NGC 6178

Number of stars per data source

	Reference  213 :    2 stars
	Reference  425 :    7 stars
	Reference  473 :    2 stars
	Reference  999 :    3 stars

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
425: FitzGerald M.P., Luiken M., Maitzen H.M., Moffat A.F.J.; (1979) Astron. Astrophys. Suppl. 37, 345; Analysis of the results of MK classification of 176 stars in 37 southern open clusters; 1979A&AS...37..345F
473: Whiteoak J.B.; (1963) Mon. Not. R. Astr. Soc. 125, 105; An association of O and B stars in Ara; 1963MNRAS.125..105W
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