Determination of the turbulent velocities in the solar photosphere from weak cyanogen lines in the spectral range 4179-4213A

Weak cyanogen line profiles (the violet system of bands with v'-v''=-1) are analyzed with the aim of determination of turbulent velocities in the upper layers of the solar photosphere. A method was used to decompose the observed cyanogen blends into elemental components. From the Liege Solar Atlas, some spectral regions of the width 0.3-0.6 A were examined. For the solar disk center, resulting Doppler widths central depths and improved (compared with the laboratory data) central wavelengths of the elemental components of the cyanogen blends have been obtained. The determined vertical component of the total photospheric velocity field zeta=2.1 kmxs-1 has been found to be appreciably smaller than the value zeta=3.5 kmxs-1 obtained earlier from the analysis of the mean-resolution spectra of CN