A grid of synthetic spectra for the determination of effective temperature, gravity and metallicity of F, G, and K stars. I - Description of the method. II - Application to 41 stellar spectra taken in the Basel field of SA 141

Details A grid of synthetic spectra for the determination of effective temperature, gravity and metallicity of F, G, and K stars. I - Description of the method. II - Application to 41 stellar spectra taken in the Basel field of SA 141 A grid of synthetic spectra for the determination of effective temperature, gravity and metallicity of F, G, and K stars. I - Description of the method. II - Application to 41 stellar spectra taken in the Basel field of SA 141

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991a%26a...247..108c&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 247, no. 1, July 1991, p. 108-129. Research supported by SNSF.

Statistics

Computation

74

Computational Astrophysics, F Stars, G Stars, K Stars, Stellar Spectra, Metallicity, Spectrum Analysis, Stellar Gravitation, Stellar Temperature, Synthetic Spectra, Stellar Parameters

Scientific paper

The computation of a grid of synthetic spectra in the wavelength region λλ4780-5300 Å is described.
With the use of this grid, a method is developed for deriving the stellar parameters temperature, gravity and metallicity from a low-resolution spectrum.
The use of the grid is tested for 20 reference stars, in two ways. The stellar parameters for these 20 stars are derived (1) directly from the grid, (2) using the synthetic grid in conjunction with the observed spectrum of another reference star.
A best fit is obtained by the second method, i.e., by using the grid in combination with a number of standard stars, in this way establishing corrections to the parameters obtained exclusively from the grid.

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