NGC 3572

Number of stars per data source

	Reference   36 :    2 stars
	Reference  213 :    1 star
	Reference  281 :    1 star
	Reference  999 :    1 star

36: Hoffleit D.; (1956) Astrophys. J. 124, 61; Distance for southern early-type stars specially in Carina and other HII regions; 1956ApJ...124...61H
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
281: Walborn N.R.; (1973) Astron. J. 78, 1067; The space distribution of the O stars in the solar neighborhood; 1973AJ.....78.1067W
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