NGC 6169

Number of stars per data source

	Reference   83 :    1 star
	Reference  252 :    1 star
	Reference  275 :    1 star
	Reference  469 :    1 star
	Reference  999 :    1 star

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
252: Weaver H.F.; (1953) Astron. J. 58, 177; B stars and spiral structure in the larger neighborhood of the Sun; 1953AJ.....58..177W
275: Walborn N.R.; (1972) Astron. J. 77, 312; Spectral classification of OB stars in both hemisphere and the absolute-magnitude calibration; 1972AJ.....77..312W
469: Morris P.M.; (1961) Mon. Not. R. Astr. Soc. 122, 325; Centaurus association. II. Spectral types and luminosities of 220 O,B and A stars; 1961MNRAS.122..325M
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