The Fundamental Parameters of Two A-Type Stars HD 2924 and HD 4321

AIP Conference Proceedings(2018)

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摘要
We present atmospheric parameters for HD 2924 and HD 4321: effective temperature, surface gravity, microturbulence, and metallicity. The spectra were obtained at the TUBITAK National Observatory using the Coude echelle spectrograph attached to the 1.5 m telescope. The model atmospheres were calculated by using the ATLAS9 code. We derived T-eff and log g values using excitation and ionization equilibrium of iron lines and by fitting H beta profiles of LTE model spectra to the observed ones. The metallicities and microturbulence velocities were measured from equivalent widths of the iron lines in the observed spectra.
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Astronomical Data Analysis
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