NGC 5138
Number of stars per data source
Reference 411 : 2 stars
Reference 999 : 2 stars
References
- 411
- Lindoff U.
- (1972) Astron. Astrophys. Suppl. 7, 231
- An investigation of four southern open clusters
- 1972A&AS....7..231L
- 999
- Houk N., Cowley A.P., Smith-Moore M.
- University of Michigan (Ann Arbor) Vol 1 (1975), Vol 2 (1978), Vol 3 (1982), Vol 4 (1988), Vol 5 (1999)
- The University of Michigan Catalogue of two-dimensional Spectral Types for the HD stars
- 1975mctd.book.....H