NGC 3228
Number of stars per data source
Reference 101 : 13 stars
Reference 999 : 8 stars
Reference 1003 : 13 stars
References
- 101
- Hartoog M.R.
- (1976) Astrophys. J. 205, 807
- The frequency of peculiar A and metallic-line stars in open clusters
- 1976ApJ...205..807H
- 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
- 1003
- Wooden W.H. II
- (1971) Publ. Warner and Swasey Obs. 1 no 2
- Space distribution of stars in the southern Milky Way: II. A region in Vela
- 1971PW&SO...1b...1W