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Information × Registration Number 0221U107111, 0120U100148 , R & D reports Title Study of the galaxy evolution using chemical composition and dynamics of gas and stars popup.stage_title Head Zinchenko Igor A., Кандидат фізико-математичних наук Registration Date 27-12-2021 Organization Main Astronomical Observatory of the National Academy of Sciences of Ukraine popup.description2 The purpose of the work is to develop new methods of obtaining the chemical composition as an interstellar medium, and the stellar component of the galaxy. Creating a single scale of chemical composition for interstellar medium and stars. During the project, a new version of the ELF3D software package has been developed to automatically measure the groups of emission lines, optimization is performed to work with large spectral surveys. Created a catalog of spectra with auroral emission lines for regions with high, medium and low abundance of heavy chemical elements. Comparison of oxygen abundance and N/O ratio, obtained by theoretical and empirical methods are performed. A new method for determining the content of oxygen in the regions of НII on the basis of methods of machine learning (random forest). It is shown that the radial gradient of oxygen abundance and the ratio of nitrogen content to oxygen content (N / O) depends on the average age of galaxy stars. Product Description popup.authors Ivaniuk Oleksii M. Sobolenko Margaryta O. Sukhorukov Andriy V. popup.nrat_date 2022-03-09 Close