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Microturbulent Velocity in the Atmospheres of G Spectral Classes Star


Affiliations
1 Department of Astrophysics, Baku State University, Z Khalilov Str. 23, AZ 1148, Baku, Azerbaijan
2 Shamakhi Astrophysical Observatory of ANAS, AZ 2656, Shamakhi, Azerbaijan
 

The microturbulence is investigated in the atmospheres of some G spectral classes stars by the atmosphere model. The microturbulent velocities are determined on the basis of comparison of the values measured from observation and theoretically calculated equivalent widths of lines FeII. It has been found that the microturbulent velocity (𝜉𝑡) depends on the surface gravity (g) in the atmospheres of the star: 𝜉𝑡 decreases with increasing g. The microturbulent velocity is less in the stars with intense atmosphere.

Keywords

Stars, Microturbulence, Fundamental Parameters, Chemical Composition.
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  • Microturbulent Velocity in the Atmospheres of G Spectral Classes Star

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Authors

ZA Samedov
Department of Astrophysics, Baku State University, Z Khalilov Str. 23, AZ 1148, Baku, Azerbaijan
MA Jafarov
Shamakhi Astrophysical Observatory of ANAS, AZ 2656, Shamakhi, Azerbaijan

Abstract


The microturbulence is investigated in the atmospheres of some G spectral classes stars by the atmosphere model. The microturbulent velocities are determined on the basis of comparison of the values measured from observation and theoretically calculated equivalent widths of lines FeII. It has been found that the microturbulent velocity (𝜉𝑡) depends on the surface gravity (g) in the atmospheres of the star: 𝜉𝑡 decreases with increasing g. The microturbulent velocity is less in the stars with intense atmosphere.

Keywords


Stars, Microturbulence, Fundamental Parameters, Chemical Composition.

References