Chromium and titanium abundances in the atmospheres OF A-, F- and G-supergiants in the solar neighborhood
The abundances of two chemical elements of the iron group - Ti and Cr are determined from the high-resolution spectra for 22 A-, F-, G-supergiants in the solar neighborhood (within 700 pc). Chromium and titanium abundances are derived from Cr II and Ti II lines. The mean chromium abundance is log e(Cr) = 5.70 ± 0.13 what within error limits corresponds to the solar abundance log e(Cr) = 5.64. The mean titanium abundance log e(Ti) = 4.89 ± 0.10 within errors is very close to the solar abundance as well log e(Ti) = 4.95. The mean Cr and Ti abundances allow the mean metallicity of young closely-located stars to be suggested identical to solar.
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