NGC 3572

Number of stars per data source

	Reference  213 :    1 star
	Reference  281 :    1 star

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