Collinder 121
Number of stars per data source
Reference 11 : 1 star
Reference 83 : 13 stars
Reference 213 : 1 star
Reference 478 : 1 star
Reference 825 : 1 star
Reference 999 : 26 stars
References
- 11
- Morgan W.W., Roman N.G.
- (1950) Astrophys. J. 112, 362
- Revised standards for supergiants on the system of the Yerkes Spectral Atlas
- 1950ApJ...112..362M
- 83
- Hiltner W.A., Garrison R.F., Schild R.E.
- (1969) Astrophys. J. 157, 313
- MK spectral types for bright southern OB stars
- 1969ApJ...157..313H
- 213
- Garrison R.F., Hiltner W.A., Schild R.E.
- (1977) Astrophys. J. Suppl. 35, 111
- MK spectral classifications for southern OB stars
- 1977ApJS...35..111G
- 478
- Buscombe W.
- (1969) Mon. Not. R. Astr. Soc. 144, 31
- Line strengths for southern OB stars - II
- 1969MNRAS.144...31B
- 825
- Woods M.L.
- (1958) Mem. Commonwealth Obs. Mount Stromlo 16, 125
- Spectral types of bright southern stars
-
- 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