CHAPTER III 



The mean velocities of stars from observations in the line of sight. 



22. Before any further computations were made, the s 

 chapter, whose velocities were marked as particularly uncc 

 determining the apex and the solar velocity small errors 

 like these in the catalogue do not influence the solution 

 in so high a degree as by the treatment of the moments 

 of the second order. 



The distribution of the remaining stars is shown 

 in the table VII. 



23. Furthermore, the velocities of stars of spectral 

 classes B, K and M were corrected on account of the 

 constant K, this being assumed to have the nature of 

 a systematic error in the measurements. 



The following corrections were applied 1 : 



Type B 

 Correction — 0.91 



K 



- 0.75 



M 



- l.ll 



For the other spectral classes no corrections were 

 applied, because in these cases the mean error in K was 

 too large. 



24. The stars thus being freed from systematic 

 errors, there is nothing to prevent a diametrical com- 

 bination of the squares. Indeed, all calculations in this 

 chapter are performed so that the stars of south decli- 

 nation are transferred to the diametrically situated point 

 on the north sky, the signs of the velocities at the same 

 time being changed. 



tars mentioned in the first 

 ■rtain, were rejected. By 



TABLE VII. 



Distribution of the stars 

 used by determining the 

 velocity distribution and 

 the mean velocities. 



Square U 



Square 



11 





17 



D. 



17 



A, 



29 



D, 









D a 



38 



Bi 



39 



O4 



36 



B, 



34 



D- 



24 



B., 



25 



D e 



12 



B, 



27 



D, 



15 



B-, 



30 



Ok 



23 



B, 



24 



D 9 



36 



B- 



24 



Djo 



31 



ß« 



34 



D u 



29 



B 8 



41 



D12 



19 



Bio 



33 











Ei 



35 



c 4 



23 



B s 



38 



c, 



28 



£., 



44 



c' s 



51 



£4 



63 



c 4 



32 



E s 



53 



c 6 



23 





50 



c 6 



20 





48 



c 7 



30 



E s 



44 



c* 



31 



E 9 



36 



c, 



22 



E[ a 



35 



c 10 



39 







c„ 



29 



F t 



38 



c„ 



30 





29 



1 The values of K on page 24 seem to be constant for all class B stars except for the stars 

 of type BS— B%. This table, however, was computed after the writing of the present chapter, for 

 which reason the correction — 0.91 was applied to all class B stars. 



