Publisher's Synopsis
Excerpt from Radial Velocity of Leonis
While the spectrum contains both hydrogen and helium lines, being classed as Bp, it is not such as will yield very accurate measures. One feature discovered here was that the K line (a 3933) gave velocities more negative than those of the other lines to the extent of some 30 km. Per see. On the average. There was no regular run to these differences, i.c., the high positives for the hydrogen and helium lines did not necessarily occur with the high positive for the K line.
Sixty-five spectrograms were secured with the single-prism camera, dispersion of 334 tenth-metres per mm. At H7, Thirty-one of these were on Seed 27, and the remainder on Seed 23 Emulsion, the finer-grained plates improving considerably the quality of the K as well as of the other lines. A few plates notably 4336 and 4775 are of poor quality. Plate 4273 is peculiar. Taken immediately after 4272 it shows two of the lines as complex though they appear as single on 4272.
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