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Determination of non-LTE barium abundances in solar-type stars: A technique for non-LTE calculations

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dc.contributor.author Mashonkina L.
dc.contributor.author Bikmaev I.
dc.date.accessioned 2018-09-17T21:09:55Z
dc.date.available 2018-09-17T21:09:55Z
dc.date.issued 1996
dc.identifier.issn 1063-7729
dc.identifier.uri https://dspace.kpfu.ru/xmlui/handle/net/134610
dc.description.abstract Detailed statistical-equilibrium calculations are performed for the Ba II ion to elucidate the influence of non-LTE effects on barium abundances in the atmospheres of stars with Teff = 5500-6500 K, log g = 4.0 and 4.5, and [Fe/H] from -2 to 0. The computed non-LTE abundance corrections depend on the initial barium abundance εBa. They reverse sign as [Ba/H] changes from 0 to -2. The corrections are at a minimum for the λ5853 line (from -0.07 to +0.016 dex) and at a maximum for the λ6141 and 6496 lines (from -0.20 to +0.14 dex). In addition, the uncertainties in εBa resulting from errors in Teff, log g, and microturbulence ξt, as well as from the use of different model atmospheres and inaccuracies in the line-broadening parameters, are estimated.
dc.relation.ispartofseries Astronomy Reports
dc.title Determination of non-LTE barium abundances in solar-type stars: A technique for non-LTE calculations
dc.type Article
dc.relation.ispartofseries-issue 1
dc.relation.ispartofseries-volume 40
dc.collection Публикации сотрудников КФУ
dc.relation.startpage 94
dc.source.id SCOPUS10637729-1996-40-1-SID0030489176


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  • Публикации сотрудников КФУ Scopus [24551]
    Коллекция содержит публикации сотрудников Казанского федерального (до 2010 года Казанского государственного) университета, проиндексированные в БД Scopus, начиная с 1970г.

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