vdB-Hagen 99
Number of stars per data source
Reference 308 : 12 stars
Reference 999 : 7 stars
References
- 308
- Landolt A.U., Perry C.L., Levato O.H., Malaroda S.M.
- (1990) Astron. J. 100, 695
- Multicolor photometric and spectroscopic observations of the van den Bergh and Hagen cluster no 99
- 1990AJ....100..695L
- 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