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Solar twins: lithium abundance scatterстатья
- Авторы: Mishenina T., Soubiran C., Charbonnel C., Katsova M., Nizamov B.
- Журнал: Memorie della Societa Astronomica Italiana Supplementi
- Том: 91
- Год издания: 2020
- Первая страница: 171
- Последняя страница: 174
- Аннотация: To clarify the reasons for the dispersion of Li in the atmosphere of solar type stars,a set of 56 solar analogs including 22 solar twins is analysed based on spectra obtained withthe ELODIE spectrograph at Observatoire de Haute Provence (France). Lithium abundancesare derived by comparing observed and synthetic spectra in the region of Li I line 6707 Å inLTE approximation. The dependencies of the Li abundances on effective temperature Teff, age,rotational velocities vsini and chromospheric activity log R’HK were constructed and analyzedin the frame of stellar evolution theories. The results obtained are generally consistent withtheories considering induced-rotational mixing.
- Добавил в систему: Кацова Мария Михайловна