Two-dimensional quantitative spectral classification of the F5-K0 stars

Details Two-dimensional quantitative spectral classification of the F5-K0 stars Two-dimensional quantitative spectral classification of the F5-K0 stars

Apr 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987kfnt....3...15r&link_type=abstract

Kinematika i Fizika Nebesnykh Tel (ISSN 0233-7665), vol. 3, Mar.-Apr. 1987, p. 15-18. In Russian.

Physics

1

Absorption Spectra, Classifying, Line Spectra, Spectral Line Width, Spectrum Analysis, Stellar Spectrophotometry

Scientific paper

On the basis of measured equivalent widths of selected absorption lines in the F5-K0 spectral range, the criteria of stellar classification are developed by spectral class and absolute stellar magnitude. The equivalent widths are measured on spectrograms obtained in the Cassegrain focus of the 2 m telescope. Six criteria were used for determining the spectral classes. In order to obtain the absolute magnitudes, four criteria were used. The mean square error depending on the selected criteria is + or - (0.5 - 0.7 m). The procedure can be used for two-dimensional quantitative spectral classification of nonstable stars of different types.

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