The atmospheric lithium abundances of solar analogues |
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| Authors: | A I Galeev I F Bikmaev L I Mashonkina F A Musaev G A Galazutdinov |
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| Institution: | (1) Kazan State University, Kremlevskaya str. 18, Kazan, Tatarstan, 420008, Russia;(2) Department of Physics, Kazan State Pedagogical University, Mezhlauk str. 1, Kazan, Tatarstan, 420021, Russia;(3) Special Astrophysical Observatory, Russian Academy of Sciences, Nizhnii Arkhyz, Karachai-Cherkessian Republic, 369167, Russia |
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| Abstract: | We have analyzed the lithium abundance in the atmospheres of 20 stars that are solar analogues based on high-resolution echelle spectra using model atmospheres in a non-LTE approach. In terms of their lithium abundances, the stars (which are located in a narrow range of temperatures of 5650–5900 K) can be divided into two groups: one with low lithium abundances, as in the solar atmosphere, and one with lithium abundances that are higher than the solar value by about 1 dex (with the accuracy of the lithium abundances being 0.15 dex). |
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