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Information × Registration Number 0206U009330, 0103U002156 , R & D reports Title Evolution of chemical composition of high amd medium mass stars popup.stage_title Head Lubimkov L.S., Registration Date 03-01-2007 Organization Scientific-research institute "Crimean astrophysical observatory" popup.description2 Spectral observations of 90 supergiants of classes A, F and G are completed. The analysis of structure of carbon, nitrogen and oxygen in atmospheres of the 57 main sequence stars (MS) is completed. Contents of nitrogen at MS-stars ГП, as well as contents of helium, depend on the age of the stars. Product Description popup.authors popup.nrat_date 2020-04-02 Close