Lithium abundance determination in sunspots based on observations of 2015
The sunspot spectra in the region of the lithium Li I 6708 Ǻ line and some Fe I and Ca I lines have been obtained. The observations were carried out with CCD-camera in July and August 2015 at the telescope BST-2 of the Crimean Astrophysical Observatory. The sunspot models were calculated using the observed profiles of Fe I and Ca I lines. The lithium abundance was obtained using the calculated sunspot models and observed Li I 6708 Ǻ line profiles. The mean value of the lithium abundance for the sunspots of 22.07.15 and 26.08.15 is log A(Li) =1.00 and 1.17 (in the scale log A(H) = 12.0).
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