the atmospheric lithium abundance of the star and its 6Li/7Li isotopic ratio. |
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