Other
Scientific paper
Jul 1977
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977phdt.........5a&link_type=abstract
Ph.D. Thesis Case Western Reserve Univ., Cleveland, OH.
Other
3
Lithium, Spectroscopy, Stars, Chemical Analysis, Line Spectra, Spectral Signatures, Spectrum Analysis
Scientific paper
Observations of 62 MS, S and C stars were made to investigate the variation of Li abundance with other compositional parameters. For each star, a high dispersion image tube spectrogram was taken and a low dispersion plate was obtained for classification purposes. The S stars were divided into five C/O classes on the basis of the relative strengths of TiO, YO and ZrO. The high dispersion plates were visually examined and estimates of line ratios were used to derive Li/Ca and Zr/Ti abundance indices by comparing the observations with published abundance determinations. Implications of the relationship between Li/Ca, Zr/Ti and C/O are discussed.
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