Stellar velocity distribution 



1 1 



The catalogue contains several stars, whose parallaxes are determined. Most 

 of these stars were found in a paper by Walter S. Adams and Arnold Kohl- 

 schütter: The radial velocities of one hundred stars with measured parallaxes 1 . 

 These stars I have separately examined in the cases when the parallax permitted a 

 good determination of the absolute velocity. From 160 such stars with 7r>0".025 

 I have deduced the sun's relative motion and, applying the generalized ellipsoidal 

 hypothesis, given an approximative aspect of the velocity distribution 2 . 



The total number of stars collected are in all 1640. 



The stars are chiefly of bright magnitudes and the catalogue may broadly 

 be considered complete down to the magnitude 5.0. The motions in the line of sight 

 being however independent of the distances of the stars, nothing prevents us from 

 treating stars of different magnitudes, when the spectral types are separated. It is 

 however necessary, by summing up the spectral types, to limit the magnitude in 

 order to get results comparable with those found from proper motions. 



1 Contribution from the Mount Wilson Solar Observatory. No. 78, 7Î). 



2 Meddelande fr. Lunds Astr. Obs. No. 65. 



