The Curve of Line-Width Correlation and Doppler Velocities in Stellar Atmospheres. I. Delta Canis Majoris.
A new method of studying Doppler velocities in stellar atmospheres is propbsed. It depends upon a relation between the equivalent widths and the half-widths of the absorption lines. Turbulent velocities of both large and small eddies can be determined by this method. Applying it to Canis Majoris, we find that the turbulent velocities of large eddies are practically constant with respect to the strengths of the absorption lines and that the turbulent velocities of small eddies increase very rapidiy with the increase of line intensities. A general discussion is given of the interrelationship between the turbulent spectrum and the Doppler broadening of absorption lines, but no attempt has been made to explain the physical nature of the large eddies.