Trumpler 18
Number of stars per data source
Reference 50 : 3 stars
Reference 51 : 7 stars
Reference 55 : 26 stars
References
- 50
- Cannon A.J., Pickering E.C.
- (1918-1924), Ann. Obs. Harvard Coll. Obs. 91 to 99 and 100
- Henry Draper catalogue and extension
-
- 51
- Cannon A.J., Mayall W.M.
- 1949) Ann. Harvard Coll. Obs. 112
- Henry Draper extension 2
-
- 55
- Johansson K.L.V.
- (1980) Astron. Astrophys. Suppl. 41, 43
- A contribution to the study of the galactic structure in Carina, Crux, Centaurus and Norma
- 1980A&AS...41...43J