The Astrophysical journal . oore This star is an H-type. The variable velocity was suspected byMr. Moore and confirmed by the recent measures. SU Cygni (a=i9h4oT8; 5=+ 29 01) This variable, of the 8 Cephei type, was found to be a spectro-scopic binary by Mr. J. D. Maddrill1 from observations of its radialvelocity made during the past summer with the one-prism spectro-graph. Its spectrum is of type F-G. W. W. Campbell Mount Hamilton J. H. MOORE November 12, 1906 A LIST OF SOUTHERN STARS HAVING VARIABLERADIAL VELOCITIES From an examination of plates secured by the D. O. Mills Expe-dition to the
The Astrophysical journal . oore This star is an H-type. The variable velocity was suspected byMr. Moore and confirmed by the recent measures. SU Cygni (a=i9h4oT8; 5=+ 29 01) This variable, of the 8 Cephei type, was found to be a spectro-scopic binary by Mr. J. D. Maddrill1 from observations of its radialvelocity made during the past summer with the one-prism spectro-graph. Its spectrum is of type F-G. W. W. Campbell Mount Hamilton J. H. MOORE November 12, 1906 A LIST OF SOUTHERN STARS HAVING VARIABLERADIAL VELOCITIES From an examination of plates secured by the D. O. Mills Expe-dition to the Southern Hemisphere, the following stars have beenfound to have variable radial velocities: 1 Announced by Mr. Maddrill in Publ. A. S. P., 18, 252, 1906. MINOR CONTRIBUTIONS AND NOTES 57 /3 Reliculi (a= 3h 42T9; 5= -65 °7) Date Velocity Negative by* Measured by + 54-5+ 53-8+ + 47-4+ 47-I1+ cm W. w. R H. C. P. December 18 \ A. W. The spectrum of this star is of type K m Velorum (a=gh 47T9; 5= — 460 5). Measured by- 1905, January ro. .January 28. .March April 3 April 3 December 6. 1 Independent measure of above plate. The type is G 5K. v Centauri (a=i3h 43T5; 5=— 410 12) Date 1904, April 20. .i9°5> January 25. March April 3. . April 13. . April 27. . Velocity + 4+ 28 + 9 + 33 — 1 km Negative by5 w. Measured by 2 The observers indicated in these columns are Messrs. Palmer, R. H. Curtiss,Albrecht, and Wright. The type is B 2 A. Dr. Palmer assigns a period of about thirty-one days to this star. v2 Centauri (<*=i3h 554; ^=—45° 7) Date Velocity Negative by Measured by2 1904, April 6. . .April 6. . .May 16 1905, March 4. . 1906, January 22. + 4+ 3+ 5-7-7+ 3 32 l^m P. W. & w. p w. w. w. w. 1 Footnote page 1. 2 Poor plate, underexposed. 58 MINOR CONTRIBUTIONS AND NOTES The type is F 5 G. The variable velocities of ft Reticuli and v Centauri were detectedby Dr. Palmer from preliminary measurements of the thir
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