Spectral investigation of the eclipsing binary star RY GEM

Details Spectral investigation of the eclipsing binary star RY GEM Spectral investigation of the eclipsing binary star RY GEM

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987azh....64..367k&link_type=abstract

Astronomicheskii Zhurnal (ISSN 0004-6299), vol. 64, Mar.-Apr. 1987, p. 367-372. In Russian.

Physics

Eclipsing Binary Stars, Stellar Atmospheres, Stellar Physics, Stellar Spectra, Atom Concentration, Line Spectra, Radiation Pressure, Spectrograms, Stellar Composition, Stellar Luminosity

Scientific paper

Diffraction spectrograms with a reciprocal dispersion of 28-37 A/mm are used to study the physical conditions in the atmosphere of the primary star of the RY Gem system. The spectral type and luminosity, excitation temperature, turbulent velocity, electron pressure in the atmosphere and envelope, and concentrations of atoms of several chemical elements of the star are determined. It is noted that the chemical element concentrations are systematicaly lower than the 'solar' concentration.

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