... Title: . Iron abundance in the atmospheres of components of the binary system 41 Draconis . Authors: . Balega, Yu. Yu. ... 5B Iron abundances, FeI and FeII lines equivalent widths, and microturbulence velocities were found for the components of a ...
... Contacts . 1994: . For the first time the abundance of iron is determined in gas components of 10 blue compact galaxies. ... An average excess of oxygen versus iron is [O/Fe]=0.34 which is typical for stars of the galactic haloes. ...
... Moreover, the real excess (relative to iron) of heavy metals Y, Zr, Ba, La, Ce, Pr, Nd synthesized by the neutronization process indicates an effective third dredge-up and further confirms IRAS04296 to be in the advanced post-AGB evolution stage. ...
... The iron-group element zinc is the most important for determination of real (initial) value of the metallicity of a star since, firstly, its abundance follows that of iron in a wide [Fe/H] interval (Sneden & Crocker 1988; Wheeler et al. ...
... abundance diagram for lines of neutral (dots) and ionized (crosses) iron atoms ... Figure: Upper: iron abundance FeI (circles) and FeII (crosses) calculated for ... elements (CNO-elements, light metals, iron group elements, Ce, Nd, Eu) have been ...
... The existing theories of the Solar System formation do not provide a satisfactory explanation for the fact that the ironnickel core formed is precisely an ironnickel one. ...
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Ссылки http://www.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p444.pdf -- 149.3 Кб -- 11.08.2011 Похожие документы
... line formation for neutral and singlyionized iron is considered for the AF type ... A comprehensive model atom for iron is taken from Mashonkina et al. (2010). ... formation Stars: atmosphere 1 Intro duction Iron is the most popular chemical ...
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Ссылки http://www.sao.ru/Doc-en/Science/Public/Conf/magstars-2010/p314.pdf -- 231.6 Кб -- 11.08.2011 Похожие документы
... Iron abundance in the atmosphere of HD 217833 The data of Table 2 and 3 show that the iron abundance in the atmosphere of HD 217833 calculated from the two groups of lines, when varying the microturbulent velocity and magnetic field values, may change 202 ...
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Ссылки http://www.sao.ru/hq/lizm/conferences/pdf/2003/2003_p198.pdf -- 141.6 Кб -- 21.04.2010 Похожие документы
... peculiar we found a small increase of iron abundance in its upper atmosthe re- phere ... n starte d for fou r chemica l elements : iron, chromium , europiu m and gadolinium ...
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Ссылки http://www.sao.ru/hq/lizm/conferences/pdf/1991/1992_1_p32-p40.pdf -- 97.2 Кб -- 24.02.2010 Похожие документы