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- Title
Lithium abundances in sunspots from observations made in 2014.
- Authors
Baranovskii, E.; Tarashchuk, V.
- Abstract
Spectra of sunspots in the regions of the Li I 6708 Å line and certain Fe I and Ca I lines are presented. The observations wee carried out in August 2014 using a CCD array mounted at the BST-2 telescope of the Crimean Astrophysical Observatory. Sunspot models based on the observed Fe I and Ca I line profiles have been computed, and used together with the observed Li I 6708 Å profiles to determine the lithium abundances. The mean lithium abundance for the sunspots observed on August 26, 2014 is log A(Li) = 1.2 (on a scale for which log A(H) = 12.0). Sunspot spectra obtained on October 8, 2011 were also analyzed, yielding log A(Li) = 1.02.
- Subjects
SUNSPOTS spectra; LITHIUM spectra; CHARGE coupled devices; TELESCOPES; ASTROPHYSICAL electric fields
- Publication
Astronomy Reports, 2016, Vol 60, Issue 8, p776
- ISSN
1063-7729
- Publication type
Article
- DOI
10.1134/S1063772916080035