Trumpler 24

Number of stars per data source

	Reference   81 :    4 stars
	Reference  275 :    1 star
	Reference  833 :    1 star
	Reference  999 :    2 stars

81: Schild R.E., Hiltner W.A., Sanduleak N.; (1969) Astrophys. J. 156, 609; A spectroscopic study of the association Scorpius OB1; 1969ApJ...156..609S
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
833: Thackeray A.D., Tritton S.B., Walker E.N.; (1973) Mem. R. Astr. Soc. 77, 199; Radial velocities of southern B stars determined at the Radcliffe observatory - VII.; 1973MmRAS..77..199T
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